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HV-FX4100
K
SERVICE MANUAL
STEREO VIDEO CASSETTE RECORDER BASIC TAPE MECHANISM : OVD-6
SPECIFICATIONS
POWER REQUIREMENTS ................. 230 V AC, 50 Hz POWER CONSUMPTION ................... 17W Standby at Power save mode: 3w WEIGHT .............................................. 3.5 kg (7.7 lbs.) DIMENSIONS ...................................... 380 mm (W) x 267 mm (D) x 95 mm (H) (15 x 10 5/8 x 3 3/4 in.) OPERATING TEMPERATURE ........... 5°C to 40°C VIDEO RECORDING SYSTEM .......... Rotary 2 head helical scanning system VIDEO SIGNAL SYSTEM ................... PAL colour system, 625 lines, 50 fields VIDEO HEAD ...................................... Double azimuth 4 heads USABLE CASSETTES ........................ VHS video cassette CHANNEL COVERAGE ...................... UHF: 21 to 69 RF OUTPUT ........................................ UHF channels between 23 and 69, 73 dBµ HORIZONTAL RESOLUTION ............ 240 lines (SP) TIMER BACKUP ................................. 30 minutes TUNER SYSTEM ................................ Frequency synthesized tuner TV SYSTEM ........................................ I FAST-FORWARD TIME ...................... 135 seconds with E-180 tape REWIND TIME .................................... 108 seconds with E-180 tape HI-FI FREQUENCY RESPONSE ....... 20 Hz-20 KHz HI-FI DYNAMIC RANGE ..................... More than 75 dB HI-FI WOW AND FLUTTER ............. Less than 0.01% (nominal) TAPE SPEED ................................... PAL SP: 23.39 mm/sec LP: 11.69 mm/sec NTSC (playback only) SP: 33.35 mm/sec LP: 16.67 mm/sec EP: 11.12 mm/sec RECORDING/PLAYBACK TIME ..... PAL SP: 5 hours with E-300 tape LP: 10 hours with E-300 tape NTSC (playback only) SP: 3 hours 30 minutes with T-210 tape LP: 7 hours with T-210 tape EP: 10 hours 30 minutes with T-210 tape VIDEO INPUT ................................... 1.0 Vp-p, 75 ohm, unbalanced VIDEO OUTPUT .............................. 1.0 Vp-p, 75 ohm, unbalanced VIDEO S/N ....................................... 53 dB (nominal) AUDIO INPUT .................................. SCART: 3.8 dBs, 50 Kohm RCA: 3.8 dBs, 50 Kohm AUDIO OUTPUT .............................. SCART: 3.8 dBs, less than 1 Kohm RCA: 3.8 dBs, less than 1 Kohm AUDIO TRACK ................................. 3 tracks (Hi-Fi sound 2 tracks, Normal sound 1 track)
· Design and specifications are subject to change without notice.
S/M Code No. 09-001-338-6N1
DA TA
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS
1-1: TOP CABINET, FRONT CABINET AND OPERATION 1, 2 PCB (Refer to Fig. 1-1) 1. Remove the 4 screws 1. 2. Remove the Top Cabinet in the direction of arrow (A). 3. Disconnect the following connectors: (CP651 and CP652). 4. Unlock the 7 supports 2. 5. Remove the Front Cabinet in the direction of arrow (B). 6. Remove the 3 screws 3 and remove the Operation 1 PCB. 7. Remove the 4 screws 4 and remove the Operation 2 PCB.
1
Top Cabinet
1-3: DECK CHASSIS (Refer to Fig. 1-3) 1. Remove the 3 screws 1. 2. Remove the screw 2. 3. Disconnect the following connectors: (CP1001, CP1002, CP1004, CP4001, CP4002 and CP4003). 4. Remove the Deck Chassis in the direction of arrow.
1 1 1
Deck Chassis
2
1 1
(A) Operation 2 PCB Front Cabinet
1
Bottom Plate
Fig. 1-3
2
4 4 4 4 (B) 2 2 3 3 3 2
Operation 1 PCB
1-4: SYSCON PCB (Refer to Fig. 1-4) 1. Remove the screw 1. 2. Remove the 2 screws 2. 3. Remove the 2 screws 3. 4. Remove the Syscon PCB in the direction of arrow. Fig. 1-1
3 3
2 2
2
1-2: FLAP (Refer to Fig. 1-2) 1. Open Flap to 90° and flex in direction of arrow (A), at the same time slide in direction of arrow (B). 2. Then lift in direction of arrow (C).
Syscon PCB
1
2
2
(A)
(C)
Bottom Plate
(B)
Fig. 1-4
Flap
Fig. 1-2
B1-1
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1) 1. Remove the 2 screws 1. 2. Slide the 2 supports 2 and remove the Top Bracket. NOTE
Tape Guide L
NOTE When you install the Tape Guide L, install as shown in the circle of Fig. 2-3-B. (Refer to Fig. 2-3-B)
When you install the Top Bracket, install the screw (1) first, then install the screw (2).
REC Lever (2)
1
Top Bracket
(1)
1
Top Bracket · The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-B
2-4: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-4)
2
Main Chassis Main Chassis · Screw Torque: 5 ± 0.5kgf·cm
2
1. Move the Cassette Holder Ass'y to the front side. 2. Push the Locker R to remove the Cassette Side R. 3. Remove the Cassette Side L. Fig. 2-1
Cassette Side R Main Chassis Locker R
2-2: DECK COVER/FLAP LEVER/TAPE GUIDE R (Refer to Fig. 2-2) 1. Move the Cassette Holder Ass'y to the back side. 2. Unlock the support 1 and remove the Deck Cover. 3. Remove the Polyslider Washer 2. 4. Remove the Flap Lever. 5. Unlock the 3 supports 3 and remove the Tape Guide R.
Cassette Side L Tape Guide R Main Chassis
Deck Cover
Fig. 2-4
Flap Lever
1
2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)
3 3 3 2
Main Chassis
1. Remove the Locker Spring. 2. Unlock the 4 supports 1 and then remove the Cassette Side L/R. NOTE Fig. 2-2 When you install the Cassette Side L/R, be sure to move the Locker L/R after installing.
1 1
Locker Spring
2-3: TAPE GUIDE L (Refer to Fig. 2-3-A) 1. Move the Cassette Holder Ass'y to the back side. 2. Unlock the 2 supports 1 and remove the Tape Guide L. 3. Remove the REC Lever. (Recorder only)
Locker R REC Lever Cassette Side R Tape Guide L
1
1
Locker L Cassette Side L
Fig. 2-5
1
1
Main Chassis · The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-A B2-1
DISASSEMBLY INSTRUCTIONS
2-6: LINK ASS'Y (Refer to Fig. 2-6) 1. Set the Link Ass'y to the Eject position. 2. Remove the (A) side of the Link Ass'y first, then remove the (B) side. 2-9: TENSION ASS'Y (Refer to Fig. 2-9-A) 1. Move the Inclined S Ass'y to the back side. 2. Unlock the support 1 and remove the S Reel Stopper. 3. Remove the Tension Spring. 4. Unlock the support 2 and remove the Tension Arm Ass'y. 5. Remove the Tension Adjust. 6. Unlock the 2 supports 3 and remove the Tension Band Ass'y. 7. Unlock the support 4 and remove the Tension Holder.
Tension Adjust (B) (A) Link Ass'y
Link Ass'y
3 3
Tension Band Ass'y
Main Chassis Main Chassis
Fig. 2-6
Tension Spring Tension Arm Ass'y
2-7: LOADING MOTOR ASS'Y (Refer to Fig. 2-7) 1. Remove the Link Lever. 2. Remove the Dumper Spring. 3. Remove the 2 screws 1. 4. Unlock the support 2 and remove the Loading Motor Ass'y. 5. Unlock the 2 supports 3 and remove the Deck PCB (BOT).
1
Loading Motor Ass'y S Reel Stopper
2 4 1
Tension Holder
Inclined S Ass'y
Fig. 2-9-A NOTE When you install the Tension Adjust, install as shown in Fig. 2-9-B. (Refer to Fig. 2-9-B)
Adjust the direction of the Marker to inside.
Dumper Spring
2
3
Main Chassis
1
Deck PCB (BOT) Link Lever
Fig. 2-9-B 2-10: T BRAKE ASS'Y (Refer to Fig. 2-10) 1. Remove the T Brake Spring. 2. Remove the T Brake Ass'y.
T Brake Ass'y
· Screw Torque: 5 ± 0.5kgf·cm
Fig. 2-7
2-8: SENSOR COVER L (Refer to Fig. 2-8) 1. Unlock the support 1 and remove the Sensor Cover L. 2. Unlock the 2 supports 2 and remove the Deck PCB (EOT).
T Brake Spring
Main Chassis
Sensor Cover L Deck PCB (EOT)
Fig. 2-10
1 2
2
Fig. 2-8
B2-2
DISASSEMBLY INSTRUCTIONS
2-11: S REEL/T REEL ASS'Y (Refer to Fig. 2-11) 1. Remove the Idler Ass'y. 2. Remove the S Reel and T Reel Ass'y. 3. Remove the 2 Polyslider Washers 1. NOTE 1. Take care not to damage the gears of the S Reel, T Reel Ass'y and Idler Ass'y. 2. The Polyslider Washer may be remained on the back of the reel. 3. Take care not to damage the shaft. 4. Do not touch the section "A" of S Reel and T Reel Ass'y. (Use gloves.) (Refer to Fig. 2-11) Do not adhere the stains on it. 5. When you install the reel, clean the shaft and oil it (KYODO OIL Slidas #150). (If you do not oil, noise may be heard in FF/REW mode.) 6. After installing the reel, adjust the height of the reel. (Refer to MECHANICAL ADJUSTMENT) NOTE 1. Do not touch the Pinch Roller. (Use gloves.) 2. When you install the Pinch Roller Ass'y, install as shown in the circle. (Refer to Fig. 2-12-B)
Fig. 2-12-B 2-13: A/C HEAD (Refer to Fig. 2-13-A) 1. Remove the screw 1. 2. Remove the A/C Head Base. 3. Remove the 3 screws 2. 4. Remove the A/C Head and A/C Head Spring. NOTE 1. Do not touch the A/C Head. (Use gloves.) 2. When you install the A/C Head Spring, install as shown in Fig. 2-13-B. (Refer to Fig. 2-13-B) 3. When you install the A/C Head, tighten the screw (1) first, then tighten the screw (2), finally tighten the screw (3).
(1) (3)
S Reel Idler Ass'y
(A)
T Reel Ass'y
1
(A)
1
2
2
Fig. 2-11 2-12: PINCH ROLLER ASS'Y/P5 ARM ASS'Y (Refer to Fig. 2-12-A) 1. Remove the P5 Spring. 2. Remove the screw 1. 3. Unlock the 2 supports 2 and remove the Cassette Opener. 4. Remove the Pinch Roller Ass'y, Pinch Roller Lever and P5 Arm Ass'y.
1
P5 Spring
2
(2) A/C Head
A/C Head Spring
1
A/C Head Base
Fig. 2-13-A
2
Cassette Opener
2
Spring Position
Pinch Roller Ass'y P5 Arm Ass'y
Fig. 2-13-B
2-14: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-14)
Pinch Roller Lever
1. Remove the screw 1. 2. Remove the FE Head.
1
FE Head
Main Chassis
· Screw Torque: 5 ± 0.5kgf·cm
Fig. 2-12-A
· The FE Head is not installed on the Video Cassette Player.
Fig. 2-14
B2-3
DISASSEMBLY INSTRUCTIONS
2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y (Refer to Fig. 2-15) 1. Unlock the support 1 and remove the AHC Ass'y. 2. Remove the 3 screws 2. 3. Remove the Cylinder Unit Ass'y. NOTE When you install the Cylinder Unit Ass'y, tighten the screws from (1) to (3) in order while pulling the Ass'y toward the left front direction.
2
(3) AHC Ass'y Pinch Roller Cam Link Lever Spacer E-Ring Main Cam
1
Middle Gear
2 3
Joint Gear P5 Cam
Fig. 2-17-A
Cylinder Unit Ass'y
2
(1)
1
NOTE When you install the Pinch Roller Cam, P5 Cam and Main Cam, align each marker. (Refer to Fig. 2-17-B)
Pinch Roller Cam
2
(2)
Check the hole of Main Chassis can be seen.
P5 Cam
· Screw Torque: 5 ± 0.5kgf·cm
Fig. 2-15
Marker Main Cam
2-16: CAPSTAN DD UNIT (Refer to Fig. 2-16) 1. Remove the Capstan Belt. 2. Remove the 3 screws 1. 3. Remove the Capstan DD Unit. Fig. 2-17-B
Capstan Belt Capstan DD Unit
2-18: CLUTCH ASS'Y (Refer to Fig. 2-18) 1. Remove the Polyslider Washer 1. 2. Remove the Clutch Ass'y, Ring Spring, Ring Clutch, Gear Clutch and Polyslider Washer 2. NOTE When you install the Clutch Ass'y, oil the shaft (KYODO OIL Slidas #150).
1 1
· Screw Torque: 5 ± 0.5kgf·cm
1 1
Fig. 2-16
Clutch Ass'y
2-17: MIDDLE GEAR/MAIN CAM (Refer to Fig. 2-17-A) 1. Remove the Polyslider Washer 1, then remove the Middle Gear. 2. Remove the E-Ring, then remove the Main Cam, Link Lever Spacer and P5 Cam. 3. Remove the Polyslider Washer 2, then remove the Pinch Roller Cam. 4. Remove the Polyslider Washer 3, then remove the Joint Gear.
Ring Spring Ring Clutch
Gear Clutch
2
App. 5mm
Fig. 2-18
B2-4
DISASSEMBLY INSTRUCTIONS
2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A) 1. Remove the E-Ring 1 and remove the Main Loading Gear. 2. Remove the Capstan Brake Spring. 3. Slide the Main Rod and remove the Capstan Brake Arm Ass'y. 4. Remove the Main Rod. 5. Remove the Tension Lever. 6. Unlock the 2 supports 2 and remove the Clutch Lever. 7. Remove the screw 3. 8. Remove the LED Reflector. 9. Remove the Loading Arm S Ass'y and Loading Arm T Ass'y. 10. Remove the Loading Gear S and Loading Gear T. 11. Remove the Loading Gear Spring.
Capstan Brake Spring Capstan Brake Arm Ass'y S-S Brake Arm
2-20: INCLINED S/T ASS'Y (Refer to Fig. 2-20) 1. Unlock the support 1 and remove the P4 Cover. 2. Remove the S-S Brake Spring. 3. Unlock the support 2 and remove the Loading Gear Holder. 4. Remove the S-S Brake Arm. 5. Remove the Inclined S. 6. Remove the Inclined T. 7. Remove the 2 screws 3, then remove the Guide Roller. NOTE Do not touch the roller of Guide Roller.
Loading Gear Holder
2
Guide Roller S-S Brake Spring
1 3
Main Loading Gear Main Rod Inclined S Guide Roller
3
Tension Lever Clutch Lever Loading Gear T Inclined T
1
P4 Cover
2 2
LED Reflector
3
Loading Gear Spring Loading Arm T Ass'y Loading Gear S Loading Gear Spring · Screw Torque: 0.7 ± 0.2kgf·cm
Fig. 2-20
Loading Arm S Ass'y
Fig. 2-19-A NOTE When you install the Loading Arm S Ass'y, Loading Arm T Ass'y and Main Loading Gear, align each marker. (Refer to Fig. 2-19-B)
Marker
Main Loading Gear
Marker
Loading Arm T Ass'y
Loading Arm S Ass'y
Fig. 2-19-B
B2-5
KEY TO ABBREVIATIONS
A A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASS'Y AT AUTO A/V B BGP BOT BPF BRAKE SOL BUFF B/W C C CASE CAP CARR CH CLK CLOCK (SY-SE) COMB CONV CPM CTL CYL CYL-M CYL SENS D DATA (SY-CE) dB DC DD Unit DEMOD DET DEV E E EF EMPH ENC ENV EOT EQ EXT F F FBC FE FF FG FL SW FM FSC FWD G GEN GND H H.P.F : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Audio/Control Automatic Color Control Audio Erase Automatic Frequency Control Automatic Fine Tuning Automatic Fine Tuning Detect Automatic Gain Control Amplifier Antenna Audio Playback Automatic Phase Control Assembly All Time Automatic Audio/Video Burst Gate Pulse Beginning of Tape Bandpass Filter Brake Solenoid Buffer Black and White Capacitance, Collector Cassette Capstan Carrier Channel Clock Clock (Syscon to Servo) Combination, Comb Filter Converter Capstan Motor Control Cylinder Cylinder-Motor Cylinder-Sensor Data (Syscon to Servo) Decibel Direct Current Direct Drive Motor Unit Demodulator Detector Deviation Emitter Emitter Follower Emphasis Encoder Envelope End of Tape Equalizer External Fuse Feed Back Clamp Full Erase Fast Forward, Flipflop Frequency Generator Front Loading Switch Frequency Modulation Frequency Sub Carrier Forward Generator Ground High Pass Filter I H.SW Hz IC IF IND INV KIL L LED LIMIT AMP LM, LDM LP L.P.F LUMI. M MAX MINI MIX MM MOD MPX MS SW NC NR OSC OPE PB PB CTL PB-C PB-Y PCB P. CON PD PG P-P R REC REC-C REC-Y REEL BRK REEL S REF REG REW REV, RVS RF RMC RY S. CLK S. COM S. DATA SEG SEL SENS SER SI SIF SO SOL SP STB SW : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Head Switch Hertz Integrated Circuit Intermediate Frequency Indicator Inverter Killer Left Light Emitting Diode Limiter Amplifier Loading Motor Long Play Low Pass Filter Luminance Motor Maximum Minimum Mixer, mixing Monostable Multivibrator Modulator, Modulation Multiplexer, Multiplex Mecha State Switch Non Connection Noise Reduction Oscillator Operation Playback Playback Control Playback-Chrominance Playback-Luminance Printed Circuit Board Power Control Phase Detector Pulse Generator Peak-to Peak Right Recording Recording-Chrominance Recording-Luminance Reel Brake Reel Sensor Reference Regulated, Regulator Rewind Reverse Radio Frequency Remote Control Relay Serial Clock Sensor Common Serial Data Segment Select, Selector Sensor Search Mode Serial Input Sound Intermediate Frequency Serial Output Solenoid Standard Play Serial Strobe Switch
K L
M
N O P
R
S
C1-1
KEY TO ABBREVIATIONS
S SYNC SYNC SEP T TR TRAC TRICK PB TP U UNREG V V VCO VIF VP V.PB VR V.REC VSF VSR VSS V-SYNC VT X X'TAL Y Y/C : : : : : : : : : : : : : : : : : : : : : Synchronization Sync Separator, Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse, Voltage Display Video Playback Variable Resistor Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source Vertical-Synchronization Voltage Tuning Crystal Luminance/Chrominance
C1-2
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. Method Press both PLAY button and CH UP button on the set for more than 2 seconds. Operations Initialization of the factory. NOTE: Do not use this for the normal servicing. PLAY/REC total hours are displayed on the FIP. Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS" (CONFIRMATION OF USING HOURS). Can be checked of the INITIAL DATA of MEMORY IC. Refer to the "NOTE FOR THE REPLACING OF MEMORY IC". Adjusting of the Tracking to the center position. Refer to the "MECHANICAL ADJUSTMENT" (GUIDE ROLLER) and "ELECTRICAL ADJUSTMENT" (PG SHIFTER).
While pressing the CH UP button on the set, press the FF button on the set for more than 2 seconds.
Press the ATR button on the remote control for more than 2 seconds during PLAY. While pressing the CH UP button on the set, press the STOP button on the set for more than 2 seconds. Press both CH UP button and CH DOWN button on the set for more than 2 seconds. Make the short circuit between the test point of SERVICE and the GND.
Adjust the PG SHIFTER automatically. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER).
CH Preset and Clock Setting are automatically set. (AUTO SET UP)
The EOT/BOT/Reel sensor do not work at this moment. Refer to the "PREPARATION FOR SERVICING"
C2-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage. Unless maintenance is properly carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. Time Parts Name Audio Control Head Full Erase Head (Recorder only) Capstan Belt Pinch Roller Capstan DD Unit Loading Motor Tension Band Capstan Shaft Tape Running Guide Post Cylinder Unit : Clean : Replace Replace when rolling becomes abnormal. Clean the Head Clean those parts in contact with the tape.
Clean the rubber, and parts which the rubber touches.
500 hours
1,000 hours
1,500 hours
2,000 hours
3,000 hours
Notes
CONFIRMATION OF USING HOURS
PLAY/REC total hours can be checked on the FIP. Total hours are displayed in 16 system of notation. 1. Turn on the POWER. 2. While pressing the CH UP button on the set, press the FF button on the set for more than 2 seconds. 3. Adjust the ADDRESS to "FD" by FF or REW button and read the DATA. (This DATA becomes the thousands digit and hundreds digit value of the following formula.) 4. Adjust the ADDRESS to "FE" by FF or REW button and read the DATA. (This DATA becomes the tens digit and ones digit value of the following formula.) 5. After the confirmation of using hours, turn off the power.
ADDRESS
DATA
(16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)
C3-1
NOTE FOR THE REPLACING OF MEMORY IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1.
ADDRESS CC CD CE CF D0 D1 D2 D3 D4 D5 DATA F1 44 24 88 92 45 00 02 09 03 ADDRESS D6 D7 D8 D9 DA DB DC DD DE DF DATA 80 00 7D 9F 02 0A 42 35 A3 56 ADDRESS E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 DATA 76 5E 08 F0 01 F3 6C 2B 21 15 ADDRESS EA EB EC ED EE EF F0 F1 F2 F3 DATA 51 5F 09 F0 05 F3 00 2F DF 41 ADDRESS F4 F5 F6 F7 F8 F9 FA FB FC DATA 41 83 3D 6B 0B 0C 04 3A 00
Table 1 1. Turn on the POWER. 2. While pressing the CH UP button on the set, press the FF button on the set for more than 2 seconds. 3. ADDRESS and DATA should appear as FIG 1.
ADDRESS
DATA
Fig. 1 4. ADDRESS is now selected and should "blink". Using the FF or REW button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached. 5. Press ENTER to select DATA. When DATA is selected, it will "blink". 6. Again, step through the DATA using FF or REW button until required DATA value has been selected. 7. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 8. Repeat steps 4 to 7 until all data has been checked. 9. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input. The unit will now have the correct DATA for the new MEMORY IC.
C4-1
SERVICING FIXTURES AND TOOLS
(For 2 head 1 speed model, 4 head model) VHS Alignment Tape JG001E (TTV-P2) JG001F (TTV-P1L) JG001U (VP1 S-X6 3 ) (For 2 head 2 speed model) VHS Alignment Tape JG001C (TTV-P2) JG001D (TTV-P1L) JG001V (VP 2 S-X6 3 )
JG002B Adapter JG002E Dial Torque Gauge (10~90gf·cm) JG002F (60~600gf·cm)
JG005 Post Adjustment Screwdriver Part No. SV-TG0-030-000 (small)
JG153 X Value Adjustment Screwdriver
JG022 Master Plane
JG024A Reel Disk Height Adjustment Jig
JG100A Torque Tape (VHT-063)
JG154 Cable Parts No. SJ-G15-400-000
Tentelometer
Part No. JG001E JG001F JG001U JG001C JG001D JG001V JG002B JG002E JG002F JG005 JG153 JG022/JG024A JG100A JG154
Remarks Monoscope, 6KHz (For 2 head 1 speed model, 4 head model) Color Bar, 1KHz (For 2 head 1 speed model, 4 head model) X Value Adjustment (For 2 head 1 speed model, 4 head model) Monoscope, 6KHz (For 2 head 2 speed model) Color Bar, 1KHz (For 2 head 2 speed model) X Value Adjustment (For 2 head 2 speed model) VSR Torque, Brake Torque (S Reel/T Reel Ass'y) Brake Torque (T Reel Ass'y) VSR Torque, Brake Torque (S Reel) Guide Roller Adjustment X Value Adjustment Reel Disk Height Adjustment Playback Torque, Back Tension Torque During Playback Used to connect the test point of SERVICE and GROUND
PREPARATION FOR SERVICING
How to use the Servicing Fixture 1. Short circuit between TP1001 and TP1002 with the cable JG154. (Refer to ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE) The EOT, BOT and Reel Sensor do not work at this moment. At that time, the STOP/EJECT button is available to insert and eject the Cassette Tape.
C5-1
VCR TEST TAPE INTERCHANGEABILITY TABLE
There are two types of the new alignment tape CH-1B (for NTSC) and CH-2 (for PAL). On each tape four signals (1) - (4) are recorded for the times and in the order shown below. (1) : 8min. ---> (2) : 2min. ---> (3) : 5min. ---> (4) : 5min. The TTV-MP1 (for M-PAL), TTV-MS1 (for MESECAM) and TTV-S1 (for SECAM) alignment tapes have the same contents as the previous tapes. Now in use TYPE Method Model Contents*1 Model Contents*1 New TYPE Application
TTV-N1
NTSC, Color, 1kHz, SP
CH-1B(2) NTSC, Stairsteps, 1kHz, SP
PB-Y Level/General electrical ADJ. Head ACE Height/Tilt ADJ.
TTV-N1E NTSC TTV-N2
NTSC, Color, 1kHz, EP
CH-1B(4) *2
NTSC, Color, 1kHz, EP
Switching position ADJ.
NTSC, Stairsteps, NTSC, Stairsteps, Head ACE Azimuth ADJ. CH-1B(1) 7kHz, SP 7kHz, SP
TTV-N12
(SCV-1998)
NTSC, Color, 1kHz, SP
CH-1B(4)
NTSC, Color, 1kHz, EP
FM envelope ADJ. X-Value ADJ.
TTV-N7A
NTSC, Stairsteps, NTSC, Color, No 1kHz, SP, HiFi CH-1B(3) sound SP, HiFi 400Hz 400Hz
HiFi Audio PB Level ADJ.
TTV-P1
PAL, Color, 1kHz, SP
CH-2(2) *3
PAL, Stairsteps, 1kHz, SP
Switching position ADJ. PB-Y Level/General electrical ADJ. Head ACE Height/Tilt ADJ.
TTV-P1L PAL TTV-P2
PAL, Color, 1kHz, LP
CH-2(4)
PAL, Color, 1kHz, LP
Switching position. (LP Model) FM Envelope ADJ. (LP Model) X-Value ADJ. (LP Model)
PAL, Stairsteps, 6kHz, SP
CH-2(1)
PAL, Stairsteps, 6kHz, SP
Head ACE Azimuth ADJ. FM Envelope ADJ. (SP Model) X-Value ADJ. (SP Model)
TTV-P7
PAL, Stairsteps, 1kHZ, SP, HiFi, 1kHz PAL, Color, 400Hz, SP, HiFi 1kHz
CH-2(3)
PAL, Color, No sound SP, HiFi 400Hz
HiFi Audio PB Level ADJ.
TTV-P16
No Changed.
FM Filter ADJ.
*1. Described in the order of color format. Video signal. Linear audio. Tape speed and Hi-Fi audio. *2. Use CH-1B (1) - (3) with models used exclusively in the SP mode. *3. Use CH-2 (3) and (4) when it is necessary to observe the chroma signal.
C6-1
MECHANICAL ADJUSTMENTS
1. CONFIRMATION AND ADJUSTMENT
Read the following NOTES before starting work. · Place an object which weighs between 450g~500g on the Cassette Tape to keep it steady when you want to make the tape run without the Cassette Holder. (Do not place an object which weighs over 500g.) · When you activate the deck without the Cassette Holder, short circuit between TP1001 and TP1002. (Refer to ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE) In this condition the BOT/EOT/Reel Sensor will not function. 1-1: CONFIRMATION AND ADJUSTMENT OF REEL DISK HEIGHT 1. Turn on the power and set to the STOP mode. 2. Set the master plane (JG022) and reel disk height adjustment jig (JG024A) on the mechanism framework, taking care not to scratch the drum, as shown in Fig. 11-A. 3. Confirm that "A" of the reel disk is lower than "B" of the reel disk height adjustment jig (JG024A) , and is higher than "C". If it is not enough height, adjust to 10(+0.2, -0) mm with the height adjustment washer. 4. Adjust the other reel in the same way.
Master Plane (JG022)
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION 1. Set to the PLAY mode. 2. Adjust the Tension Adjust until the edge of the Tension Arm is positioning within 0.5mm range from the standard line center of Main Chassis. After this adjustment, confirm that the cut position is located in "A" area as shown in Fig. 1-2-B. If it is located in "B" area, adjust again. 3. While turning the S Reel clockwise, confirm that the edge of the Tension Arm is located in the position described above.
Standard line of Main Chassis
Tension Arm 0.5mm (Adjusting range) Standard line center of Main Chassis Tension Adjust
Fig. 1-2-A
(A) Reel Disk Height Adjustment Jig (JG024A) Cut Position
(B) Tension Adjust
Fig. 1-2-B 1-3: CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK Fig. 1-1-A
Reel Disk Height Adjustment Jig (JG024A)
1. Load a video tape (E-180) recorded in standard speed mode. Set the unit to the PLAY mode. 2. Install the tentelometer as shown in Fig. 1-3. Confirm that the meter indicates 20 ± 2gf in the beginning of playback. · USING A CASSETTE TYPE TORQUE TAPE (JG100A) 1. After confirmation and adjustment of Tension Post position (Refer to item 1-2), load the cassette type torque tape (JG100A) and set to the PLAY mode. 2. Confirm that the right meter of the torque tape indicates 70~130gf·cm during playback in SP mode. 3. Confirm that the left meter of the torque tape indicates 25~40gf·cm during playback in SP mode.
Tentelometer
Reel Disk
Master Plane (JG022)
(B)
10(+0.2, -0)mm (C)
(A) Height Adjustment Washer 2.6x4.7xT0.13 2.6X4.7xT0.25
Video Tape
Fig. 1-1-B
P1 Post
Guide Roller
Fig. 1-3
D1-1
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE 1. Operate within 4~5 seconds after the reel disk begins to turn. 2. Install the Torque Gauge (JG002F) and Adapter (JG002B) on the S Reel. Set to the Rewind mode. (Refer to Fig.1-4) 3. Then, confirm that it indicates 120~180gf·cm. NOTE Install the Torque Gauge on the reel disk firmly. Press the REW button to turn the reel disk. 1-5: CONFIRMATION OF REEL BRAKE TORQUE (S Reel Brake) (Refer to Fig. 1-4) 1. Set to the STOP mode. 2. Move the Idler Ass'y from the S Reel. 3. Install the Torque Gauge (JG002F) and Adapter (JG002B) on the S Reel. Turn the Torque Gauge (JG002F) clockwise. 4. Then, confirm that it indicates 70~100gf·cm. (T Reel Brake) (Refer to Fig. 1-4) 1. Set to the STOP mode. 2. Move the Idler Ass'y from the T Reel Ass'y. 3. Install the Torque Gauge (JG002E) and Adapter (JG002B) on the T reel. Turn the Torque Gauge (JG002E) counterclockwise. 4. Then, confirm that it indicates 35~60gf·cm.
Torque Gauge/Adapter (JG002F/JG002B)
2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM
Tape Running Mechanism is adjusted precisely at the factory. Adjustment is not necessary as usual. When you replace the parts of the tape running mechanism because of long term usage or failure, the confirmation and adjustment are necessary. 2-1: GUIDE ROLLER 1. Playback the VHS Alignment Tape (JG001C or JG001E). (Refer to SERVICING FIXTURE AND TOOLS) 2. Connect CH-1 of the oscilloscope to TP4002 (Envelope) and CH-2 to TP4001 (SW Pulse). 3. Press and hold the TRACKING-AUTO button on the remote control more than 2 seconds to set tracking to center. 4. Trigger with SW Pulse and observe the envelope. (Refer to Fig. 2-1-A) 5. When observing the envelope, adjust the Adjusting Driver (JG005) slightly until the envelope will be flat. Even if you press the Tracking Button, adjust so that flatness is not moved so much. 6. Adjust so that the A : B ratio is better than 3 : 2 as shown in Fig. 2-1-B, even if you press the Tracking Button to move the envelope (The envelope waveform will begin to decrease when you press the Tracking Button). 7. Adjust the PG shifter during playback. (Refer to the ELECTRICAL ADJUSTMENTS) NOTE After adjustment, confirm and adjust A/C head. (Refer to item 2-2)
Torque Gauge/Adapter (JG002E/JG002B)
CH-1 Envelope (TP4002)
CH-1 Track CH-2 SW Pulse (TP4001)
CH-2 Track
S Reel Envelope
T Reel Ass'y
Fig. 1-4
(1) CH-3 Audio (2)
NOTE If the torque is out of the range, replace the following parts. Check item 1-4 1-5 Replacement Part Idler Ass'y/Clutch Ass'y T Brake Spring/Tension Spring
Max
Fig. 2-1-A
Entrance
Exit
A
B
Max
A:B=3:2
Fig. 2-1-B
D1-2
MECHANICAL ADJUSTMENTS
2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ CONTROL HEAD When the Tape Running Mechanism does not work well, adjust the following items. 1. Playback the VHS Alignment Tape (JG001C or JG001E). (Refer to SERVICING FIXTURE AND TOOLS) 2. Confirm that the reflected picture of stamp mark is appeared on the tape prior to P4 Post as shown in Fig. 22-A. a) When the reflected picture is distorted, turn the screw 1 clockwise until the distortion is disappeared. b) When the reflected picture is not distorted, turn the screw 1 counterclockwise until little distortion is appeared, then adjust the a). 3. Turn the screw 2 to set the audio level to maximum. 4. Confirm that the bottom of the Audio/ Control Head and the bottom of the tape is shown in Fig. 2-2-C. c) When the height is not correct, turn the screw 3 to adjust the height. Then, adjust the 1~3 again.
Audio/Control Head Reflected picture of Stamp Mark P4 Post
2-3: TAPE RUNNING ADJUSTMENT (X VALUE ADJUSTMENT) 1. Confirm and adjust the height of the Reel Disk. (Refer to item 1-1) 2. Confirm and adjust the position of the Tension Post. (Refer to item 1-2) 3. Adjust the Guide Roller. (Refer to item 2-1) 4. Confirm and adjust the Audio/Control Head. (Refer to item 2-2) 5. Connect CH-1 of the oscilloscope to TP4001, CH-2 to TP4002 and CH-3 to HOT side of Audio Out Jack. 6. Playback the VHS Alignment Tape (JG001U or JG001V). (Refer to SERVICING FIXTURE AND TOOLS) 7. Press and hold the TRACKING-AUTO button on the remote control more than 2 seconds to set tracking to center. 8. Set the X Value adjustment driver (JG153) to the 4 of Fig. 2-2-B. Adjust X value so that the envelope waveform output becomes maximum. Check if the relation between Audio and Envelope waveform becomes (1) or (2) of Fig. 2-1-A.
Stamp Mark
Fig. 2-2-A
Audio/Control Head
3
1
2 4
Fig. 2-2-B
Audio/Control Head Tape
0.25±0.05mm
Fig. 2-2-C
D1-3
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
5
6
4
3 7 2 1 8
12
11
10
9
1. Tension Adjust 7. P4 Post 2. Tension Arm 8. T Brake Spring 3. Guide Roller 9. T Reel Ass'y 4. P1 Post 10. Idler Ass'y 5. Audio/Control Head 11. S-S Brake Spring 6. X value adjustment driver hole 12. S Reel
D1-4
ELECTRICAL ADJUSTMENTS
Read and perform this adjustment when repairing the circuits or replacing electrical parts or PCB assemblies.
1. BASIC ADJUSTMENT
CAUTION When replacing IC's or transistors, use only specified silicon grease (G-746). (To prevent the damage to IC's and transistors.) 1-1: PG SHIFTER CONDITIONS MODE-PLAYBACK Input Signal-Alignment Tape (JG001E) INSTRUCTIONS 1. Connect CH-1 on the oscilloscope to TP4001 and CH-2 to pin 19 of J4501. 2. Playback the alignment tape. (JG001E) 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. While pressing the CH UP button on the set, press the STOP button on the set for more than 2 seconds. If the indicator ATR disappear's, the adjustment is finished. (Refer to Fig. 1-1-A, B)
CH-2
6.5H
CH-1
Fig. 1-1-A
CH-2
CH-1
6.5H
Fig. 1-1-B
D2-1
TROUBLESHOOTING GUIDE
POWER DOES NOT TURN ON
Does DISPLAY light ?
No
Is F501 broken ?
Yes
Replace F501.
Yes
No
Is the voltage at collector of Q507 about 5.6V ? No Check the peripheral circuit to pin 14 of T501.
Yes
Check IC1002.
Is the voltage at pin 20 of IC1002 about 5V ? Yes
No
Check IC1002.
Is the voltage at base of Q502 about 5V ? Yes
No
Replace Q510.
Replace Q502.
E-1
TROUBLESHOOTING GUIDE
POWER SHUTS OFF
Insert a cassette and press PLAY button.
Does it Power off in about 3 seconds ? No
Yes
Check TAPE LOADING, LOADING BELT, DD MOTOR and CYLINDER MOTOR.
Does it Power off in about 6 seconds ? No
Yes
Check REEL SENSOR and BELT CAPSTAN.
Check POWER BLOCK.
E-2
TROUBLESHOOTING GUIDE
CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING
Is the voltage at pin 2 of CP1002 about DC11.25V ? Yes
No
Check AT 12.6V line of POWER BLOCK.
In playback, is the voltage at pin 5 of CP1002 about DC1.52V ? Yes
No
Check IC1002.
Replace CYLINDER MOTOR.
E-3
TROUBLESHOOTING GUIDE
AUDIO SHAKES
Yes Is AUDIO HEAD scratched ?
Replace AUDIO HEAD.
No
Is input level at pin 85 of IC1002 about 0.4Vp-p ? Yes
No
Replace CAPSTAN DD UNIT.
In playback, is the voltage at pin 4 of CP1003 2.6V ?
No Check IC1002.
Yes
Check AUDIO BLOCK.
E-4
TROUBLESHOOTING GUIDE
CASSETTE TAPE IS NOT ACCEPTED
Does WORM GEAR on CASSETTE LOADING BLOCK activate ?
No
Check FRONT LOADING GEARS and LOCKER.
Yes
When a cassette is inserted, is the voltage at pin 4 of IC1002 0V ?
No
Check LED and PHOTO SENSOR on SYSCON PCB.
Yes
When a cassette is inserted, Yes is the voltage between pins 3 and 4 of CP1004 about 9.8V ?
Replace LOADING MOTOR.
No
When a cassette is inserted, is the voltage at pin 47 of IC1002 5V ?
No
Replace IC1002.
Yes
Check circuit of CASSETTE LOADING BLOCK.
E-5
TROUBLESHOOTING GUIDE
WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY
Does another cassette go down ? No
Yes
Defective CASSETTE or CASSETTE LOADING BLOCK.
When cassette is inserted, is the voltage at pins 4 and 3 of IC1002 0V ?
No
Check FRONT LOADING GEARS.
Yes
Check IC1002.
E-6
TROUBLESHOOTING GUIDE
FF/REW DO NOT WORK
Is the voltage changing at pin 11 of IC1002 when you press FF/REW ? Yes
No
Check pins 9 and 10 of IC1002 lines.
Check DECK MECHANISM.
E-7
TROUBLESHOOTING GUIDE
TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY
Does CYLINDER rotate ? Yes
No
Is the voltage at pin 2 of CP1002 AT 12.6V ? Yes
No
Check Power circuit.
In playback, is the voltage at pin 5 of CP1002 1.54V ?
No
Yes
Replace CYLINDER UNIT.
No Does TP4001 feed HEAD SWITCHING PULSE signal ? Yes No Does PG PULSE signal appear at pin 86 of IC1002? Yes
Check REEL SENSOR.
Replace IC1002.
E-8
TROUBLESHOOTING GUIDE
PLAYBACK PICTURE JITTERS HORIZONTALLY
Is FG output level at pin 3 of CP1002 about 4.0Vp-p? Yes
No
Replace CYLINDER MOTOR.
Is the voltage at pin 5 of CP1002 1.5V ? Yes
No
Replace IC1002.
Replace CYLINDER MOTOR.
PLAYBACK PICTURE SHAKES
Is FG output level at pin 3 of CP1002 about 4.0Vp-p?
No
Replace CYLINDER MOTOR.
Yes
Is the voltage at pin 5 of CP1002 1.5V? Yes
No
Replace IC1002.
Replace CYLINDER MOTOR.
E-9
TROUBLESHOOTING GUIDE
AUTO TRACKING DOES NOT OPERATE
By manual tracking, does the DC level at pin 84 of IC4001 change ?
No
Check CYLINDER UNIT.
Yes
In auto tracking, is the voltage at pin 6 of IC1002 more than DC 1V ?
No
Does the CTL PULSE (about 4.6Vp-p) appear at pin 97 of IC1002?
No
Check CONTROL HEAD.
Yes
Yes
Replace IC1002.
E-10
TROUBLESHOOTING GUIDE
WHEN IN PLAYBACK, FAST FORWARD OR REWIND MODE IS ACTIVATED, UNIT STOPS IMMEDIATELY
Does CAPSTAN DD MOTOR rotate ? Yes
No
Refer to section "CAPSTAN DD MOTOR NOT ROTATING".
Does the REEL SENSOR PULSE signal appear at pins 79 and 80 IC1002 ? Yes
No
Check Q1001 and Q1002.
Replace IC1002.
E-11
TROUBLESHOOTING GUIDE
PLAYBACK PICTURE JITTERS VERTICALLY
No
Does tracking noise appear in the picture ? Yes
By adjusting the manual tracking UP/DOWN buttons, will the noise disappear in the picture ?
No
Check P/B ENVELOPE.
Yes
Are GUIDE POSTS the right height ? Yes
No
Adjust GUIDE POST height.
Is PG SHIFTER adjustment 6.5H ? Yes
No
Adjust PG SHIFTER.
Yes Is PB-Y waveform normal ?
Replace IC1002.
No
Check PB-Y circuit.
E-12
TROUBLESHOOTING GUIDE
NO PLAYBACK PICTURE
Is E-E appearing on the Monitor TV ? Yes
No
Is the voltage at pins12, 36, 61 and 90, 96 of IC4001 5V ? Yes
No
Check Power circuit.
Check VIDEO OUT LINE and IC4001.
Is there FM signal at pins 78 and 79 of IC4001 ? Yes
No
Check connection of the CYLINDER.
Is there VIDEO signal at pin 52 of IC4001 ? Yes
No Replace IC4001.
Check IC4801
E-13
TROUBLESHOOTING GUIDE
NO COLOR DURING PLAYBACK
Does COMPOSITE signal appear at pin 52 of IC4001? Yes
No
Replace IC4001.
Check Q4802 circuit.
E-14
TROUBLESHOOTING GUIDE
PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)
Is FM signal at pin 79 of IC4001 270mVp-p ? Yes
No
Check CYLINDER UNIT.
Is FM signal at pin6 of IC1002 more than 1V ? Yes
No
Perform the interchangeable adjustment of DECK.
Is VIDEO output at the emitter of Q4802 2Vp-p, and are there any noises ? Yes
No
Check IC4001 and Q4802.
Replace J4501.
E-15
TROUBLESHOOTING GUIDE
NO COLOR DURING SELF RECORDING AND PLAYBACK
Does VIDEO signal appear at pin 31 of IC4001 ? Yes
No
Replace J4501. Check VIDEO input circuit.
Does color signal at pin 52 of IC4001 ? Yes
No Check IC4001.
Check Q4802 EMITTER.
E-16
TROUBLESHOOTING GUIDE
NO NORMAL AUDIO ON PLAYBACK
Does audio appear on E-E ? Yes
No
Refer to section "NO E-E".
Does AUDIO signal appear at No pin 2 of IC4001 6mVp-p ? Yes
Check C4039 and peripheral circuit.
Does AUDIO signal appear at pin 11 of IC4001 1Vp-p ? Yes Check AUDIO HEAD for debris or stains. Check the connector from AUDIO HEAD is fully inserted into CP4002. Replace IC4001.
No
Replace IC4001.
E-17
TROUBLESHOOTING GUIDE
CAPSTAN DD MOTOR NOT ROTATING
In playback is the voltage at pin 5 of CP1003 12V ? Yes
No
Check POWER circuit.
Is the voltage at pin 8 of CP1003 5V ? Yes
No
In playback, check the voltage at pin 3 of CP1003 is 2V or at pin 62 of IC1002 is 2.5V ? Yes
No
Replace IC1002.
In playback, is the voltage at pin 4 of CP1003 2.5V ? Yes
No
Check pins 77, 78 of IC1002 and peripheral circuit.
Replace IC1002. Does DD MOTOR rotate now? If not, replace DD MOTOR.
E-18
TROUBLESHOOTING GUIDE
AUDIO CAN NOT BE RECORDED
Is BIAS level O.K at L4005 ? Yes
No
Is the voltage at pin 2 of L4005 5.8V ? Yes
No
Check POWER circuit.
Is the voltage at pin 29 of IC1002 about 5V ? Yes
No
Replace IC1002.
L4005 is broken or shorted. Is there AUDIO signal at pin 5 of CP4002 ? Yes No Check the circuit between pin4 of IC4001 to pin 5 of CP4002.
Is there AUDIO signal at pin 11 of IC4001 ? Yes
No Replace IC4001.
Check the lead wire and connector to A/C HEAD.
E-19
TROUBLESHOOTING GUIDE
CASSETTE IN AND DOWN, UNIT HAS NO FUNCTIONS
Does mode indicator appear in Display ? Yes
No
Check LOADING MOTOR and the peripheral parts.
Does VCR operate with the remote control ? Yes
No
Check IC1002.
Check Operation PCB.
E-20
TROUBLESHOOTING GUIDE
RECORDING MECHANISM WORKS,BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER
Does VIDEO signal appear at pin 31 of IC4001 ? Yes
No
Check the circuit from VIDEO input jack to IC4001, from Tuner Pack to IC4001.
No Does the VIDEO signal appear at pin 52 of IC4001 ? Yes
Replace IC4001.
Check CYLINDER UNIT .
E-21
TROUBLESHOOTING GUIDE
NO E-E(VIDEO AND AUDIO FROM TUNER)
Are the plugs connected to the VIDEO/AUDIO input jacks ? No
Yes
Disconnect the plugs from the VIDEO/AUDIO input jacks.
Do the voltages appear at each terminal PB(5V), TU(32V) and B+(5V) of TU6001 ? Yes
No
Check Power Block.
CHECK AUDIO
CHECK VIDEO
Does AUDIO signal appear at pin 21 of TU6001 ? Yes
No No
Does VIDEO signal appear at pin 24 of TU6001 ? Yes
Replace TU6001.
Does AUDIO signal appear at pin 1 and 2 of IC6601 ? Yes
No
Is there VIDEO waveform at emitter of Q6003 ? Yes
No
Replace Q6003.
Check IC5501.
Is there VIDEO waveform at pin 52 of IC4001 ? Yes
No
Check IC4001.
Check IC6601. Check IC4501.
E-22
TROUBLESHOOTING GUIDE
NO E-E AUDIO (MONO)
Is the voltage at pin 40 of IC5501 5V ? Yes
No
Check POWER BLOCK.
Is the voltage at pin 34 of IC5501 12V ? Yes
No
Check POWER BLOCK.
Does AUDIO signal appear at pins 6 and 7 of IC5501 ? Yes
No
Check J4501 and peripheral circuit.
Does AUDIO signal appear at pin 21 of IC5501 ? Yes
No
Replace IC5501.
Does AUDIO signal appear at pin 22 of IC5501 ? Yes
No
Check IC4001.
Does AUDIO signal appear at pins 15 and 18 of IC5501 ? Yes
No
Replace IC5501.
Check J4501 and peripheral circuit.
E-23
TROUBLESHOOTING GUIDE
NO E-E AUDIO (STEREO)
Does audio appear on E-E ? Yes
No
Refer to section " NO E-E AUDIO (MONO) ".
Check the circuit between IC5501 to J4501.
E-24
TROUBLESHOOTING GUIDE
NO TUNER AUDIO (MONO)
Does audio appear on E-E ? Yes
No
Refer to section " NO E-E AUDIO (MONO) ".
Does AUDIO signal appear at pin 38 of IC6601 ? Yes
No
Check pin 21TU6001.
Does AUDIO signal appear at pins 1 and 2 of IC6601 ? Yes
No
Replace IC6601.
Does AUDIO signal appear at pins 15 and 18 of IC5501 ? Yes
No
Replace IC5501.
Check J4501 and peripheral circuit.
E-25
TROUBLESHOOTING GUIDE
NO TUNER AUDIO (STEREO)
Does signal appear at pin 25 of IC6601 ? Yes
No
Reploce TU6001.
Refer to section "NO TUNER AUDIO (MONO)".
E-26
TROUBLESHOOTING GUIDE
NO PB AUDIO (Hi-Fi)
Does audio appear on E-E ? Yes
No
Refer to section " NO E-E AUDIO (STEREO) ".
Does audio appear on PB ? Yes
No
Refer to section " NO NORMAL AUDIO ON PLAYBACK ".
Is the voltage at pin 44 of IC5501 high ? Yes
No
Replace IC1002.
Replace IC5501.
E-27
TROUBLESHOOTING GUIDE
Hi-Fi AUDIO CANNOT BE RECORDED
Does audio appear on E-E ? Yes
No
Refer to section " NO E-E AUDIO (MONO) ".
Is the voltage at pin 44 of IC5501 hight ? Yes
No
Replace IC1002.
Replace IC5501.
E-28
IC DESCRIPTIONS
OEC7035B Pin No. Pin Name 1 AFT-SC 2 AGC-DET 3 EOT 4 BOT 5 RF SW/A-ENV 6 V-ENV 7 KEY-A 8 CH UP 9 MSSW A 10 MSSW B 11 CAP FWD 12 CAP LIMIT 13 D.V SYNC 14 REMOCON 15 NC 16 NC 17 NC 18 V.HEAD SW 19 A.HEAD SW 20 POWER ON A H 21 NC 22 SENS LED 23 NC 24 NC 25 FF/REW L 26 CAP MID-H 27 CAP HI-H 28 HEATER SW 29 NA REC-H 30 VV-H 31 SERVICE 1 32 SP STILL H 33 NC 34 NC 35 NC 36 CLKSEL 37 VCC 38 X IN 39 X OUT 40 VSS 41 XC IN 42 XC OUT 43 RESET 44 NC 45 NC 46 I/O CTL 47 LDM FWD 48 LDM REV 49 NC 50 RGB ON-H I/O I I I I I I I I I I O O O I O O I O O O O O O O O O O O O O I O O I O I O I O O O O O O Description AFT S Curve input for tuner. Input of CASS DOWN, TAB switch and setting of service mode. Tape end sensor input signal. Tape start sensor input signal. Ground. Input terminal of video RF envelope. Key A input. Channel up switch. Input terminal (A) of mecha state sensor. Input terminal (B) of mecha state sensor. Capstan forward and backward command. Switch the maximum output current of the Capstan Motor. Imitative V-SYNC signal output during the special playback. Input the infrared remote control. Not used. Not used. Not used. Output terminal of Head Switch. Not used. For control the user power switch ON/OFF. Not used. Mecha state sensor LED. Not used. Not used. Output "L" when fast forwarding or rewinding. Power of Capstan Motor select. Power of Capstan Motor select. -30V ON/OFF Control. Control the Bias OSC for audio head. Not used. Setting of service mode 1. Not used. Not used. Not used. Not used. 5V. 5V. Connect the main crystal(12 MHz). Connect the main crystal(12 MHz). Ground. Subclock pulse(32.768 KHz). Subclock pulse(32.768 KHz). Input terminal of reset signal. Not used. Not used. Control the Audio/Video input/output. Output signal to control the rotation direction of the Loading Motor. Output signal to control the rotation direction of the Loading Motor. Not used. If the EE/VV is "EE" or TV/VCR is "TV" and PELI CTRL-L is "L", O H Output will appear. And the others, "L" Output will appear.
F-1
IC DESCRIPTIONS
OEC7035B Pin No. Pin Name 51 POWER ON L 52 NC 53 ONE TOUCH PB 54 PELI CTL 55 NC 56 NC 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 A.MUTE-H T.A.MUTE-H TAB SW NC SD CAP ON CG-CS FLD-CS FLD-D OUT FLD-D IN FLD-CLK CG-DATA NC CG-CLK IIC-CLK IIC-SDA 32K MONI Hi-Fi MUTE V-REC-ST PICTURE CTL CAP-CTL CYL-CTL REEL-S REEL-T NC P.FAIL NC C SYNC CFG DPG DFG AMP VSS AMP V.OUT AMP V.IN CTLCTL+ CTL SW OUT CTL AMP IN AMP C CTL VSS CTL AMP OUT AMP VCC A VCC NC I/O O O O I O O O O I I O O O I O I O O I O O I/O O O O O O O I I I I I I I O I I/O I/O O I I/O I Description For control the user power switch ON/OFF. Not used. Control the LED for the ONE TOUCH PLAYBACK. Control the 21 pin IC output. Not used. Not used. This pin output the HIGH to mute the sound at the switching point between E-E and V-V during the special playback. Not used. Input of TAB SW. Not used. Not used. Control the Capstan Motor rotation direction. Output the CS signal of character generator IC. User switch for the auto start ON/OFF. Timing output of data transmission and receiving with FIP driver. Receiving of Key switch data from FIP driver. Indication data and mode transmission to FIP driver. Output the Data of OSD. Not used. Output the Clock of OSD. Clock output to Hi-Fi IC. DATA input/output to Hi-Fi IC. Output 32.768KHz monitor(16.384KHz output) to check the clock. Control the Hi-Fi IC. Control the Head Amp for video and Hi-Fi audio. Output pulse to control the Y/C IC for sharpness. Output servo of the capstan motor. Output "L" when fast forwarding or rewinding. Input terminal of reel sensor supply. Input terminal of reel sensor take up. Not used. Input for the detection of power interruption. Not used. Input Compound synchronized signal. Input terminal for Capstan FG signal detection. Input terminal for Drum PG signal detection. Input terminal for Drum FG signal detection. Ground. Output the Analogue Amp standard voltage. Input the Analogue Amp standard voltage. Input and output terminal of CTL AMP. Input and output terminal of CTL AMP. Output terminal of CTL AMP positive. Input terminal of CTL AMP. Ground. Connect the VSS. Output terminal of CTL AMP circuit. 5V. Voltage terminal for general circuit. Not used.
F-2
SERVO TIMING CHART
IC1002 (OEC7035B) DPG *6 PIN DFG *7 PIN
H. SW. P !8 PIN V-SYNC (E-E) *4 PIN REC CTL (REC) (7 PIN V-SYNC (TRICK PB) !3 PIN
CH 1
CH 2
· WAVEFORM CHANGES DEPENDED ON THE TAPE SPEED
G-1
SYSTEM SWITCH MODE
LOADING DIRECTION (FWD)
EJECTION
LIGHT RECEIVING
FWD : CAPSTAN FWD ROTATING DIRECTION RVS : CAPSTAN RVS ROTATING DIRECTION
UNLOADING STP3 VSR
PB
SLOW
: SETTING SPEED TO SERVO
: MECHANICAL MOVEMENT AND CAPSTAN ROTATING : MECHANICAL MOVEMENT (NO CAPSTAN ROTATING) F. SLOW PB/STP STP2 FF/REW
EOT BOT MSSEN A MSSEN B
LIGHT GUARD LIGHT RECEIVING LIGHT GUARD LIGHT RECEIVING(H) LIGHT GUARD (L) LIGHT RECEIVING LIGHT GUARD
LOADING ARM HEAD CLEANING PINCH ROLLER CLUTCH DIRECT CONNECTION
T BRAKE S BRAKE
CASSETTE DOWN TAPE IN
FWD
TAPE LOADING (WHEN MSSEN A IS CHANGED FROM LIGHT GUARD TO LIGHT RECEIVING, CASSETTE IN WILL BE DETECTED)
FWD
RVS
(VCP) POWER OFF (VCR)
PB/STP
STP3
FWD
STP FF/FWD FF/REW FF/REW PB/STP
FF/REW
STP
POWER ON
PB
STP3
PB
FWD PB
G-2
Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM
X4001 4.433619MHz
79
78
75
73
60
58
55
54
52
CP4001
1 2 3 4 5 6 7 8 9 EP/LP-CH2(L) EP/LP COM EP/LP-CH1(R) SP-CH2(L) SP-COM SP-CH1(R) HF2(L) FH COM HF1(R) HF1 HF COM HF2 IIC CLK
62 63 81 84
Q4005 Q4006 Q4007
91 92 93
H.AMP
CYL
94
86 87 88 89
P 2MLPF ACC R TRAP HPF R CTL TRAP fh HPF P P R DELAY
VCA
CCD LPF C.K
6db AMP C SQUELCH
6db AMP
CLEAR SYNC
CLPF R MAIN CONV1 P R
CLPF MAIN CONV2 R P N P B.D
P LPF
SQUELCH
TUNER/HI-FI/ 21PIN/OSD/ VPS/NICAM
REC MUTE
MIX LEVELADJ B.E C.K
P BPF R
FBC VIDEO ALC
SYSCON/ SERVO/ TIMER
IIC DATA V.H_SW ENV.DET NA REC-H
ENV DET
P HPF R 1M HPF SQPB D LIM 7M LPM DEMO SLPF 629 TRAP SQPB FM AGC P.EQ S DL G EQ NL EMPH NL DE EMPH R P C CCD
46
35
CP4002 1 AE HEAD(+) AE HEAD(-) AUDIO REC AUDIO PB 2 5 6
PB SW
42
A/C HEAD
FBC ALC
Y CCD
39
2
PRE AMP
P
VCA
LAG LEAD LPF FM MOD MAIN EMPH CARRIER OFFSET W.C/DC
F/E HEAD
CP4003 1 FE HEAD(GND)
2 FE HEAD(HOT)
R
P MAIN DE-EMPH YLPF
R P
Y APA
FO/DEV ADJ
Q4004 OSC
L4005
1 6 5 3 4 69 9 11
LINE AMP
4
REC EQ
S-DET
D.E N.C
R P CLAMP CLAMP YNR
R
VIDEO AGC
Q4003
NORMAL A. REC ST SW
ATT
2FSC
TUNER/HI-FI/ 21PIN/OSD/ VPS/NICAM
NORMAL A IN NORMAL A OUT SWD VIDEO IN EE/VV V OUT
LPF
18
Y/C/AUDIO/CCD/H.AMP IC4001 HA118217F
19
21
23
24
26
31
RECORD LUMINANCE SIGNAL PLAYBACK LUMINANCE SIGNAL RECORD COLOR SIGNAL PLAYBACK COLOR SIGNAL TUNER VIDEO SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL (PB)
I-1
SYSTEM CONTROL/SERVO/TIMER BLOCK DIAGRAM
SYSCON/SERVO/TIMER IC1002 OEC7035B HEATER SW
28 HEATER SW 82 P.FAIL 20 POWER ON-H A 27 CAP HI-H
LOADING MOTOR DRIVER IC1001 BA6955AN
2
4
5
7
POWER
POWER FAIL POWER ON-H CAP HI-H
BOT
4
CP1004 BOT
LDM LDM + REMOCON KEY-A CH.UP_SW OTP
5 6
2 3 4
DECk
LDM FWD 47 LDM RVS 48
TUNER/HIFI/ 21PIN/OSD/ VPS/NICAM
REMOCON 14
HIFI ENV.DET IC1004 RE5VS31A SYSTEM RESET
1
5
A.ENV
KEY-A
7 8
OPERATION
43 RESET 79 REEL-S 80
CH UP OTP 53 IIC DATA 72 IIC CLK 71
REEL-T
EEP ROM IC1099 M24C04-BN6
IIC DATA IIC CLK
P.CON 5V
REEL SENSOR Q1002
2 1 2
X1002 32.768KHz
41 XC IN
1
REEL SENSOR Q1001
42 XC OUT 4 3 4 3 X1001 12MHz 39 X OUT 38 X IN
V.ENV.
6
ENV.DET V.H.SW NA REC-H IIC DATA IIC CLK
Y/C/AUDIO/ HAED AMP
V.H.SW 18 NA REC-H 29
CG CLK 70
Q1007
CG CLK
FF/REW SW
Q1006
25 FF/REW-L
CG CS 63 CG DATA 68 PICTURE_CTL
76
CG CS
CG DATA
TUNER/HIFI/ 21PIN/OSD/VPS/ NICAM
FF/REW SW
97 CTL AMP OUT 93 CTL SW OUT Q1003
CYL CTL 78 DFG 87 DPG 86 CFG 85
22 SENS LED
Q1008 CYL VCO SW
PICTURE_CTL-L CP1002 CYL DRIVE 5
CYL FG CYL B+ CYL PG
3 2 1
MICRO MOTOR
LED SW
Q1005
AT12.6V P.CON 5V
D1001
MOS SEN A
Q1004
9
MS SW A
Q1009
CYL SW
10 MS SW B 3
DECK
CP1001 EOT 1
MS SEN B
CAP LIMIT
12
CP1003 I LIMIT CTL VCO(12V) FG CAP.M F/R
3 4 5 6 7
POWER CAPSTAN DD UNIT
EOT
CAP CTL 77 CAP FWD 11
CAPSTAN AFC SIGNAL CYLINDER APC SIGNAL CYLINDER AFC SIGNAL
CAP_VCO
I-2
TUNER/HIFI/21PIN/OSD/VPS/NICAM BLOCK DIAGRAM
HIFI IC5501 TDA9605H
RECORD LUMINANCE SIGNAL PLAYBACK LUMINANCE SIGNAL RECORD COLOR SIGNAL PLAYBACK COLOR SIGNAL TUNER VIDEO SIGNAL AUDIO SIGNAL (REC) AUDIO SIGNAL (PB)
BPF 1.3M/1.4M
35 37 36
PPL 1.3M/1.4M CCO
LPF NOISE REDUCTION 3
J4204
2 3
HF LPF
J4501
1 2 3 6 8 19 22 23 24 27 29 40 41
BPF 1.7M/1.8M
HF LPF LPF
PPL 1.7M/1.8M CCO INPUT SWITCH
2
7 6 9 8
NOISE REDUCTION
21
NORMAL SELECT 19 OUTPUT SELECT DECODER SELECT 20
20
22
44
I C DATA DECODER
42 43
2
OUTPUT LINE SELECT 13
16
17
HF1
HF COM
HF2
Y/C/AUDIO/ HEAD AMP
2 1
NORMAL A IN NORMAL A OUT SWD VIDEO IN EE/VV V.OUT 2FSC
Q4801
Q4802
NICAM IC6601 TDA9874H
38 25
23 BUFFER 6MB AMP C B A C
21 BUFFER 6MB AMP B A B
20
A/V SW IC IC4501 LA7158M
BUFFER 6MB AMP
TU6001
2 6
BUFFER
21 22 Q6003
DC CLAMP
A
BUFFER
24 5
3
Q4501
OSD IC4801 LC74775M
2
24
21
19
SCRANBLE
11
10
9
5
27
CLAMP CLAMP 14 16
CLAMP
18
CLAMP 19
4
11 12
HIFI ENV.DET CG DATA
SYSCON/ SERVO/TIMER
CG CLK CG CS IIC CLK IIC DATA PERI CTL-L
I-3
OPERATION BLOCK DIAGRAM
V651 7-MT-201G
23
17
14
4
26 25
2
1
HEATER_DC + HEATER_DC -
POWER
CH.UP
CH.UP_SW POWER
IC651 BU2979K
14
17 19
21
41
31
Q601 OTPB SW OTP D601
OS651 1 REMOCON KEY-A
FIP DRIVER
STILL/PAUSE OTPB
CH.DOWN
SYSCON/ SERVO/TIMER
STOP/EJECT
REC/OTR
FF/CUE
PLAY
REW/REV
POWER BLOCK DIAGRAM
D525
CAP VCO
IC502 NJM431L Q508 Q509
CAP VCO SW
VOLTAGE CTL. 1 Q501 PHOTO COUPLER 2
CAP SW
CAP HI-H AT +5.8V
Q512 P.ON 5V SW Q510
SW REG IC501 STR-F6552
1 4 3
T501 Q507 14 11 P.CON 5V SW Q502 P.ON SW
P.ON SW
SYSCON/ SERVO/TIMER
POWER ON-H POWER FAIL
D502~D505 RECTIFIER
L503 AC IN F501
12
HEATER SW Q505
HEATER SW HEATER_DC + HEATER_DC -
17 18
OPERATION
Q503 HEATER ON SW
I-4
A
B
C
D
E
F
G
H
8
DECK SCHEMATIC DIAGRAM
8
7
LOADING MOTOR M101
7
(DECK PCB)
S105
6
5.1 0 BOT SENSOR Q101 RPT-38PB113
6
S106
S101
S102
S103
S104
5
5
FROM/TO SYSCON/SERVO/TIMER CP101(CP1004) 52044-0445 LDM+ 1 2 3 4 LDMBOT VCC FROM/TO SYSCON/SERVO/TIMER CP102(CP1001) 173979-2 2 1 VCC EOT
4
5.1 0 EOT SENSOR Q102 RPT-38PB113
4
PCB550 VE8851
3
3
2
2
CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY
ARE
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
1
A
B
C
D
E
F
G
H
J-1
A
B
C
D
E
F
G
H
OPERATION SCHEMATIC DIAGRAM
8 8
7
7
6
(OPERATION 1 PCB)
(OPERATION 2 PCB)
6
5.1 0
OTPB SW Q601 DTA143ES TO DISPLAY R601 SKQNAED010 3.3K STOP/EJECT SW601 R602 2.7K REC/OTR SW602 R603 SKQNAED010 3.9K FF/CUE SW603 R604 SKQNAED010 SKQNAED010 6.8K PLAY SW604 R605 SKQNAED010 13K REW/REV SW605
5
2
CH.UP_SW
CD602(CP652) CH25082A 1 OTPB 2 3 4 5 CH.UP_SW AT+5V GND KEY-A C601 470P B
SLZ-345B-02-T1
CD601(CP651) 1 KEY A 3 GND CH23042A
D601 OTPB
FROM/TO DISPLAY
R607
220
5.1
5
R606 STILL/PAUSE SW606 SKQNAED010 1.5K
R608 SKQNAED010 SKQNAED010 SKQNAED010 CH.DOWN SW607 3.3K POWER SW609
R609 SKQNAED010 2.7K OTPB SW610
4
CH.UP SW608
4
PCB270 VE9861
PCB280 VE9864
3
3
2
2
CAUTION: DIGITAL TRANSISTOR
CAUTION: DIGITAL TRANSISTOR
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
1
A
B
C
D
E
F
G
H
J-2
PRINTED CIRCUIT BOARDS
OPERATION 1
OPERATION 2
DECK
SW606
CP101 SW603
CD601
SW602 CD602 C601 R603 Q101
CP102 Q601 SW607 Q102
R606
R601
R604
R602
SW608
SW601
SW604
R605
R608
R609
D601 SW605
R607
SW609 SW610
J-3
R537 D527 R502 W103 C502 D505 B501 FH502 D501 D503 C510 C507 R508 D507 IC501 D504 C512 Q501 R505 D512 IC502 R524 C515 D513 R523 R522 W814 W813 R503 C508 D502 L503 F501 FH501 C505 R501 C506_1 B502 R513 W860 T501 B504 D514 C513 W001 R516 D515 C517 L501 W843 R521 C516 C525 C521 D516 C533 C531
Q505
C526 C518 R520 D517_1
CP651_1
R529
R541
Q512
R538
W099
D521
D5
C529
W155 Q511
31
C522
D532
Q507
R548
W818 C520 C523 B503 D518 W004
C534 Q508 C532 C519 D519 D528 W100
R528
7 51 R
W101
D525
D1007
W137
W206 W207 W216 W806 Q1004 W872 R544 W039 W038 W219 W036 W209 W208 W205 W166 W167 W063 W062 D530 W210 W265 W215 W040 W115
C524
W821 W136
W212
Q1008
D1002
CP1004
R1034 D1003 C527 D1004 IC1001
R1002
W114
R1012
00
W035
5
C1010
Q1
W173
W150 W078 W177 W079 W082 R1033 W128 W085 W256 W257 W147 W146 W116 W125 W095 W123 W122 W070 W076 W075 W230 W231 R1001 W254 D1001 W127 W110 W126 W108 W262 W109
1 CP
00
3
C1007 TP4001 TP4002
C1028
W253 W255 W073 R1056 W072
W083 W084 W121
W028 W113 W027 L4015 W026 L4012 W213 L4009 C4081 Q4003 W260 C4059 CP4002 W164 Q4004 W132 C4077 C4093 W053 C4079 W008 W006 C4084 L4007 W133 C4101 C4090 R4034 W134 C4061 C4068 C4075 W007 W201 W801 R4017 W135 C4054 W031 R4007 C4052 R4048 C4024 C4010 W204 C4042 W203 L4013 C4073 W269 W052 C4044 W226 R4046 W106 W202 W074 C4015 C4041 L4011 W228 C4043 C4053 C4019 CP4001 W272 C4045 W273 L4008 C4039 W229 C4033 L4006 C4026 Q4006 R4028 W107 W054 Q4007 L5502 D4003 L4005 W185 W891 L4003
C1022 C660 C1015 W043 R1068
IC1004
Q1
00
2
W221 W064 W041 W042 W129
R1046
C659
W005
W098
W154
X1002
V651
W010
W009
X1001
W184
W069 W071 W153 C1039 C1027 C1029 W066 W141 W142 W143 W144
W157 W158
W271
W172
W037
R1042
W131
W156
D1006
R1023
CP1002_1
W807
W217 C1006
W032
W130
W211
W214
R525 W805 W820
CP506
R533
L502_1
C503
PRINTED CIRCUIT BOARDS SYSCON
W067 W065 W189 C1023 C1042 R1038 W068 W187 W188 R1004 C1036 W237
W232 C4025 W198
W227
X4001
IC1099
W061
W046 W180
W274
C5514
W161 W236
R5506 R5507
C5502
W251
R4507 C5531 C5530 C5523 W056 W178 W152 R1005 W118 W139 W117 W140 C651 W249 W252 W044 W181 W060 C5529 W192 W191 W190 W193 W050 C5528 C5527 W025 R4515 C5532 C4503 C5519 C6610 W059 W058 W055 C6609 W240 W160 W159 W247 W248 W245 W244 SW1001 W105 W242 W104 W842 R4803 W250 W243 R4528 W881 W091 W034 C4548 W183 W182 W092 W018 C4553 C4546 J4501
OS651
W233 W138 W235
CP4
L6601 L6602 W275 W179 W151 L4802 R6602 W879
003
C4529
L4503 W803 W863 W023 W266 W024 W830 L4807 R6601 R6604 W220 W263 C4804 W047 W864 W832 W834 R4815 L4805 W022 L4806 C4802 R6610 W869 W833 W861 C4812 X6601 W186 W823 C6622 C4808 W849 R6603 L4803 R4818 R6605 W865 W866 L6605 C6623 W033 C4815 C4806 W261 TP5501 TP5502 TP1001 TP1003 W824 W264 C6008 C4817 R4806 C6602 L6002 C6615 CP1001
W194 W088
L4801_1
W225
C4547
L4501 L4502 L4509 L4505 L4506 W196 L4504 C4820 W089 C6012 W087 W848 W822 W090 L4508 R4523 L4507 CP652 W195 L6004_1 L4510 C6007 R6012 D4502 TU6001 R6006 W086 L6001_1 W119 W003 C6013 C4213 W017 C4539 W016 W015 R4503 R4512 R4506
C6003 W011
W120 C6625 C6626 TP1002
J4204
C4212
R4203
R4204
W002
W224
C4530
C4545
L4512
W111
W051
W049
W048
R4516
J-5
R1043 W045
W197 C5504 C5509
01 10 Q
L4004 W199 W163 L5501
C5511
C5513 C5517
A
B
C
D
E
F
G
H
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
P.CON+5V 2FSC IIC_DATA VV-H V.H_SW PICTURE_CTL NA_REC-H 50V1 KA C4041 DUMMY_V.SYNC SYNC A_MUTE/TRICK-H 270uH IIC_DATA IIC_CLK L4008 3 100uH DUMMY_V.SYNC
8
FROM/TO SYSCON/SERVO/TIMER
(SYSCON PCB)
IIC_CLK L4013 EE/VV_V_OUT
8
6.3V 47 KA
0.1 B C4073
50V 2.2 KA
50V 0.47 KA
C4043
C4045
0.01 B
0.022 B
0.01 F
C4061
R4040 0.1 B L4007 C4100
C4058
18P CH
C4047
C4051
C4065
R4021
C4068
820
C4037 R4014
39uH
C4082
0.1 B
1K
4
0.022 B
50V 4.7 KA
C4036
7
0.1 B C4049
0.1 B
C4067
1
ENV.DET
7
5P CH
0.001 B
4.433619MHz
L4011
4.7K C4063
27K X4001
C4011 FROM/TO 21PIN/OSD/VPS 2FSC R4047 1K 0.001 B
5 V.H_SW C4016 0.033 B ENV.DET C4014 0.1 B
81
82
EE/VV_V_OUT C4025 2.1 50V3.3 KA1.4 0.1 2.3 2.3
2FSCVCO
FH SYNC COLOR KILLER ID DET
P SW26R SW25 DL
KILLER DET OUT ENV HPF DET HA GND COMP DET DET + SP2 SW33 SW34 + SW35 SP1 HA VCC EP2 + SW36 EP2 SW37 EP1 SW38 EP1 + SW39 DET CH1 FROM MESECAM DET + AVCC SW1EP ON PRE AMP SW40 SP ON SW4 SW5 P SW2 R VCA SW3 REC ON CH1 VCA SW31 CH2 EP L SECAM SW27 REC MUTE P SW7 R L SECAM + FM AGC DET P EQ S SQPB DL SQPB 1M HPF 7M HPF LAG LERD LPF FM MOD FO/DEV ADJ S-DET YVCC MAIN EMPH CARRIER OFFSET W.C/DC SP1 SW30 CH2 SW29 SP 1/2 2FL VCO DOWN CONV. 1/2 PHASE SW ME SECAM DET PB/REC REC DISCRI AFC REC APC PB APC
LEVEL DET2 R +
C SQUELCH
SYNC.SEP.
49
6
SWD_VIDEO_IN
2.5
X TAL VCO/OSD LIMITTER HEAD SW1 HEAD SW2 TANC
CR DET 2FSC
SERIAL CONT INTERFACE
VCA
50
Y/C/AUDIO/CCD/H.AMP IC4001 NC HA118217F NC 2.1 2.8 4.7 2.1 2.1 1.7 1.7 1.9 2.1 2.5 2.8 1.4 5.0 5.0 5.0 2.2 4.2 3.2 3.0 5.0 2.1 0.1 3.3 2.8 2.1 2.0 2.8 2.7 0 0 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 2.5 C GND DO CVCC
KIL LEVEL DET1 NTSC/PAL N-P CONT OUT CCD LPF 6dB AMP 6dB AMP
R4025
C4053
NC
NC
R4034
CTL-
50V 4.7 KA
R4033 V.ENV 1K TP4002
C4076
H.SW TP4001
330 C4080
0.01 B
CTL+
0.01 B
C4071
0.01 B
12uH
2
0.4 0 0 0 2.0 0 2.6 5.2 3.8 0.01 B C4088 C4090 5.2 5.2 3.5 C4105_1 5.2 180P CH 0.1 5.2 3.3 0 0 0 2.8 C4086 0.01 B
R4045 100
SYNC
6
83
84
85
FROM/TO TUNER/HIFI
86
87
88
NORMAL_A_IN NORMAL_A_OUT HF1 HF2 HF_COM EP-L EP_COM FROM POWER AT+5.8V P.CON+5V GND FROM/TO CYL CP4001 9 TOC-C09X-A1 HF1 (R) HF COM HF2 (L) SP-CH1 (R) SP COM SP-CH2 (L) EP/LP-CH1 (R) EP/LP COM EP/LP-CH2 (L) HF1 HF_COM HF2 SP-R SP_COM SP-L EP-R SP-R P.CON+5V
90
91
B.E R
92
93
94
95
VCC=5V
96
97
98
R
P
R
100 99
MUTE
1B
0.01 B R4010
C4023
270K
4
31
8 7 6 5 4 3 2 1
1K
2.5
SW9
SW15 CLAMP P R
REC EQ
BAND A.GND GAP
SW6 3 2 1
32
A_MUTE/TRICK-H
R4007
1.9
Y LPF R P CLAMP
SW12
ATT (-10dB) LPF
ATT (-10dB)
ATT (-10dB)
33
MAIN DE EMPH
SW10 P
SW14 YNR REC DO DO
CH1 CH2
34
1mH
0 NC 5.0
SUB LPF
FBC/ALC VIDEO AGC CH3 SW115
35
P.CON+5V
L4006 50V1
KA
5.0
DEMO
36
0.01 B
C4026
3.4
DLIM NL NL EMPH DE EMPH
SW16 R P
R D.E. N.C. REC AGC DEL PB ALC
37
C4021
0.01 B
0
G EQ
DO EDGE DET DELAY
Y APA
MODE CONT CCD
38
0.01 B C4032
0
629 TRAP
P SW17
39
0.01 B C4022
0
LPF
P
SW18 TRAP C CCD Y CCD
40
5
C4031
C4020 0.1 B
0
MIX LEVEL C.K ADJ
CLOCK DEIVER
41
0.01 B 5.1
SEP HPF COMP SW19
6.3V 47 KA
L4004 10uH 0405
89
42
C4019 C4030 6.3V 47 KA
2.3
2M LPF
P SW20 ACC R
CTL TRAP HPF FHTRAP
43
0.01 B 0.01 B 2.3
SW28
B.D
FEED BACK CLAMP VIDEO ALC
44
SP_COM
C4018
C4029
SW32 SP2
N P
SQUELCH
4PHASE GEN
45
SP-L
C4017 0.01 B
ACC DET
APC SW
DELAY
CLPH CLPH SW24 P R MAIN CONV2 MAIN + CONV1 SW22 P SW23 R R P P SW21 R BPF
C.K
LMIT WHAITH
CCD GND
46
PULSE GEN
CLEAR SYNC
47
48
5
L4015 100uH
P.CON+5V
SW11
SWD_VIDEO_IN
YGND
AGC
4
1 2.5 2.5 C4039
2 C4040 16V10 KA
3 0 2.5 680P B C4042
4 50V4.7 KA 0
5 2.8 C4044
6
7
8
9
10
11
12
13
14
15
16 R4048 2.2M
17
18 0.1 B
19
20 0.1 B
21
22 C4074
23 0.1 B
24
25
26
27 47P CH
28
29
30 R4051 10
2.5 2.6 2.5 2.5 2.5 5.0 1.5 1.5 2.6 0.7 0.6 2.2 3.2 2.7 2.4 2.1 3.1 2.1 1.5 2.1 C4054 6.3V 22 KA 50V4.7 KA 160P CH 6.8K C4060 0.1 B 3.3K C4077 50V3.3 KA C4103 C4064 C4052 R4030 C4066 NC NC
0 2.7 1.7 2.8
6.3V 47 KA
C4027
EP_COM EP-L
C4015
EP-R
R4011
16V10 KA
16V10 KA
16V 10 KA
C4075
1 B
R4053
8.2K C4033 R4012 6.3V 22 KA 180
R4031 C4056
47K +-1%
18K +-1%
R4029
27P CH
5.6K
C4062
1.5K
39P CH
0.01 F
C4050
C4079
C4093
120P CH
C4104
C4099
R4013
R4018
R4020
R4035
5.6K
0.1 B
W890
47K
0.1 B
C4094
50V 1 KA
0 0
50V
3
C4072
C4101
1 KA
3
5.0 V.AGC SW Q4008 DTC144EKA VV-H
10K
R4049
220uH
L4012
820P CH
47P CH
C4034
C4102
C4098 470P CH
R4046
820
C4057
R4028
3.9K 22K
L4009
150 0.01 B
R4004
C4009
100V0.022 TF
C4081
L4003
100uH
D4003
R4038 NA_REC-H W801
0.01 B
0
NA_REC-H
0.0047 B AT+5.8V
P.CON+5V
C4007
TO F/E HEAD CP4003 TMC-T02X-E1 1 2 FE HEAD(GND) FE HEAD(HOT)
2.2K NORMAL AUDIO REC ST SW Q4003 2SD734
10V 220 YK
6
AUDIO PB
0
C4010
1SS133
5
10V33 KA
5.5
10K C4008
C4024
4
CTL+ AUDIO REC
6
4.7K 0.7
P.CON+5V
CTL-
CTL+
R4005
PICTURE_CTL
3
R4006
CTL-
NORMAL_A_IN
2
AE HEAD(-)
3 L4005 1626008
4
NORMAL_A_OUT
2
3.3
CP4002 52045-0645 AE HEAD(+) 1
C4035 5.4 5.7 5.7 OSC Q4004 2SD734 1 2 6 5
R4017
0.01 B
100uH
FROM/TO A/C HEAD
C4028
PB SW 220P B PB SW 5.6K Q4006 Q4005 +-1% 2SC2274K 0 DTA124EKA R4015 0.7 5.2 5.2 4.7K 0 0.6 PB SW Q4007 2SC2274K 0 R4016 0
7
C4059
R4042
6.3V 47 KA
0.1 B
W891
C4084
2
1
CAUTION: DIGITAL TRANSISTOR
CAUTION: DIGITAL TRANSISTOR NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
V V: THE PICTURE ON SCREEN APPEARS DURING PLAYBACK.
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
RECORD LUMINANCE SIGNAL RECORD COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL AUDIO SIGNAL(PB) AUDIO SIGNAL(REC)
PCB010 VM9150
1
A
B
C
D
E
F
G
H
J-7
A
FROM/TO POWER HEATER_SW CAP_HI-H POWER_FAIL CAP_VCO AT+5V-A
B
C
D
E
HIFI_REC_MUTE
F
HIFI_H.SW/VV-H
G
H
AFT_S_CURVE
HIFI_ENV.DET
SYSTEM CONTROL/SERVO/TIMER SCHEMATIC DIAGRAM
HEATER_SW POWER_FAIL FROM/TO TUNER/HIFI
PERI_CTL-L
CG_CLK
IIC_CLK
IIC_CLK
CG_CS
D1007 D1006 1N4005E
AT+5.8V POWER_ON-H AT+12.6V P.CON+5V GND (S/S) (CYL) (CAP) (LDM) GND GND GND IC1001 1SS133
HEATER_SW
DUMMY_V.SYNC
POWER_ON-H
HIFI_H.SW/VV-H
MSSW_B
MSSW_A
CH.UP_SW
NA_REC-H
CAP_LIMIT
REMCON
V.H_SW
ENV.DET
BOT
VV-H
SENS_LED
R1046
7
KEY-A
22K
F/R
EOT
AT+5V
8
CG_DATA
IIC_DATA
IIC_DATA
AGC_DET
(SYSCON PCB)
FROM/TO 21PIN/OSD/VPS
RGB_ON-H
8
7
R1069 10K
BA6955AN LOADING MOTOR DRIVER CONTROL LOGIC 18K R1023 4.7K STD POWER SAVE R1037 6.3V 220 KA
R1068
R1042
R1032
22K
22K
1K
FROM/TO Y/C/A/H.AMP R1070 10K VV-H R1044 22K V.H_SW PICTURE_CTL NA_REC-H 99 100 0.1 R1057 5.6 220 5.2 2.5 0 2.6 2.6 C1023 C1024 0.0039 B C1029 16V10 KA C1035 R1061 10K C1037 0.1 B 0.001 B C1031 0.1 B C1030 0.1 B 8 C1039 6.3V 47 KA C1040 0.1 B FF/REW SW Q1006 DTC124EKA 4.9 0 0 0 0 DUMMY_V.SYNC SYNC A_MUTE/TRICK-H IIC_DATA IIC_CLK ENV.DET 4.9 FF/REW SW Q1007 DTC124EKA
MSSW_B
COLOR ROTARY
REMOCON
ENV COMP
HEATER SW
SECAM_REC-L
POWER ON-H A
CAP_MID-H
H.AMP SW
CAP_LIMIT
CAP_FWD
SECAM_L
MSSW_A
AH SW
VH SW
1 12.0 R1002 2.7 1W 0
2 0
3 0
4 0.1
5 0
6 0.1
7 12.0 C1007
8 25V100 KS
NC
SENS LED
CH UP
CAP_HI-H
KEY-A
SERVICE_1 SP.STILL NC NC NC CLKSEL VCC X IN X OUT VSS XC IN XC OUT RESET BGDK-H
FF/REW-L
D.V SYNC
V.ENV
A.ENV
BOT
GND TP1002 NC
SERVICE TP1001 NC
C1015
5.0 0 NC 0 NC 0 0
NC NC NC NC NC NC 5.0 0.3 0 0 0.1 5.0 0 0 1.2 0 5.0 2.5 2.5 0.1 0 0 2.1 0.7 1.4 1.4 5.1 5.1 1.3 2.2 0.3 0.3 0 2.3 0 4.8 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 5 4 3 2 1 8 7 6 31 NC A VCC AMP VCC 1 2 3 AFT SC AGC DET AMP C EOT CTL AMP IN CTL SW OUT SYSCON/SERVO/TIMER IC1002 OEC7035B CTL + CTL AMP V.IN AMP V.OUT AMP VSS 51 POWER ON-L 45 NC I/O CTL LDM FWD SECAM VL-H T.A.MUTE-H PERI CTL-L FLD-D.OUT SECAM_IN SERVICE_2 LDM RVS NC RGB_ON-H 51 0 52 53 52 NC 46 78 CYL CTL 79 REEL-S 80 REEL-T 32KHz MONITER DFG DPG CFG C SYNC HIFI REC MUTE PICTURE_CTL V.REC ST-H NC CAP CTL P.FAIL NC 78 79 80 CTL AMP OUT CTL VSS
LDM.R
LDM.F
LM+
LM-
33
32
6
98
6
34
D1002