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2. Alignment and Adjustment
2-1 VCR Adjustmant
2-1-1 Adjustment Preparation
1) Before you start OE Use the buttons on the SET key when adjusting VCR. ´ When changing the adjustment item, please press the "EASY-Q" and "DISPLAY" buttons on the Set. You can change the adjustment value to move the "MENU Dial" Up or Down. ¨ Press the push the "ENTER button" when storing confirmed adjustment value of each adjustment step in EEPROM. ^ The OSD shows "OK" after finishing each adjustment step. Ø To clear the adjustment mode, pull out the power source.
2) Function of each buttons on the Set Key Buttons ENTER button (Confirm) MENU Dial down (Data Down) MENU Dial up (Data Up) EASY-Q (Mode Up) DISPLAY (Mode Down) 3) How to get into the VCR adjust mode [STEP 1] OE Connect the Power source. ´ Set the Power Switch to "PLAYER" position and Mode Switch to "TAPE" position. EASY-Q Button STOP Button Power Switch Description Stores changed value in the adjustment and auto adjustment mode. Changes data in the adjustment state. Changes mode.
MENU Button MENU Dial ENTER Button
Mode Switch DISPLAY Button PB ZOOM Button Fig. 2-1 Samsung Electronics 2-1
Alignment and Adjustments
[STEP 2] OE Press and hold the "STOP" and "PB ZOOM" buttons on the video camera at the same time for more than 5 seconds. ´ When monitor OSD appears as shown Fig. 2-2, the adjustment mode has been activated successfully. Move the "MENU Dial" to highlight VCR ADJ and push the "MENU Dial". ¨ Monitor OSD shows Fig. 2-3. Then VCR adjustment mode has been activated successfully. [STEP 3] If you want to finish the adjustment mode, you have to do Power Reset. The Power Reset means that you pull out the power source and pull in it again.
ADJ ITEM VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ
Fig. 2-2
VCRADJ 600
EPR 00
EVR 00
Indicates current adjustment item Indicates the adjusted values Indicates preset values
Fig. 2-3
2-1-2 VCR Adjustment
Mode(Address) 620 Name SWP Position Value 80 Description Head Switching Position Adjust
OE Get into VCR ADJUST mode. ´ Move to the VCR ADJUST address "620". Play standard tape, and "Head Switching Position" will be adjusted automatically.
2-2
Samsung Electronics
Alignment and Adjustments
2-2 Camera Adjustmant
Note : How to adjust the camera system. 1) EEPROM stores confirmed adjustment value of each adjustment step. 2) DSP (Digital Signal Process : ICA01-Main PCB) digitalizes the camera signal. 3) When changing IC705-Main PCB of EEPROM, readjust Main PCB. While changing LCD PCB and CVF PCB- always readjust each part. Since EEPROM stores confirmed adjustment value of each adjustment step, readjusting must be performed in order to store the changed data. 4) Adjust the following items after changing LENS Ass'y. OE Lens Zoom Track ´ Auto HALL Auto IRIS 5) Adjust the following items after changing EEPROM and Camera Main PCB. OE Lens Zoom Track ´ Zoom VR Center Auto HALL ¨ Auto IRIS ^ Auto White Balance (indoor) Ø Auto White Balance (outdoor)
2-2-1 Adjustment Preparation
1) Before you start OE Use the buttons on the SET key when adjusting Camera. ´ When changing the adjustment item, please press the "EASY-Q" and "DISPLAY" buttons on the Set. You can change the adjustment value to move the "MENU Dial" Up or Down. ¨ Press the push the "ENTER button" when storing confirmed adjustment value of each adjustment step in EEPROM. ^ The OSD shows "OK" after finishing each adjustment step. Ø To clear the adjustment mode, pull out the power source. 2) Function of each buttons on the Sst Key Buttons ENTER BUTTON (Confirm) MENU Dial down (Data Down) MENU Dial up (Data Up) EASY-Q (Mode Up) DISPLAY (Mode Down) Description Stores changed value in the adjustment and auto adjustment mode. Changes data in the adjustment state. Changes mode.
Samsung Electronics
2-3
Alignment and Adjustments
5) How to set up the camera adjustment mode [STEP 1] OE Connect the Power source. ´ Set the Power Switch to "CAM" position and Mode Switch to "TAPE" position. [STEP 2] OE Press and hold the "STOP" and "PB ZOOM" buttons on the video camera at the same time for more than 5 seconds. ´ When monitor OSD appears as shown Fig. 2-5, the adjustment mode has been activated successfully. Move the "MENU Dial" to highlight CAM ADJ and push the "ENTER button". ¨ Monitor OSD shows Fig. 2-6. Then Camera adjustment mode has been activated successfully. [STEP 3] If you want to finish the adjustment mode, you have to do Power Reset. The Power Reset means that you pull out the power source and pull in it again. EASY-Q Button STOP Button Power Switch
MENU Button MENU Dial ENTER Button
Mode Switch DISPLAY Button PB ZOOM Button Fig. 2-4
ADJ ITEM VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ
Fig. 2-5
2-4
Samsung Electronics
Alignment and Adjustments
2-2-2 Camera Adjustment
Note : "XX XX" indicate the previous preset value and adjusted value. Press the "ENTER button" (Confirm) to store the adjusted value.
CAMADJ 00DF
EPR EVR XX XX Adjusted values Stored values
Fig. 2-6 1) EEPROM Data Initialize Caution : This adjustment must do following items changing new EEPROM (IC705) or Main PCB. OE Press the "EASY-Q"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00DF XX XX". ´ Using "MENU Dial"(Data Up/Down) so that display data of EVR is "A0" Press the "ENTER button" (Confirm). ¨ The OSD shows "OK" after huithing the initalize. 2) Lens Zoom Track Caution : For whole zoom range, it shall be in focus. The location of a focus lens is moving depending on the location of Zoom Lens. During adjusting, micom measures the focus location from a near distance to a long. OE Camera is set to E-E mode. ´ Focus chart photo. Ensure that camera is left an about 3m distance from a focus chart and the focus of lens is placed vertically. Attach a focus chart to white or gray wall of a flat surface. ¨ Connect a video output terminal to a TV. ^ Press the "EASY-Q"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00DE XX XX". Ø Press the "ENTER button" (Confirm). Never impact on the lens when adjusting zoom and focus Lens. The OSD shows "OK" after finishing the adjustment. 3M ± 1cm (Be sure to maintain the distance)
LENS
CCD
Fig. 2-7 Samsung Electronics 2-5
Alignment and Adjustments
3) Zoom VR Center OE Connect a video output terminal to a TV. ´ Press the "EASY"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00D6 XX XX". Press the "ENTER button" (Confirm). ¨ Then Micom finds out Zoom VR center position. Store Zoom VR center value in OB7.
4) Auto HALL OE Connect a video output terminal to a TV. ´ Press the "EASY-Q"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00CD XX XX". Press the "ENTER button" (Confirm). ¨ Then micom finds out max. Hall value with an iris opened and min. Hall value with an iris closed. Store max. and min. value of Hall in OAD and OAC respectively. ^ The OSD shows "OK" after finishing the adjustment.
5) Auto IRIS Level OE Connect a video output terminal to a wave form monitor and a TV. ´ Press the "EASY-Q"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00CE XX XX". Press the "ENTER button" (Confirm). ¨ Then micom finds out max. Hall value with an iris opened and min. Hall value with an iris closed. Store max. and min. value of in 00BC, 00BD and 00BB respectively. ^ The OSD shows "OK" after finishing the adjustment.
6) Auto White Balance (indoor) OE Camera mode & 3100° K gray scale chart. ´ Connect a video output terminal to a vectorscope and a TV. Press the "EASY-Q"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00D4 XX XX". ¨ Ensure that camera picks up image 40µs on 3100°K gray scale chart precisely and the illumination is 1500~2000 Lux. ^ Press the "ENTER button" (Confirm) to ensure that white spot on a vectorscope is moving in the middle of screen. Ø The OSD shows "OK" after finishing the adjustment.
7) Auto White Balance (outdoor) OE Camera mode & 5100° K gray scale chart. ´ Connect a video output terminal to a vectorscope and a TV. Press the "EASY-Q"(Mode Up)/"DISPLAY"(Mode Down) buttons so that OSD shows "00D5 XX XX". ¨ Ensure that camera picks up image 40 µs on 5100 gray scale chart (3100 gray scale chart + C16 filter) precisely and the illumination is 1500~2000 Lux. ^ Press the "ENTER button" (Confirm) to ensure that white spot on a vectorscope is moving in the middle of screen. Ø The OSD shows "OK" after finishing the adjustment.
2-6
Samsung Electronics
Alignment and Adjustments
2-3 LCD Adjustmant
2-3-1 Adjustment Preparation
1) Before you start OE Use the buttons on the SET key when adjusting LCD. ´ When changing the adjustment item, please press the "EASY-Q" and "DISPLAY" buttons on the Set. You can change the adjustment value to move the "MENU Dial" Up or Down. ¨ Press the push the "ENTER button" when storing confirmed adjustment value of each adjustment step in EEPROM. ^ The OSD shows "OK" after finishing each adjustment step. Ø To clear the adjustment mode, pull out the power source.
2) Function of each buttons on the Set Key Buttons ENTER button (Confirm) MENU Dial down (Data Down) MENU Dial up (Data Up) EASY-Q (Mode Up) DISPLAY (Mode Down) Description Stores changed value in the adjustment and auto adjustment mode. Changes data in the adjustment state. Changes mode.
Samsung Electronics
2-7
Alignment and Adjustments
3) How to get into the LCD adjust mode [STEP 1] OE Connect the Power source. ´ Set the Power Switch to "CAM" position and Mode Switch to "TAPE" position. [STEP 2] OE Press and hold the "STOP" and "PB ZOOM" buttons on the video camera at the same time for more than 5 seconds. ´ When "ADJ ITEM" OSD appears at the monitor as shown Fig. 2-9, move to a " CAM ADJ" through "Menu Dial" scrolling and press the "ENTER button". Fig. 2-10 will be shown in LCD screen and move to Address No. "012C" to adjust its value as "01". In order to save the modification value, press the "ENTER button" again. (this is for setting up of Color Bar output.) After completing all of adjustment, the Value of Address No. "012C" must necessarily return as "00". Move a Power Switch to OFF. (Don't have to plug it out) EASY-Q Button STOP Button Power Switch
MENU Button MENU Dial ENTER Button
Mode Switch DISPLAY Button PB ZOOM Button Fig. 2-8
ADJ ITEM VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ
CAMADJ 012C
EPR EVR XX 01
Fig. 2-9
Adjusted values [01] Address values [012C]
Fig. 2-10
2-8
Samsung Electronics
Alignment and Adjustments
[STEP 3] OE Set the Power Switch to "CAM" position and Mode Switch to "TAPE" position. ´ Press and hold the "STOP" and "PB ZOOM" buttons on the video camera at the same time for more than 5 seconds. When monitor OSD appears as shown Fig. 2-11, the adjustment mode has been activated successfully. ¨ Move the "MENU Dial" to highlight LCD/CVF ADJ and push the "ENTER button". ^ Monitor OSD shows Fig. 2-12. Then LCD adjustment mode has been activated successfully.
ADJ ITEM VCR ADJ CAM ADJ CODEC ADJ PRML ADJ CAM DISP DSC ADJ LCD/CVF ADJ
LCD XX
EPR : XX
EVR : XX
Fig. 2-11
Adjusted values Address values
Fig. 2-12
Samsung Electronics
2-9
Alignment and Adjustments
2-3-2 LCD Adjustment
SHORT POINT (SOLDER LAND 2 POINTS SHORT) Fig. 2-13 Location of Test point 1) Initial Adjustment OE Let two solder lands short. (Refer to Fig. 2-13, two short point) ´ Press a "STOP" button for 3 seconds or more until "INT OK" appears. (See Fig. 2-14)
INT OK
Fig. 2-14 You continuously let two solder lands short until completing all adjustment (from 1] Initial Adj. to 7] VCO Adj.) and they must be opened after completing all adjustment. If two solder lands are continuously shorted, the product doesn't work correctly.
2-10
Samsung Electronics
Alignment and Adjustments
2-4 Deck Adjustmant
2-4-1 Operation Without Housing Assembly
1) Remove the Housing Ass'y from the Deck Ass'y. 2) Connect the Mechanical Chassis to the recorder circuit to supply voltage. 3) Set to Unload mode. 4) Press the S/W Push (Keep ON status)to start loading, and push the PLAY Key. (Cover the Top/End sensor with black tape, because they do not operate.) Note : For the removal of the Housing Ass'y refer to 4-2-2 (Training Manual ; page 4-8).
Connceted the Recorder Circuit
SWITCH C-IN
Fig. 2-15
2-4-2 Setting Mechanical Mode (Without Recorder Circuit)
1) Set the power-supply output to approx. 3V~5V. 2) Choose the polarity (depending on whether loading or unloading). 3) Supply the voltage to the Motor Loading, and set to the desired mode. DC POWER SUPPLY
A B
A + B + Movement of Chassis Unloading Loading
Fig. 2-16
Samsung Electronics
2-11
Alignment and Adjustments
2-4-3 Maintenance
Carry out the following periodic maintenance checks in order to fully exercise all functions, operations and tape. After repairing, service the set as follows: 1) Cleaning of Drum Assembly OE Gently apply lens tissue soaked in ethyl alcohol to the Drum assembly. Clean the Upper Drum assembly while rotating it slowly counterclockwise(by hand). Note : Do not rotate the motor by power or rotate the Upper Drum assembly clockwise. Also, the Head tip will be damaged if the lens tissue is moved in a perpendicular direction. Be sure to follow these instructions when cleaning the Drum Ass'y 2) Cleaning of Tape Path OE In EJECT mode, clean the tape path system(from Pole Tension P1 through Pole Review P8, Pinch Roller and Capstan Shaft) and the Lower Drum. Using the lens tissue soaked in ethyl alcohol. Note : Make sure that no oil or grease adheres to the lens tissue.
P4 P7
P1 P2 P3
P5 P6 P8 PINCH ROLLER
Fig. 2-17
2-12
Samsung Electronics
Alignment and Adjustments
3) Periodic Maintenance and Check List When overhauling, refer to the following table. Maintenance checks
Tape path system
Hours of use (H) 500 O O 1000 O O 1500 O O 2000 O O 2500 O O 3000 O O 3500 O O 4000 O O 4500 O O 5000 O O
Remark
D R I V I N G
S Y S T E M
Performance
Confirmation
Cleaning of tape path Cleaning and degaussing of drum ass'y Capstan Shaft Gear Capstan Gear Pully Shaft Belt Timing Motor Loading Abnormal Noise Back Tension Brake System PB, REV Torque Measurement
- Never let oil get on to the tape path surface.
O : Cleaning
: Oil
: Confirmation
When lubrication bearings, be sure to keep the oil free of dust. (Oil contaminated with dust might cause the bearings to wear out or seize.) A "drop"of oil is defined as the amount attached to the tip of a Ø 2mm stick as shown in Fig. 2-18.
2mm
OIL Fig. 2-18
Samsung Electronics
2-13
Alignment and Adjustments
2-4-4 Mechanical Check and Adjustment
2-4-4(a) Tension Regulator Adjustment 1) Disassembly OE For the removal of the Housing Ass'y refer to 4-2-2 (Training Manual ; page 4-8). 2) Adjustment OE Set to PLAY mode (without cassette tape). ´ Check that the distance between external surface of Holder Loading and extenal diamater of Arm Tension is 0.7±0.3mm. (Fig. 2-19) If necessary, proceed to step 4. ¨ If the Arm Tension OE is located inside (or right) the position specified, adjust the Cap Adjust OE toward arrow "A". (If it is located outside (or left), adjust toward arrow "B".) Note : Check if the Arm Tension can be moved toward arrow "C" in PB mode. 3) Reassembly OE For the removal of the Housing Ass'y refer to 4-2-2 (Training Manual ; page 4-8).
"C" ARM TENSION OE
CAP ADJUST ´ "A" "B"
Fig. 2-19
2-14
Samsung Electronics
Alignment and Adjustments
2-4-4(b) Back Tension Confirmation 1) Set up the cassette-torque tape. 2) Set to CAMERA mode, push the EDIT(+) KEY and check that the torque value of Reel S is 5.5±1g.cm. 3) If necessary, proceed to step 4. 4) If the Tension value is Low specified, moved to toward "a". If the Tension value is High specified, moved to toward "c". Reference : After changed, insert Cassette torque tape and confirm torque value.
Fig. 2-20 2-4-4(c) PB/REV Torque check 1) Set up the cassette torque tape. 2) Set to CAMERA mode, Push the EDIT(+) button and check that the torque value of Reel T is 9±3g.cm. 3) Push the EDIT(-) button and check that the torque value of Reel S is 15±3g.cm. 4) If necessary, replace the defective Reel Disk S, T Ass'y. 2-4-4(d) Reel Table Height Check 1) Removal OE For the removal of the Housing Ass'y refer to 4-2-2 (Training Manual ; page 4-8). ´ For the removal of the Idler Ass'y refer to 4-2-3 (Training Manual ; page 4-9). 2) Check OE Using vernier calipers, check the following distances : From the upper surface of the Sub Chassis to the resting surfaces of Reel S, T table should each be 3.9±0.1mm. 3) Mounting OE For the removal of the Idler Ass'y refer to 4-2-3 (Training Manual ; page 4-9). ´ For the removal of the Housing Ass'y refer to 4-2-2 (Training Manual ; page 4-8). REEL DISK S TABLE RESTING SURFACE REEL DISK T TABLE RESTING SURFACE
CHASSIS SUB Fig. 2-21
Samsung Electronics
2-15
Alignment and Adjustments
2-4-5 Tape Path Adjustment
2-4-5(a) Preparation for Adjustment OE Clean the tape running surface (Poles, Drum, Capstan Shaft, Pinch Roller). ´ Observe the PB RF signal and Head Switching Pulse on an oscilloscope. Play back the alignment tape. ¨ Check that the waveform of the RF signal is flat at both inlet and outlet(A in Fig. 2-23). If not flat (B or C in Fig. 2-23), do adjustments 2-4-5(b) through 2-4-5(d). INLET OUTLET
A NORMAL
B DEFECT AT INLET
C DEFECT AT OUTLET
9 8 7 6 5 4 3 2 1 10 11 12 13 14 15 16 17 18
CNR02
RF Signal (Pin 3 of CNR02) Head Switching (Pin 2 of CNR02)
Fig. 2-23
Fig. 2-22 Rear PCB (Bottom Side) P5 P6 P7
P1
P2
P3
P8
Fig. 2-24 2-16 Samsung Electronics
Alignment and Adjustments
2-4-5(b) Tracking adjustment OE Play Back the alignment tape. ´ Turn P3 to flatten the waveform at the inlet. Turn P5 to flatten the waveform at the outlet. MOTOR CAPSTAN P6 P8
P2
Fig. 2-25
2-4-5(c) Take Up Path Adjustment OE Play back the alignment tape, and confirm that the tape is not twisted between the Guide Roller T and Capstan. (If the tape is twisted, turn P8, Fig. 2-25) ´ Set to REV mode and observe the outlet waveform of PB RF signal. (Fig. 2-26) If the outlet waveform is out-of-spec, turn P8 counterclockwise, and redo steps 1 and 2.
(DEFECTIVE) Fig. 2-26
(CORRECT)
Samsung Electronics
2-17
Alignment and Adjustments
2-4-5(d) Check After Adjustment 1) Tracking Check OE Playback the alignment tape. ´ Confirm that the minimum amplitude value(E min.)is 80% of the maximum value(E max.) or larger. (Fig. 2-27) Confirm that no large fluctuation occur on the waveform. (Fig. 2-28)
C A Emin Emax C Emin Emax
80(%)
C Fig. 2-28
1 A 8
Fig. 2-27
2) CUE and REV Check OE Playback the alignment tape, and set to REV mode. Confirm that the waveform peaks have a uniform Pitch. (Fig. 2-29 A) If the track pitch is not uniform, do section 2-4-5(b) (Tracking adjustment) and 2-4-5(c) (P8 adjustment). ´ Set to CUE mode. Confirm that the waveform peaks still have a uniform pitch. (Fig. 2-29 B) If the track pitch is not uniform, do section 2-4-5(b) (Tracking Adjustment). a a b c b c a b c
Fig. 2-29
2-18
Samsung Electronics
Alignment and Adjustments
3) Rise Time Check OE Playback the alignment tape. ´ Set to playback mode, and confirm that the waveform of PB RF signal rises flat within 3 seconds. Also confirm that the tape is not twisted or curled around the Pinch Roller. (Fig. 2-30) Run the tape in CUE/REV and FF/REW modes, then playback. Confirm the waveform of PB RF signal rises flat within 3 seconds. Also confirm that the tape is not twisted or curled around the Pinch Roller. ¨ Repeat steps 2. and 3. 4) Tape Path Check OE In CUE and REV modes, check that the tape is not curled around the P2, P6 upper flange and P8 upper/Lower flanges.
MOTOR CAPSTAN P6 P8
P2
Fig. 2-30
P1
P2 P3
P5
P6
P8
FROM THE S REEL Fig. 2-31
TO THE T REEL
Samsung Electronics
2-19
Alignment and Adjustments
MEMO
2-20
Samsung Electronics