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VL-E990E
VL-E990E VL-E990E
SERVICE MANUAL
S19B6VL-E990E
LIQUID CRYSTAL CAMCORDER 8
SERVICE MANUAL LIQUID CRYSTAL CAMCORDER 8
PAL
PAL
MODEL
VL-E990E
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.
CONTENTS
Page 1. SPECIFICATIONS ........................................................................................................................... 1-1 2. PART NAMES AND FUNCTION ...................................................................................................... 2-1 3. DISASSEMBLY OF THE SET .......................................................................................................... 3-1 4. MECHANISM ADJUSTMENT .......................................................................................................... 4-1 5. ADJUSTMENT OF VCR ................................................................................................................... 5-1 6. SYSTEM BLOCK DIAGRAMS ........................................................................................................ 6-1 7. SCHEMATIC DIAGRAMS ............................................................................................................... 7-1 8. SEMICONDUCTOR LEAD IDENTIFICATION ................................................................................ 8-1 9. PRINTED WIRING BOARD ASSEMBLIES ..................................................................................... 9-1 10.REPLACEMENT PARTS LIST ...................................................................................................... 10-1 11.PACKING OF THE SET ................................................................................................................ 11-1 12.AC ADAPTER ............................................................................................................................... 12-1
MODEL VL-E990E
SHARP CORPORATION
VL-E990E
VL-E990E
1. SPECIFICATIONS
Signal System: Recording System: Cassette: Recording/Playback Time: Tape Speed: Pickup Device: Lens: Lens Filter Diameter: Monitor: Microphone: Color Temperature Compensation: Minimum Illumination: Video Output Level: Audio Output Level: Speaker Output: Power Requirement: Power Consumption: Operating Temperature: Operating Humidity: Storage Temperature: Dimensions (approx.): Weight (approx.): PAL standard 2 rotary heads, helical scanning system 8 mm video tape, MP type 120 minutes (P5-120) 20.051 mm/second 1/4" (6.4mm, effective size: 4.5 mm) CCD image sensor (with approx. 320,000 pixels including optical black) 16 × power zoom lens (F1.4, f=4.0-64.0 mm) and full-range auto focus 46 mm 4" (10.1 cm) full-color LCD screen (TFT active matrix) Electret monaural microphone Auto white balance 0.8 lux* (with gain-up, F1.4) 1.0 Vp-p 75-ohm unbalanced 8 dBs, impedance less than 2.2 kohms 200 mW DC 3.6V 5.3W (during camera recording in full auto mode with zoom motor off, Extend Zoom, DIS and Snapshot functions off, and backlight in normal mode) 0°C to + 40°C 30% to 80% 20°C to +60°C 182 mm (W) × 109 mm (H) × 99 mm (D) 710g (without battery pack, lithium battery, video cassette, and lens cap)
AC Adapter/Battery Charger UADP-0280TAZZ
Power Requirement: DC Output: Power Consumption: Dimensions (approx.): AC 110-240 V, 50/60 Hz 4.5 V 16 W 75 mm (W) × 51 mm (H) × 130 mm (D) Weight (approx.): 0.65 lbs (220 g)
Battery Pack BT-H22
DC Output: 3.6V Dimensions (approx.): 54 mm (W) × 19 mm (H) × 56 mm (D) Weight (approx.): 0.30 lbs (136 g)
Specifications are subject to change without notice. * Minimum illumination: Since there is no widely accepted testing procedure for determining minimum illumination capability, lux ratings are comparable only between models from the same manufacturer
1-1
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2. PART NAMES AND FUNCTION
For details on the use of each control.
2-1
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3. DISASSEMBLY OF THE SET
3-1. Removal of the camera section
Note: Before removing the cabinet, turn off the power supply, and ascertain that the battery has been removed.
Pull out Lens holder
(b) Pull out (1) Camera front cabinet (a)
Lens connector
(d)
(a)
1. Remove one screw ((d)XiPSF20P04000), one screw ((b)LXHZ0018TAFF), two screws ((a)LX-HZ0018TAFN), and pull out the camera front cabinet (1).
Pull out
5. Pulling the lens holder, and pull out the lens upwards. Then, remove the lens connector.
(a) (b) Pull out (a) (d) (2) Camera rear cabinet
2. Remove one screw ((b)LX-HZ0018TAFF), one screw ((d)XiPSF20P04000) and two screws ((a)LX-HZ0018TAFN) and pull out the camera rear cabinet (2) backwards.
Connector
Tilt frame C
(b)
Tilt frame C
(b)
*Remove the Camera rear cabinet, after removing the connector.
Connector
6. Remove one connector and two screws ((b)LX-HZ0018TAFF) and pull out the lens unit from the tilt frame C. Note: Be careful so as not to damage the FPC since the camera PWB unit is connected to the lens unit with the FPC attached.
3. Remove the connector (1 pc.). Note: When assembling the camera rear cabinet, lay the FPC between the camera shield case and the tilt frame C, and insert it into the connector.
(c) Claw Remove Open Open Remove CCD connector
Claw
4. Firstly, remove the CCD connector from the Camera PWB, then remove one screw ((c)LX-HZ0045TAFN), the reverse side in this figure (Not remove the lens holder in this section).
7. Remove the camera PWB unit and the lens unit together, opening two claws of the battery holder outward.
3-1
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3-2. Disassembly of the VCR main body
<1. Removal of the VCR lid shaft>
Area A
(j)
(b)
(1) Remove one screw ((j)LX-HZ0063TAFC).
VCR lid Frame V
(2) Remove five screws ((b)LX-HZ0018TAFF).
Tilt frame C VCR lid shaft
(2) Bring the jig (example: slotted precision screwdriver) into contact with the removal groove of the VCR lid shaft, and slide the screwdriver with care to prevent injuring the VCR lid and frame V.
VCR lid shaft
(i)
(3) Turn the tilt frame C so that the screwdriver can be easily inserted, and remove two screws ((i)XiPSN20P04000).
(i)
(3) Pull out the VCR lid shaft head which projects beyond the surface of the VCR lid. <2. Disassembly of the cabinet L>
(4) Remove one screw ((i)XiPSN20P04000).
VCR lid VCR lid knob Cabinet L
FPC connector
(1) Slide the "VCR lid knob" in the arrow direction, and slide the VCR lid in the arrow direction as far as the cabinet L fastening screw is visible. (Left figure) Since the connector of the microphone is still connected, take care to prevent excessively sliding the VCR lid.
(5) Remove the cabinet L to the midway, and disconnect the FPC connector.
3-2
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<3. Removal of the VCR lid>
Microphone connector
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<4. Removal of the tilt unit>
Battery terminal unit (b) (b)
Tilt frame C Tilt frame V
Area B
(b)
(d)
(1) Disconnect the microphone connector. Detail of area B
Microphone wire spacer Microphone connector
(1) Remove three screws ((b)LX-HZ0018TAFF). Remove one screw ((d)XiPSF20P04000). Disconnect three connectors. Remove the tilt unit from the cabinet of the main body. <5. Disassembly of the LCD holder>
Microphone connector Tripod angle
(2) Remove the connector cable from the hole of the microphone wire spacer. Detail of area B
Microphone connector
Frame V
Microphone wire spacer (d)
(3) Remove the microphone wire spacer from the Frame V.
(1) Remove two screws ((d)XiPSF20P04000), pull out the tripod angle.
Remote control ray reception PWB Remote control ray reception section Claw
VCR Lid
(2) Remove the remote control ray reception PWB from the LCD, (Distorting the claw (snap-fit type) of the LCD holder, release its engagement.) (4) Pull out the microphone wire cable with care to prevent it from interfering with the mechanical parts, and remove the VCR (b) lid. LCD unit
VCR lid
Inverter transformer
Caution for installation of the VCR lid When installing the VCR lid, move the VCR lid in the arrow direction, keeping the VCR lid parallel to the main body as shown above.
(3) Remove two screws ((b)LX-HZ0018TAFF) and two connectors, and remove the LCD unit (with inverter) from the main body.
3-3
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<7. Disassembly of the frame V> (1) Remove three screws ((e)LX-BZ0191TAFD) and one connector, and remove the frame V from the main body.
(e) Li/RC unit Connector Connector Main PWB (e) Frame V Mechanism unit
Frame V rib Connector
(e)
(4) Disconnect the connector which connects the Li/RC unit to <8. Disassembly of the LCD panel> the main PWB, and slide the Li/RC unit in the arrow direction from the frame V. Note: When connecting the FPC, pass it through the inside of rib of frame V (to prevent the FPC from being jammed). <6. Removal of the cassette compartment lid>
B (2)
C C E
A
B
D Claw (A) A Claw (A) (1)
Reflection sheet Light guide plate Diffusion sheet
D F Lugs
Prism sheet Diffusion sheet Reflection polarizing sheet Lugs (3) Claw (B) Disengage the claw, and remove the LCD panel. (2)
(1) Using the slotted precision screwdriver, push and turn the two claws (C and D) which fasten the cassette compartment lid, and the cassette compartment lid will be removed from the hook area of the cassette component. (2) Turning the cassette compartment lid in the arrow direction, lift it, and the claws A and B will be disengaged to remove the cassette compartment lid. Note: Take care to prevent breaking the claws of the cassette compartment lid.
Claw C
(C)
(4)
1. Disengage two claws (A), and remove the lamp inverter unit (1) from the LCD holder (2). 2. Remove the sheets from the LCD holder (2). 3. Pull the LCD glass retaining (3). Claw D 4. Disengage the claw (B), and slide the LCD panel (4) in the (C) View F direction to remove the LCD holder (2). Note: Note: When handling the prism sheet, diffusion sheet, light guide plate, When fixing the cassette compartment lid, first engage the claws reflection sheet and reflection polarizing sheet do not touch any A and B, and then engage the claws C and D, verify that the four parts other than lugs and sides. claws (A, B, C and D) of the cassette compartment lid are Put the light guide plate and reflection sheet between reflectors of lamp. Therefore, install them together with the lamp ass'y. securely engaged as shown in the view above.
View E Claw A
Claw B
3-4
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3-3. REPLACEMENT OF CCD SENSOR
3-3-1. BEFORE REPLACEMENT
1) The CCD image sensor is more sensitive to electrostatic breakage than C-MOS LSI. Therefore sufficient means to prevent electrostatic damage must be taken when it is replaced. · Ground the soldering iron. · Ground also the human body, using the wrist strap(through an 1 Mohm resistor). · Until the CCDsensor is mounted on the PWB, fit it to the conductive sponge, and short-circuit the foot lead. 2) Take utmost care so that the surface glass of CCD sensor and optical filter are not contaminated and damaged. If any contamination is found, for example fingerprint, wipe it off with silicon paper or clean chamois skin. 3) When replacing the CCD sensor, use the antistaic grounded soldring iron, and perform quickly soldering.
Index Mark
1
7
JAPAN SHARP
LZ2423H5 YYWWXXX
14 8
3-3-2. REMOVAL OF CCD
1) Unsolder the CCD sensor leads from the sensor PWB. 2) Take out the sensor PWB. 3) Remove the two screws (6), and remove the sensor holder and CCD sensor.
3-3-3. MOUNTING OF CCD
1) Place the lens unit upright (since the CCD sensor mount ID faces upward, care must be taken so as not to damage the front lens of unit), put the crystal filter first and then the dust protection rubber into the CCD holder of lens unit. Set the crystal unit with its thin side toward the lens unit. 2) Place the CCD sensor so that the its No. 1 pin is at the right lower (Positioning hole to be at right), and put the CCD sensor into the CCD holder. For smooth and tight fitting, press the right lower part of back of CCD sensor, and then press the left upper part. Note: Pay attention to the direction of CCD sensor. 3) Place the sensor holder so that its two round markings be visible, and fix the sensor holder with the two screws ((6)LX-HZ0013TAFF). 4) Mount the sensor PWB so that the CCD sensor leads go thorough the PWB holes. 5) Solder the CCD sensor lead to the sensor PWB. (6) Note: Take care not to apply excessive heat.
Sensor Holder CCD Sensor Crystal
Rubber
The mark must be on this face. Lens Side CCD Side Mark The THIN SIDE faces the lens
3-5
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Configuration 1. Name 2. Part No. 3. Code * Model, Uses Remarks
4. MECHANISM ADJUSTMENT
4-1. Mechanism checking/adjusting jigs, tools and parts
4-1-1. Mechanism checking/adjusting jigs and tools
1. Cassette torque meter for PB 2. JiG8T-012 3. CV * (10 g·cm/25 g·cm)
1. Cassette torquemeter for VS-REW 2. JiG8T-032 3. CV * (50 g·cm/25 g·cm)
1. Torque gauge 2. JiGTG0045 3. CN * For measurement of loading braketorque
1. Torque gauge head 1. Torque driver 2. JiGTH-MX7U (1.5 kg·cm) 3. BS 2. JiGTD1500RT0H * For torque gauge listed 3. CB above
Tolerance±0.1 2
1.8
4
Edge thickness 0.5
1. Height adjusting jig 2. 9DAGH-E31S 3. BM * For adjustment of Tu guide * For adjustment of Tu height, Si roller height and guide height and Si checking of reel disk height roller height
1. Master plane 2. JiGMP-MX7U 3. CG
1. Tu guide height adjusting driver 2. 9EQDRiVER-V712 3. BL
1. Guide roller height adjusting driver 2. JiGDRiVERHMX7U 3. BU * Bit shape (See the figure above.)
1. Hex wrench 1. Tension Band and Plate 1. Alignment tape * For loosening or tightAdjusting Jig 2. VR2DBOPS ening of Motor stator 2. JiGDRiVERMX7U2 3. BT (1.3mm) 3. BN TAPE CONTENTS
VIDEO IMAGE MONOSCOPE AUDIO TIME L-CH 400Hz 30MIN R-CH 1,000Hz
(1) Slide Calipers (2) High-precision screwdrivers (Phillips head, slotted head) (3) Radio pliers (with thin jaws) (4) A pair of tweezers
4-1-2. Parts for periodic inspection and maintenance.
Configuration 1. Name 2. Part No. 3. Code * Model, Uses Remarks
1. Oil
1. Screw locking agent (1401B) * Three Bond
1. Cleaning liquid 1. Superfine swab (Industrial-use ethyl alcohol) 1. Cleaning paper Morycoat YM-103/X5-6020 2. JiGDUSPER * Commercially available * Dow Coaning 3. AP item * Dusper (Sigma) (Ozu Co., Ltd.) 1. Greases
4-1
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VL-E990E
4-2. Items and timings of inspection and maintenance
The mechanism of VCR needs the following periodic inspection and maintenance in order that it maintains its high quality. Also, after the machine is repaired, execute the following maintenance and checks regardless of how long it has been used.
4-2-1. Inspection and maintenance list
Checking/Maintenance point Tape travelling route (Refer to Section) Drum (Refer to Section) Tape travel system Driving system Performance check 500 Usage time (hrs.) 1,000 1,500 2,000 3,000 Possible symptom encountered · Lateral noise · Unclean head · Screen shaking Remarks Rollers · If abnormal rotation or deflection (significant) is found, replace the roller. Other than rollers · Clean the tape contacting areas. Be sure to use the specified cleaning agent. · Replace if failure is found.
Video head
· Improper S/N ratio · No color appears.
Timing belt Pinch roller Capstan D.D. motor Relay Pulle shaft Pulle gear shaft Drive gear shaft
5
5
5
· Tape does not run. · Tape slackens. · Screen shakes. · Abnormal sound
· Apply oil. (Oil: ) Note: After oil is applied to the drive gear shaft, slightly wipe it off with swab. · Replace if failure (abnormal sound) is detected. · If conformance to the standard is not ensured, replace part.
Loading motor
5
5
5
· Not ejectable · The specific mode cannot be set.
Abnormal sound PB/VS-REW take-up torque PB/VS-REW back tension torque Tu brake HC (Head Cleaner)
5
5 5 5 5
5
5 5 5 5
5 5 5 5
Oil: Greases: MORYCOAT YM-103/X5-6020 Screw locking agent: THREE BOND 1401B Cleaning liquid: Industrial-use ethyl alcohol
: Replace. : Clean. : Apply oil. 5 : Check.
Oil
4-2-2. Notes and cautions
(1) Any cut washers, once removed for parts replacement or for other reason, must be replaced with new ones. (2) The mechanism of this VCR does not involve any volume adjustment. If the specified range is not satisfied, either cleaning or replacing the parts is required. (3) Oils a) Be sure to use the specified oils (different viscosity may cause troubles). b) For the bearings, be sure to use oil that is free form dust and other foreign substances. (Dust or foreign substance contained in the oil may cause wear or seizure of the bearings.) c) A drop of oil represents the amount of oil which is held on the needle top as shown in the figure 1. (4) The circuit repair must be executed without removing the V frame. (5) For operating the mechanism alone, actuate it with the motor. The terminal-to-terminal voltage must be DC4V or less. (6) When installing the cassette control, press the part A shown in Figure 2. *Do not press other parts. (7) Take care so that the whole mechanism is not deformed.
Diameter 1.5 or less
Figure 1
A
Figure 2
4-2
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4-3. Mechanism checks and adjustments
The description given below relates to the general field services, but does not relate to the adjustment and replacement that require high level equipments, jigs, and technical skills. In order to maintain the initial characteristics of the machine, it is necessary to execute the maintenance and check and to prevent damage to tapes and other parts. For adjustments which need jigs, be sure to use the jigs. Notes and cautions (1) For mechanism checks and adjustments, be sure to use the AC adapter as the power supply. (2) For running the tape, be sure to install the cassette control ass'y in advance. (If the cassette control ass'y is to be removed subsequently after its installation.)
4-3-1. Checking the reel disk height
(1) Remove the cassette control ass'y. (2) Taking due care not to let the master plane touch the tape running areas such as the drum and the guide rollers, position the master plane so that the two guides (A and B in the figure 1) are set in the holes of master plane, then properly set it in the mechanism. (3) Using the slide callipers or the like, check that the distance from the upper surface of master plane to the reel support surface of the S/Tu reel disk is within the specified range. (Figure 2) Note: When measuring, do not apply excessive force to the reel support surface of reel disk. (4) If the measurement is not within the specified range, replace the reel disk ass'y. (5) Check the items (2) to (4) above in the following two modes. a) Standby mode b) Playback (recording) mode
B
A
4.4 ± 0.15 4.4 ± 0.15
A B
Reel support surface
Figure 1
Figure 2
4-3-2. Checking the take-up torque for playback (recording)
(1) Set the torque cassette (8T-012) in position, and check in the SP-mode recording mode (tape recorded in SP mode) that the torque at the tape taking-up side is within the standard range. Standard of take-up torque for SP-mode recording (playback) 9 ± 3 g·cm with ripples less than 4 g·cm (If the torque ripples appear, read the center value of torque between the ripples.)
4-3-3. Checking and adjusting the back tension torque for playback (recording)
(1) Checking 1) Set the torque cassette (8T-012) in position, and check in the SP-mode recording mode (tape recorded in SP mode) that the torque at the tape supply side is within the standard range. Standard of back tension torque for SP-mode recording (playback): 8 ± 2 g·cm with ripples of less than 2 g·cm (Torque ripple must be within 8 ± 2g·cm) (2) Adjustment 1) If the back tension torque is not within the standard range, adjust the tension spring hooking position. If the back tension is too high, hook the spring in the direction A. If the back tension is too low, hook the spring in the direction B. Note: 1. After back tension torque adjustment be sure to check the tension pole position.
4-3
VL-E990E 4-3-4. Checking and adjusting the tension pole position
(1) Check When winding of P5-120 tape is started, check whether the tension pole is in the specified position against Si roller as shown or not. If it is not in the specified position, remove the cassette and adjust the position in the following procedure. (2) Adjustment 1. Don't set up any tape, and select the PB mode. (Refer to Item 4-5-1-(4).) 2. Slightly loosen the screw (a) (to such a strength as the T band holder B can be moved). 3. If the tension pole is in the inner position than specified, dislocate the T band holder B in the arrow (A) direction and if it is in the outer position, dislocate it in the arrow (B) position. Then, tighten the screw (a). (For reference, dislocate it 0.4 to 0.8 mm outer from the position specified above.) For the position adjustment, it is convenient to use the position adjustment screwdriver (JiGDRiVERMX7U2). (Set it in the hole (C).) 4. Check the position in the "(1) Check" procedure described above. 5. If it is not in the specified position, repeat the adjusting procedure 1 thru 3. Note: · Tightening torque of screw (a) 70 mN·m · To check the position, be sure to run the tape. · If the cassette compartment assembly is removed, it makes the work easier. (Refer to Item 4-5-3.)
3 0.5 Si roller
0
VL-E990E
Tension pole
Hole (C)
(B) (A) Screw T Band (a) Holder B
4-3-5. Checking the take-up torque for rewind playback (VS-REW)
(1) Remove the cassette compartment ass'y and set to the sensor OFF mode. (2) Set the torque gauge (TG0045) on the S reel disk, and check in the rewind playback (VS-REW) that the torque at the supply side is within the specified range. Standard of take-up torque in rewind playback (SP mode) 31 ± 5 g·cm with ripples less than 5 g·cm. (If the torque ripples appear, read the center value of torque between the ripples.)
4-3-6. Checking the back tension torque for rewind playback (VS-REW)
(1) Set the torque cassette (8T-032) in position, and check in the rewind playback (VS-REW) mode that the torque at the tape takeup side is within the specified range. Standard of back tension torque in rewind playback (SP mode): 14 ± 5 g·cm with ripples less than 5 g·cm (If the torque ripples appear, read the center value of torque between the ripples.)
4-4
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4-4. ADJUSTMENT OF MECHANISM TAPE TRAVEL SYSTEM
4-4-1. Preparation for adjustment
(1) Clean the tape running areas (guide poles, rollers, drum, Capstan shaft, Pinch roller) (Figure 1) Si roller (2) Connect the oscilloscope to the following TPs. RF output ..... TL3306 H-SW-P ....... TL405 GND ............. TL3318 (3) Playback the alignment tape (VR2DBOPS). Tension pole (4) Ascertain that each guide is free from remarkable curl. (5) Ascertain that the RF waveform of inlet and outlet sides is flat on the oscilloscope (Figure 2, (a)). Unless the waveform is flat, (Figure 2, (b), (c)), make an adjustment as follows.
Sup tilted pole Sup GR
,, ,, ,, ,,,, ,,,, ,,,, ,,,, ,,,,
Tu tilted pole A Drum Reel
Tu GR Tu tilted pole B Capstan shaft Tu guide
Pinch roller
4-4-2. Adjusting the Sup GR and Tu GR
Inlet side Outlet side
Tape travel system (Figure 1)
(1) Turn the Sup and Tu guide rollers to get the flat waveform at the inlet and outlet sides.
(a) Normal
(b) Inlet side waveform is disturbed.
(c) Outlet side waveform is disturbed.
Figure 2
4-4-3. Adjusting the Si roller height
After replacement of Si roller preset and adjust the Si roller height. (1) Si roller height presetting Adjust the height from the upper surface ofmechanism chassis to the upper surface of lower flange with the aid of jig. Then lower it by 90° (clockwise).
Upper flange
Height adjusting jig Master plane (JiGMP-MX7U)
Lower flange
Figure 3 (2) Adjusting the Si roller 1 Playback the tape to set the V/SR mode. 2 Ascertain that the tape is not folded on the lower flange (B) of Si roller. (Figure 4) If tape folding is found, turn the upper flange (A) of Si roller with the driver (clockwise) to eliminate the folding. 3 Playback the alignment tape (VR2DBOPS). 4 Adjust the Sup GR and Tu GR by the procedure described in section 4-2 above. 5 After V/S F,R perform playback so as to ascertain that the waveform rises horizontally within 2 seconds. 6 Unless the normal waveform is obtained (Figure 5), turn counterclockwise the upper flange (A) of Si roller, and repeat the step (5) above. Repeat the steps (5) and (6) until the normal waveform is obtained. At this time ascertain that the inlet travel does not change in the normal playback state. If any change is found, adjust the Sup GR, and redo the step (5).
Si roller Upper flange (A)
Rise waveform
REV
REV mode Lower flange (B) Tape must be free from foldeng.
OK
Playback
REV
NG
Playback
Figure 4
Figure 5
4-5
VL-E990E 4-4-4. Adjusting the Tu guide
After replacement of Tu guide preset and adjust the height. (1) Tu guide height presetting (Figure 6) Adjust the height from the upper surface of mechanism chassis to the upper surface of lower flange with the aid of jig.
Upper flange
VL-E990E
Height setting jig Master plane (JiGMP-MX7U)
Lower flange
Figure 6 (2) Adjusting the Tu guide (Figure 7) 1 Playback the alignment tape (VR2DBOPS). 2 Check that the tape runs at the same height near the capstan shaft in case of V/S F and V/S R. 3 If the tape running position in case of V/S R is higher than the tape running position in case of V/S F, turn clockwise the Tu guide nat. If the tape running position in case of V/S R is lower than the running position in case of V/S F, turn counterclockwise the Tu guide nat.
Capstan shaft Nat
Pinch roller
4-4-5. Checking the V/S F and R waveforms (Figure 8)
(1) Playback alignment tape (VR2DBOPS), and set the V/S R mode. At this time ascertain that the waveform crest pitch is kept constant for more than 5 seconds. (2) Set the V/S F mode. At this time ascertain that the waveform crest pitch is kept constant for more than 5 seconds. Unless the constant pitch is obtained, execute the checks of Section 4-2, 3, and 4.
Figure 7
a b c d
a b c d
Figure 8
4-4-6. Checking after adjustment
(1) Envelope check 1 Playback the alignment tape (VR2DBOPS). 2 Ascertain that the envelope maximum to minimum ratio is 65% or more. (Figure 9) 3 Ascertain that the waveform does not change remarkably. (Figure 10)
C E MIN E MAX A C
Figure 9 (2) Rise check
E MIN E MAX
65 (%)
Figure 10
C 1/8A
1 Playback the alignment tape (VR2DBOPS). 2 Once eject the cassette, and then load it again. 3 Set the playback mode, and ascertain that the RF waveform rises horizontally within 2 seconds. At this time ascertain that there is no tape slackness near the pinch roller.
Capstan shaft Tu guide
Tu GR Tape slackness
4 After V/S F, R and FF/REW execute playback, and ascertain that the RF waveform rises horizontally within 2 seconds. At this time ascertain that there is no tape slackness near the pinch roller. (3) Checking the tape travel 1 When the tape is played back, ascertain that tape lift and tape curl of 0.3 mm or more do not occur at the lower flange of Si roller, upper flange of Sup GR, upper flange of Tu GR, and upper/lower flange of Tu guide. 2 In case of V/S F and R ascertain that no curl is found at each flange.
Tension pole
Figure 11
Sup tilted pole
Si roller Sup GR Tu GR
Drum
Drum
Tu guide Tu tilted pole Pinch roller
Figure 12
4-6
VL-E990E 4-4-7. Checking and adjusting the playback switching point
Refer to the description of playback switching point adjustment in section of VCR circuit adjustment.
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4-5. Mechanism assembling and parts replacement (disassembling and assembling)
Below is given an explanation of assembling of mechanism and its parts replacement. The removal of cabinet and Circuit Board is explained in the relevant service manual. Notes 1 After removal of cut washers be sure to replace them with new ones. 2 Do not place the mechanism upside down on the table. Otherwise, the mechanism part may be deformed or damaged, resulting in malfunction. 3 When assembling, take care so that screw, washer or other foreign substance do not enter. Otherwise mechanism malfunction may occur. 4 Be sure to use the specified cleaning liquid, oil, grease and screw lock as listed below. Otherwise mechanism malfunction may occur. Oil: Greases: Dow Coaning MORYCOAT YM-103/X5-6020 Screw lock: THREE BOND 1401B Cleaning liquid: Industrial-use ethyl alcohol
4-5-1. Mechanism modes
To actuate the mechanism, apply DC3 to 4V to the L motor. At this time the L motor connector must have been disconnected in advance. Below is given an explanation of the mechanism mode necessary for mechanism check, adjustment and replacement. (1). EJ (Eject) mode (See Figure 1) In this mode, it is mechanically positioned to eject the cassette. It is the position where the EJECT lever is moved the farthest in the direction A in the S/B mode. (In this mode, the cassette compartment assembly can not be locked.) (2). S/B (Standby) mode (See Figure 2) When the cassette is loaded, the mechanism is set to the S/B mode. In this mode the slide chassis is most far from the drum. In this mode the Eject lever is in position shown in Figure 2 (in position where the cassette control ass'y can be locked).
A A
Slide chassis
Slide chassis
EJECT Lever EJECT Lever
EJ mode Figure 1 (3). STOP mode (See Figure 3) In the STOP mode the S.T pole base is depressed in the STOP position (or Rec Lock position in CAMERA mode), and the S brake is in contact with the S reel disk.
S pole base
S/B mode Figure 2 (4). PB mode (See Figure 4) In this mode, it is positioned for the replay, record and so on. It is the mechanical position where the pinch roller is pressed against the capstan shaft to make the pinchpressing spring the most longest.
Capstan shaft Pinch Spring
T pole base
S reel disk
S brake
Pinch roller
STOP mode Figure 3
PB mode Figure 4
4-7
VL-E990E 4-5-2. Cassette control ass'y
(1) Set the unit to the EJECT mode, and let the housing stand upright. Or set the unit to the STANDBY mode, press the lock lever in the arrow direction, and let the housing stand upright. (See Fig. 5: in the direction a or b ) (When pushing in the direction a , slightly lift the housing by hand to release the lock lever.) (2) Remove the four screws 2 and take out the down guide 3. (3) Slide the two link support shafts c and the two roller shafts d to the round openings g on their respective slide chassis slits (two at e and two at f ). (4) Deflect the roller shafts d a little inward to get them out of the round openings g on the slide chassis. (Be careful not to deform the inner links.) (1) Set the unit to the STANDBY mode. (2) Deflect the roller shafts d a little inward, and fit them into the round openings g on the slide chassis. (Be careful not to deform the inner links.) (3) Align the flanges of roller shafts d with the slide chassis slits f . While sliding the flanges, fit the support shafts c in the slide chassis slits e , and slide them until they reach the slits. (4) Attach the down guide. (While pressing the guide in the direction i , tighten the screws until the gap j between the down guide 3 and the support shafts c becomes zero.) Tightening torque: 70±7 mN·m (0.7±0.07 kg·cm)
Lock Lever
a
VL-E990E
Down Guide
c i
Screw
b
j
Figure 5. Lock lever section
l 1 4 m m
k
c
n d d c f e g r
2
Screw tightening torque (4 locations) 0.069±0.007 N·m (0.7±0.07kg·cm)
i 3 2 e 2 2 i g f
Figure 6.
4-5-3. Actuating the mechanism with the cassette control ass'y removed
(1) Turn on the power supply with the cabinet and camera unit removed, referring to the Service Manual (so as to actuate the mechanism). (2) Put the cap on the light guide. (3) Press the cassette control down switch through the adhesive tape in the arrow direction so as to turn it on. At this time take care to avoid contact with the cassette. Keep the switch pressed (if the switch is turned off, unloading occurs). Note: To set the Rec mode, press the pin (marked with the asterisk *) of recognition switch (this operation is not necessary in other modes).
Cap
Adhesive tape
Cassette control down switch
Light guide Recognition switch
4-5-4. Drum and Drum base
*
* To replace the upper drum, be sure to put on gloves. Due care is required so that the drum is not damaged. (1) Drum base Remove the 3 mounting screws as shown in Figure 1, and remove the drum base.
Mounting screw
Drum base Upper/lower drum ass'y
(2) Drum motor stator Remove the stator mounting screw with Earth spring the hexagonal wrench as shown in Figure 2, remove the motor stator. Positioning
hole
Phase matching hole Motor stator Stator mounting screw
Upper/lower drum ass'y
Figure 1
Figure 2
4-8
VL-E990E
(3) Upper drum ass'y Remove the upper drum ass'y from the lower drum ass'y as shown in Figure 3. At this time take care so as not to lose the gap shim.
Upper drum ass'y Gap shim Lower drum ass'y
VL-E990E
(5) Balancer Remove the balancer mounting screw as shown in Figure 5, and remove the balancer.
Balancer mounting screw Balancer
Upper drum ass'y
Figure 5 Figure 3 (4) Motor rotor ass'y and rotary transformer rotor ass'y Remove the 2 rotor mounting screws as shown in Figure 4, and remove the motor rotor and the rotary transformer ass'y.
Rotor mounting screw Motor rotor Positioning hole
(6) Lower drum ass'y Remove the FPC mounting screw from the lower drum ass'y as shown in Figure 6.
Upper drum ass'y
FPC mounting screw
Lower drum ass'y
Positioning pin
Figure 6 Figure 4
Install the upper drum in the reverse order of removal. (1) Balancer Mount the balancer to the upper drum ass'y with the balancer mounting screw. The screw tightening torque must be 0.1N·m (tighting torque 1kg·cm). (Figure 5) (2) Motor rotor, rotary transformer rotor ass'y Clean the contact surfaces of rotor ass'y holder and upper drum ass'y, and ascertain that there are no contamination and flaws. Next, adjust the phase so that the positioning pin of rotor ass'y is inserted into the positioning hole of upper drum, and tight fit the rotor ass'y to the lower surface of upper drum ass'y (Figure 7).
Mounting screw hole Cleaning (shaded area) (holder) Positioning pin
Rotary transformer rotor
Rotary transformer Rotor ass'y
Positioning hole To be aligned with RTr rotor side position pin. Cleaning
Figure 7 In this state put the motor rotor on the upper surface of upper drum ass'y, and tighten the mounting screw. At this time make sure that the head screw in the three places is visible through the motor rotor hole (Figure 8). The screw tightening torque must be 0.1N·m (1 kg·cm).
L ch Motor rotor Mounting screw Rotor mounting screw
Motor rotor
Head mounting screw Screw relief hole Alignment position (3 pcs.) R ch Upper drum ass'y
Upper drum ass'y
Rotary transformer rotor ass'y
Figure 8
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VL-E990E
(3) Lower drum ass'y Tighten the FPC mounting screw to the lower drum ass'y. The screw tightening torque must be 0.08N·m (tighting torque 0.8kg·cm). (Figure 6) (4) Upper drum ass'y After fitting the gap shim which was removed when the upper drum ass'y was dismantled to the shaft of lower drum ass'y, fit the upper drum ass'y. (Figure 3) At this time slightly turn the upper drum ass'y by hand to ascertain that RTr does not scrape. If scrape is found, replace the gap shim with the gap shim packaged together with the replacement upper drum ass'y. (5) Drum motor stator Fit the motor stator to the shaft. Then, apply the preliminary pressure 0.07N·m (0.7kg) to the motor stator, tighten the stator mounting screw. The tightening torque must be 0.15N·m (1.5kg·cm). Install the stator so that the chassis line is nearly parallel with the motor stator straight section when it is installed on the chassis. (Figure 9) (6) Drum base Align the positioning pin, and tighten the screws (3 pcs.). (7) Drum ass'y Install the drum ass'y on the main chassis, and tighten the screws (3 pcs.). (8) Tape guide Align the positioning pin, and tighten the screw (one pc.).
VL-E990E
Motor stator Stator set screw
Chassis line FPC Arrange parallel.
Motor stator circuit board
Figure 9
4-5-5. Phase matching
The phase of the following parts must be matched as shown in the figure below. (Ascertain that the marks and round holes align.) (1) Lo relay gear (3) Sub-cam (2) Main cam (4) Mode switch
Lo relay gear
Phase alignment mark (Round hole) Mode switch
4-6. MECHANISM ASSEMBLING METHOD
(1) Adjust the phase of each part. (2) Install screws and washers. (3) Install the segment gear, T arm guide and the M-function lever. Install the eject lever.
a T arm guide Segment gear
Phase alignment mark ( Mark)
Phase alignment mark (Round hole)
M-function lever
Move claw to rear side.
Move claw to rear side. B
Item a S Tight M1.4 x 3 B ø0.8-ø3-t0.2
Tightening torque 70mN·m (0.7kgf·cm)
Quantity 1 1
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(7) Install the guide rail assembly taking care to position it (4) Install the loading block assembly and the capstan motor. correctly. (5) Install the drive gear. At this time, pay attention to the direction of gear. (The small gear must be located in the B A chassis side.)
a A Loading motor Capstan motor a
A D C
a
a
Make sure not deform the arm. a
Move FF downwards
Install the motor under this plate.
Drive gear Position the small gear of the drive towards the chassis.
Item Tightening torque A S Tight M1.4 x 2.5 70mN·m a S Tight M1.4 x 3 70mN·m
Quantity 1 4
(6) Install the guide rail assembly.
Make sure not to deform the arm. Insert the part in the rail and slide it down.
A B C D a
Item Tightening torque S Tight M1.4 x 2.5 70mN·m S Tight M1.4 x 4 40mN·m ø0.8-ø3-t0.2 ø2.1-ø5-t0.25 S Tight M1.4 x 3 70mN·m
Quantity 2 1 1 1 1
Align the marks on the parts.
Square Hollow Mark Round Hole
Triangle Mark
Insert the part in the rail and slide it down.
Edge A Su arm Ass'y T Lo arm Ass'y Segment gear
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(8) Install the drum assembly in the chassis. (9) Install the tape guide in the drum assembly. (10) Install the Si roller. (11) Install the slide chassis.
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T arm guide
B
Tape guide
A A
Drum assembly A
Slide this part towards the T arm. Place the slide chassis on the guide rail. A B
Si roller
B
Roller spring
Main cam pin B Insert the main cam pin into the hole of cam of slide chassis. Sup reel base
Item A M1.4 x 1.5 ø4 B M1.4 x 1.5 ø3.5
Tightening torque 40mN·m 40mN·m
Quantity 1 3
Chassis drawing
(12) Install in the following order: T guide lever spring, T guide lever, pinch lever. Pinch lever (13) Install the swing arm. (14) Install the right guide holder.
Tu guide lever Attach to hook Tu guide lever SPR Attach to hook Take care of position. Pinch lever The pinch lever is positioned on Stopper the stopper. B Secure on back side Claw Swing arm
Claw Take care not to bend the tension band during assembly or disassembly. A
Item A S tight M1.7 x L5.3 B S tight M1.7 x L2.5
Tightening torque 100mN·m 60mN·m
Quantity 3 1
Item A S tight M1.4 x 2.5 B CW ø0.8-ø3-t0.2
Tightening torque 70mN·m 70mN·m
Quantity 1 1
4-12
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VL-E990E
5-1. ADJUSTMENT OF VCR AND CAMERA
5-1. INITIAL SETTING OF E2PROM IC
5-1-1. E2PROM data alterable ways
1) Set the switch of main body to CAM, and use the remote control (RRMCG0033TASA) for adjustment to turn on the adjustment mode. 2) VCR adjustment address setting. V ADJ 00 "00" is blinking After an objective address was established, play key is pushed and set. In addition, numerical change uses a "REW" or "FF" key. 3) VCR adjustment data setting. V ADJ 00 ## Value of "##" differs by an address. After an objective data was established, "PLAY" key is pushed and set. 4) When data of other address are changed successively, push "STOP" key, and please repeat operation to 5) from 3). 5) When SW of the substance is turned into off, data are written to E2PROM from systematic microcomputer.
5-1-2. IC702 (E2PROM)
When the IC702 has been replaced, make the following settings and adjustments. 1. Remove the backup battery (CR2025). 2. Turn power switch to CAMERA. 3. Setting up the V ADJ mode as follows. * After press the CONTINUE key, press the VCR ADJ key on service remote control (RRMCG0033TASA). 4. After setting the above data, clear the V ADJ mode and turn off the power by pull out the battery pack or DC cable. Neglect about 30 seconds after turned of power, because data of address becomes effective after microcomputer is reset. Now the setting of data is completion. Adjustments to follow Make the system controller servo, VCR, and LCD adjustments according to their respective instructions. address 02 0A 03 0B 05 0F 01 04 data 0B F4 FA 05 40 BF 00 00
5-1-3. CAMERA ADJUSTMENT
When the IC2 has been replaced, make the camera adjustment according to its instructions. All the camera adjustment data are written in the E2PROM provided on the lens unit. Therefore, when the lens is replaced, the camera must be adjusted again according to the camera adjusting procedure.
5-2. ADJUSTING THE Y/C, AUDIO AND LCD CIRCUITS ON MODELS WITHOUT A/V IN MODE (A/V IN MODE SET-UP PRODUCE)
1) Set the switch of main body to CAM, and use the remote control (RRMCG0033TASA) for adjustment to turn on the adjustment mode. 2) Set up the adjustment address (example : EE mode adjustment address 14). Once this address has been set up, the A/V IN mode (test mode) is automatically brought and the images appear on the LCD display. 3) Now make the adjustments referring to the instruotions in the manual.
5-3. ADJUSTMENT OF VCR SECTION
5-3-1. Before starting the electric circuit adjustment
· Electric circuit adjustment becomes necessary, in most cases, when any of the wear mechanical parts or the video head has been replaced. Before starting the electric circuit adjustment, be sure to check that the mechanical parts work well (i.e., the mechanical parts have all been perfectly adjusted). In case a trouble or troubles are found in the electric circuitry, be sure to pinpoint the cause(s) by using the measuring instruments described below. After locating the trouble spot(s), then proceed to repair, replacement or adjustment. Do not change the positions of the controls when adequate measuring instruments are not available. · In order to implement a higher-density, smaller machine, most of the electric circuit parts used on the Circuit Boards are of smallsized, surface-mounted type. For replacing part(s) as after-sales service, work with a soldering iron as speedily as possible. The heat resistance of the surface-mounted components is poor, when compared with the larger-sized discrete parts used for television sets and stationary decks, owning to their small sizes. Therefore, exercise due care to avoid long-time exposure of the pins of these parts to the heat of the soldering iron which may possibly damage them. Such care should be exercised especially for chip-layer capacitor replacement. It is advisable to use a temperature-controlled ceramic soldering iron (temperature at the tip: 250°C, contacting time: less than 5 seconds).
5-1
VL-E990E
< Adjusting the video/LCD section > · Measuring instruments: *Color monitor TV set *Digital voltmeter *DC power supply *Audio generator (CR oscillator) *Alignment tape (JiGWR5-5CSP) *AV output cable (accessory) *AC adapter *Oscilloscope *Frequency counter *Signal generator
VL-E990E
*Video recording tape (For Y/C, audio and servo adjustments) *DC cable (AC adapter accessory) *Video extension cables *Vector scope
5-3-2. Servicing the VCR section Adjustment 5-3-2-1. Typical connections
1 2 3
Configuration 1. Name 2. Part No. 3. Code
4
5
1. Extension Cable Inverter~VCR (7pin) 2. QCNW-1265TAZZ 3. AX
1. Extension Cable 1. Extension Cable Camera~VCR (17pin) Camera~VCR (15pin) 2. QCNW-1380TAZZ 2. QCNW-1311TAZZ 3. BD 3. BA
1. Extension Cable 1. Extension Cable LCD~ MECHA~VCR (70pin) VCR (24pin) 2. QCNW-1534TAZZ 2. QCNW-1382TAZZ 3. BS 3. BD
6
insulating sleeve
1. Operation Unit 2. QSW-Z0287TAZZ 3. AR
1. Connector fitting and 1. Connector fitting and 1. Service remote control withdrawing extractor withdrawing tweezers 2. RRMCG0033TASA 2. 9EQPiNSET06GE 3. BT 3. BR
MECHA UNIT
6
OPERATION UNIT 5 4
2 VCR UNIT 3
CAMERA UNIT
1
LCD UNIT
INVERTER
5-2
VL-E990E
· Types of test modes TEST No. 1 3 4 Title Sensors off Automatic battery sensor adjustment Battery adjustment error display PASS mode Camera adjustment mode VCR adjustment mode Automatic switching point adjustment (STOP ADJ) Contents All sensors but the cassette controller switch, dew sensor and battery sensor stay off. Battery sensor's input voltage put in memory. Battery sensor's adjustment errors are displayed at the right of the "past errors" area. Track shift mode (1/4 shift) Camera adjustment mode VCR adjustment mode Play standard tape and call this mode. Switching point is automatically adjusted.
VL-E990E
Sensor on/off
5 6 7 8
All sensors on All but sensors on All sensors on [VCR interrupted]
1 When the battery adjustment mode is selected from the camera adjustment mode with a cassette with the erase protection tab, the VCR is automatically put in the REC mode. · Below discussed are these seven test modes. 1 [TEST No. 1] Sensors off mode All the sensors, except for the cassette controller switch, dew sensor and battery sensor, stay off. This enables to bring the VCR in the loading mode without tape. The VCR/camera performance can now be checked with no tape inside. 2 [TEST No. 3] Automatic battery alarm adjustment Used to automatically adjust the voltage level which makes the "battery" appear on the LCD display. 3 [TEST No. 4] Battery alarm check/error display · The difference between the preset battery alarm voltage and the current supply voltage is displayed as follows. · A past error is displayed at the right of the current battery alarm error. 4 [TEST No. 5] PASS mode Used to adjust the tape travelling condition. The tracking is shifted by 1/4 from the center to make the tape running-related RF envelope fluctuations easier to observe. 5 [TEST No. 6] Camera adjustment mode Used to adjust the camera section. (For details, see Servicing the Camera Section.) 6 [TEST No. 7] VCR adjustment mode Used to adjust the VCR section. (For details, see Servicing the VCR Section.) 7 [TEST No. 8] Automatic switching point adjustment Used to automatically adjust the playback switching point. (For details, see Automatic Adjustment of the Playback Switching Point.)
5-3-2-2. Setting up the VCR section adjustment mode (camera section adjustment)
· Select adjustment items by using addresses. Rewrite the adjustment data to change the settings. Below shown the adjustment procedures and on-screen display.
Enlarged view (CAM ADJ) camera V ADJ VCR, LCD 00 00 (Address) (Data)
V ADJ 00
T-07
Procedural steps 1 Turn up or down the flashing hexadecimal number with the FF or REW key to select the address of a desired adjustment item. (Initial address: 00H) Note: The addresses change as follows. 7E 7F 00 01 02 Press the PB key to read the data of the selected address. Turn up or down the data setting with the FF or REW key. The data display starts flashing. Press the PB key again to write the data setting into the selected address. Press the STOP key in the above step 2 or 4, and the screen returns back to the step 1.
Display ( : flashing) V ADJ
2 3 4 5
V ADJ 2C A3 V ADJ 2C V ADJ 2C 72 V ADJ
When the FF or REW key is held down for 0.3 second or longer, the address selection is repeated in cycles of 100 msec. The data setting changes by ± 4 by holding the key down for 2 seconds or longer.
5-3
VL-E990E 5-3-2-3. Battery shut-off voltage adjusting method
1) 2) 3) 4) 5) 6)
VL-E990E
Supply power to the main unit, using the variable-voltage DC power supply (range of 2.5V to 5V). Set the CAM/OFF/VCR SW to CAM to switch to the camera mode. Load a recordable tape and set the main unit to CAM REC. PAUSE. Set the main unit to TEST mode No. 3, and start recording. Measure voltage between TL901(+) and TL903(GND), and adjust the supply voltage to 3.0V. The adjustment is complete if "BATTERY" is displayed on the monitor screen for a second when the PLAY key of operation unit is pressed. 7) The adjustment is regarded as proper if the auto shut-off is actuated after the warning is displayed when the TEST mode is cancelled. * In case of automatic adjustment of shut-off voltage, adjustment is impossible if voltage is above 3.0V ± 0.2V. If the adjustment is made at 2.9V or below, the low-voltage operation may become unstable.
· Types of test modes Any of the eight test modes can be set up by changing the input voltage at pin (54) of IC703. During any test mode, the REC Start/ Stop commands are not accepted.
5V 8.2k
Micro computer
Adjustment tool
1.2k 1.5k 2.2k 3.3k 5.6k 10k 33k
54
9
8
7
6
5
4
3
2
Use the SW2 thru SW9 switches on the adjustment tool to select the following test modes. SW No. 2 3 Title Sensors off Mechanism adjustment mode Automatic battery sensor adjustment Error display Battery adjustment error display PASS mode Camera adjustment mode VCR adjustment mode Automatic switching point adjustment (STOP ADJ) Contents All sensors but the cassette controller switch, dew sensor and battery sensor stay off. 1 Automatic SP/LP detection prohibited 2 Different-mode detection prohibited 3 ATF sampling limited to center Battery sensor's input voltage put in memory. Past errors appear on the counter display of the viewfinder. Battery sensor's adjustment errors are displayed at the right of the "past errors" area. Track shift mode (1/4 shift) Camera adjustment mode VCR adjustment mode Play standard tape and call this mode. Switching point is automatically adjusted. All sensors on All but sensors on All sensors on [VCR interrupted] Sensor on/off
All sensors on
4 5
6 7 8 9
1 When the battery adjustment mode is selected from the camera adjustment mode with a cassette with the erase protection tab, the VCR is automatically put in the REC mode.
5-4
VL-E990E 5-3-3. Adjusting the VCR circuit
· Test Points on the Video Circuit Board
VL-E990E
5-3-3-1. Adjusting the power circuit
POWER CIRCUIT ADJUSTMENT PROCEDURE
û
Turn on power (camera).
û
5. Check LCD 13.5V.
û
1. Adjust to CAM 15V.
û
6. Check LCD 7V.
û
2. Check P-CON 4.9V.
û
7. Check LCD -15V.
û
3. Check CAM 4.9V.
û
8. Check LCD -7V. Æ Turn off power.
û
4. Check CAM 2.9V.
5-5
VL-E990E
POWER CIRCUIT ADJUSTMENT METHOD Æ Input 6V from the battery terminal, and set the power switch to the camera side. 1. Adjustment to CAM 15V Make an adjustment so that the digital voltmeter indicates 15V ± 0.05V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL910 20H 15V ± 0.05V
VL-E990E
5. Checking of LCD 13.5V Ascertain that the digital voltmeter indicates 13.5V ± 0.2V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL913 13.5V ± 0.2V
2. Checking of P-CON 4.9V Check that the digital voltmeter indicates 4.9V ± 0.1V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL905 4.9V ± 0.1V
6. Checking of LCD 7V Ascertain that the digital voltmeter indicates 7V ± 0.25V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL914 7V ± 0.25V
3. Checking of CAM 4.9V Ascertain that the digital voltmeter indicates 4.9V ± 0.1V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL906 4.9V ± 0.1V
7. Checking of LCD -15V Ascertain that the digital voltmeter indicates -15.2V ±1V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL909 -15.2V ± 1V
4. Checking of CAM 2.9V Ascertain that the digital voltmeter indicates 2.9V± 0.1V. Measuring instrument Measuring terminal Adjustment address Standard Digital voltmeter TL931 2.9V ± 0.1V
8. Checking of LCD -7V Ascertain that the digital voltmeter indicates -7V ± 0.5V. Measuring instrument Measuring terminal Adjustment address Standard Æ Turn off power supply. Digital voltmeter TL911 -7V ± 0.5V
5-3-4. Adjustment of system controller and servo circuit 5-3-4-1. Adjustment of playback switching point
1) Play back the alignment tape (JiGWR5-5CSP) 2) Press the "CONTINUOUS PUSH" and "TEST MODE SELECTION" of adjustment remote controller to set the test mode. (At this time the numeral of "TEST01" blinks.) Measuring instrument Mode Adjustment address Tape Oscilloscope Playback 30h Alignment tape (JiGWR5-5CSP)
3) Using the "FF" and "REW" keys, select "TEST08", and press the playback key to set the SW-P adjustment mode. 4) After a while the adjustment is completed, and operation stops automatically. In case of adjustment failure the tape is ejected automatically. Only in the case when the satisfactory result was not obtained by the adjusting method described above, perform the following adjustment. 1) Connect each signal to the oscilloscope. 1ch: Video output ..... TL801 2ch: H-SW-P ............ TL405 GND: GND ................. TL802 2) Play back the alignment tape (JiGWR5-5CSP) 3) Press the "CONTINUOUS PUSH" and "VCR ADJUSTMENT" of adjustment remote controller to set the VCR adjustment mode. 4) Select the address 30h, set the sync slope of oscilloscope to (), adjust the data with "REW" and "FF" so that the interval between 6H 6H the trigger point and the V sync signal is set to 6H, and fix the data 3H 3H 3H 3H with the "PLAY" button. (See Figure 5.1.1.) 5) Then, set the sync slope to (+), and ascertain that the interval between the trigger point and the V sync signal has been set to 6H. V sync signal V sync signal (See Figure 5.1.2.) 6) Keep the STOP key pressed for about 3 seconds to exit from the adjustment mode. Figure 5.1.2 Figure 5.1.1
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VL-E990E 5-3-5. Y/C circuit adjustment method
Input signal conditions Video signals generated by a pattern generator are used to make electric adjustments in a Y/C circuit. Thus this signal must conform to the standards prescribed for adjustment signals. Use an oscilloscope to check that the video signal is terminated with a 75 resistor, the amplitude of the sync signal component, video component and burst signal are approx. 0.3 Vp-p, 0.7 Vp-p and 0.3 Vp-p, respectively and that they are flat. The relative level of the burst signal and the red signal shall be 0.30:0.66. The color bar used in an electrical adjustment is shown in Figure A. * When a pattern generator is not used Shoot a color bar chart (JiGCHART-4) using a perfectly adjusted video camera. A signal from a perfectly adjusted video camera shooting a color bar chart (JiGCHART-4) can be used as an adjusting signal if the lighting can be set to meet the following conditions: output (75 terminated), the amplitude of the sync signal component, video component and burst signal are approx. 0.3 Vp-p, 0.7 Vp-p and 0.3 Vp-p, respectively. The relative level of the burst signal and the red signal shall be 0.30:0.66. This is shown in Figure B. 1. Adjustment of fixed data writing ADD 23 25 26 DATA 00 01 AB
White (approx. 100%) Burst signal Approx. 0.7 V p-p Approx. 0.3 V p-p Approx. 0.3 Vp-p Red (approx. 0.6 V p-p) Horizontal sync signal
VL-E990E
Figure A Color bar signal produced by a pattern generator
White (approx. 100%) Burst signal Approx. 0.7 V p-p Approx. 0.3 V p-p Approx. 0.3 V p-p Red (approx. 0.6 V p-p ) Horizontal sync signal
Figure B Color bar signal produced by a video camera
(1) Before starting Y/C adjustment, be sure to write the specific data in the addresses listed left. If the data listed left is written after Y/C adjustment, adjusting values may deviate. * Before starting Y/C adjustment, write 00 to the address 31. * At the end of Y/C and LCD adjustment, write FF to the address 31.
2. Adjustment of input Y level Measuring instrument Mode Input signal Measuring point Adjustment address Adjustment level Oscilloscope VCR STOP Color bar TL801 32 500 mVp-p ± 20 mVp-p
500±20mVp-p
(1) Input the color bar signal into the video input/output terminal in the VCR STOP mode. (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 32. Select the address, using the FF or REW key, and fix it with the PB key. (3) Make an adjustment so as to get 500 mVp-p between SYNC TIP and WHITE PEAK on TL801. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 32. 3. Adjustment of playback Y level Measuring instrument Mode Playback signal Measuring point Adjustment address Adjustment level Oscilloscope PB Color bar (JiGWR5-5CSP) TL801 27 500 mVp-p ± 20 mVp-p
500±20mVp-p
(1) Set the color bar tape for alignment (JiGWR5-5CSP). (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 27. Select the address, using the FF or REW key, and fix it with the PB key. (It will automatically set the playback mode.) (3) Make an adjustment so as to get 500 mVp-p between SYNC TIP and WHITE PEAK on TL801. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 27.
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4. Adjustment of Y-FM carrier f0 Measuring instrument Frequency counter Mode VCR STOP Input signal No input Measuring point TL7401 Adjustment address 33 Adjustment level 4.2 ± 0.02 MHz (1) Input the no-signal into the video input/output terminal in the VCR STOP mode. At this time, do not pull out the jack on the Viewcam side. (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 33. Select the address, using the FF or REW key, and fix it with the PB key. (3) Make an adjustment so that the frequency counter indicates 4.2 MHz on TL7401. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 33.
VL-E990E
5. Adjustment of Y-FM deviation Measuring instrument Oscilloscope Mode REC/PB (self-playback/recording) Input signal Color bar 500±20mVp-p Measuring point TL801 Adjustment address 34 Adjustment level 500 mVp-p ± 20 mVp-p (1) Set the recordable tape. (2) Before entering the adjustment mode, make self-playback/recording of color bar with an external output. Measure whether the playback output at this time is 500 mVp-p on TL801. (3) Enter the VCR adjustment mode with an adjustment remote control, and select the address 34. Select the address, using the FF or REW key, and fix it with the PB key. (4) When decreasing by 10 mVp-p as compared to the measurement value of (2), increase the data of address 34 by about 5 (digit). (Reference) When increasing by 10 mVp-p as compared to the measurement value of (2), decrease the data of address 34 by about 5 (digit). (Reference) Select the address, using the FF or REW key, and fix it with the PB key. (5) Release the adjustment mode, and make self-playback/recording again. When the measuring value at this time is in the standard value, the adjustment is completed. If it is not in the standard value, repeat the steps (2) - (4). (6) After completing the adjustment of (5), check the adjusting value of Y-FM carrier f0 (4.2 MHz in no input). When the measuring value exceeds the standard value of carrier f0, make an adjustment of Y-FM carrier f0 again. 6. Adjustment of Y recording current C-SYNC Measuring instrument Oscilloscope (TL451) Mode VCR STOP Input signal Color bar Measuring point TL451 Adjustment address 35 200mVp-p Adjustment level 200 ± 10 mVp-p (1) Input the color bar signal into the video input/output terminal in the VCR STOP mode. (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 35. Select the address, using the FF or REW key, and fix it with the PB key. (3) Make an adjustment so that the SYNC TIP portion gets 200 mVp-p on TL451. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 35. 7. Adjustment of comb filter Minimum chroma component Measuring instrument Oscilloscope Mode VCR STOP Input signal Color bar Measuring point TL404 Adjustment address Phase: 36, Gain: 37 Adjustment level Minimum chroma component (1) Input the color bar signal into the video input/output terminal in the VCR STOP mode. (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 36. Select the address, using the FF or REW key, and fix it with the PB key. (3) Make an adjustment so as to minimize the chroma component on TL404. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 36. (4) Enter the VCR adjustment mode with an adjustment remote control, and select the address 37. Select the address, using the FF or REW key, and fix it with the PB key. (5) Make an adjustment so as to minimize the chroma component on TL401. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 37. (6) Repeat the steps (2) - (3).
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8. Adjustment of chroma emphasis f0 Measuring instrument Mode Input signal Measuring point Adjustment address Adjustment level Oscilloscope VCR STOP Color bar TL7402 38 Minimum chroma component
Minimum chroma component
VL-E990E
(1) Input the color bar signal into the video input/output terminal in the VCR STOP mode. (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 38. Select the address, using the FF or REW key, and fix it with the PB key. (3) Make an adjustment so as to get minimum chroma component on TL7402. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 38. 9. Adjustment of C recording current Measuring instrument Mode Input signal Measuring point Adjustment address Adjustment level Oscilloscope VCR STOP Color bar TL7402 39 175 ± 10 mVp-p
Red part
175mVp-p
(1) Input the color bar signal into the video input/output terminal in the VCR STOP mode. (2) Enter the VCR adjustment mode with an adjustment remote control, and select the address 39. Select the address, using the FF or REW key, and fix it with the PB key. (3) Make an adjustment so that the amplitude of red portion gets 175 mVp-p on TL7402. Select the data, using the FF or REW key, and fix it with the PB key. After the adjustment, press the STOP key, and exit from the adjustment address 39.
5-3-6. Adjustment of audio circuit
1. Adjustment of filter f0 Measuring instrument Mode Input signal (tape) Measuring terminal Adjustment address Adjustment value Oscilloscope PB JiGWR5-5CSP TL605/AUDIO.OUT 21 Clear the waveform 1) Set the alignment tape (JiGWR5-5CSP) 2) Using the adjustment remote controller (RRMCG0033TASA), set the VCR adjustment mode, and set the address "21" with the operation switch (FF/REWIND key). 3) Play back the standard tape. 4) Using the operation switch (FF/REWIND key), make an adjustment so that the most clear playback waveform is obtained on TL605. 5) Press the operation switch (PLAYBACK key) to write the data. 6) Press the operation switch (STOP key) to exit from the address "21". (The address "21" blinks.)
Audio Check Checking of self-recording/playback Measuring instrument Mode Input signal (tape) Measuring terminal Adjustment address Adjustment value Valve voltmeter (oscilloscope) REC PB 400 Hz, -8 dBs (872 mVp-p) Audio IN/OUT -- -8 dBs ± 4 dBs (580 to 1370 mVp-p)
1) Input the audio signal (400Hz, -8dBs) into the Audio line IN/ OUT terminal, and record. 2) Connect the valve voltmeter (oscilloscope) to the Audio line IN/OUT terminal. 3) Play back the record, and ascertain that the output waveform level is -8 dBs ± 4 dBs (580 to 1370 mVp-p on the oscilloscope). 4) If there is any deviation from the specified value, perform adjustment again as stated in items 1) above, and check again the self-recording/playback level.
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VL-E990E 5-3-7. Adjustment of LCD display circuit
Adjustment procedures and connections are the same as with the VCR section. (Refer to item 5-3-3) 1. Contrast adjustment Measuring point TL817 (G-OUT) Address 40 Mode VCR AV input Adjusting method 1) Set the data of address 47 at the address 80. 2) Input white 100% as an AV input. 3) Connect TL805 to GND. (The 1H inversion stops.) 4) Connect 220 K between TL803 and GND. 5) Seeing the waveform of TL817 (G-OUT), make an adjustment between the white peak and the sync tip. Adjustment standard 3.35V ± 0.1V Remarks -------------- 2. R-W/B adjustment Measuring point Address Mode Adjusting method
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V
Adjustment standard Remarks 3. B-W/B adjustment Measuring point Address Mode Adjusting method
TL817 (G-OUT) TL816 (R-OUT) 41 VCR AV input 1) AV input: Nonsignal. 2) TL817 (G-OUT): Oscilloscope CH1 TL816 (R-OUT): Oscilloscope CH2 3) Adjust P-P of TL816 becomes bigger 0.15V than TL817. ±0.1Vp-p --------------
G R
Adjustment standard Remarks 4. VCO adjustment Measuring point Address Mode Adjusting method Adjustment standard Remarks
TL817 (G-OUT) TL818(B-OUT) 42 VCR AV input 1) AV input: Nonsignal. 2) TL817 (G-OUT): Oscilloscope CH1 3) TL818 (B-OUT): Oscilloscope CH2 4) Adjust P-