PANASONIC NV-SJ422 Service Manual

http://cxema.ru

SPECIFICATIONS

ORDER NO. VRD0104022C2

Video Cassette Recorder

NV-SJ422EE

Z-MECHANISM

http://cxema.ru

1. INTRODUCTION

This service manual contains technical information which will allow service personnel to understand and service this model. If the circuit is changed or modified, this information will be followed by supplementary service manual to be filed with original service manual.

Note:

Adjustment procedures, Disassembly Procedures and Assembly Procedures for Mechanism Chassis are separate volume from this service manual. / Please refer to the service manual for Z-Mechanism Chassis. (Order No. VRD9802005C2)

2. GENERAL DESCRIPTIONS

2.1. SERVICE CAUTION

2.1.1. REPLACING IC7702/EEPROM

When the EEPROM: IC7702 is replaced, applicable model code, option code and electrical adjustment data will not be available. Therefore, enter and/or adjust the necessary data after replacing IC7702 by referring following procedure.

STEP1.REPLACE THE IC7702

1. Remove the C.B.A. with Mechanism unit by referring the Disassembly procedure.

2. Disconnect the AC plug and replace the IC7702.

STEP2.INPUT THE MODEL & OPTION CODE

1. Set up the applicable model code and option code by ordering the following table.

http://cxema.ru

PROCEDURE F.I.P. DISPLAY

Turn on the Service Mode

1.Press the FF key and the EJECT key simultaneously for more than 3 seconds.

Activate the Service Mode 2

2.While keep placing FF key, press the EJECT key in twice.

Activate the Entering Mode.

3.Press the EJECT key for more than 3 seconds.

Set the Mode 2.

4.Press the CH UP key in twice.

Display the Setting Code.

5.Press the POWER Button to turn the power on.

Enter the Model and Option Code.

6.Set the applicable Model and Option code by using REW, PLAY, STOP and FF keys on the Remote Controller. (See Fig.S1 & S2)

Exit from Service Mode.

7.Press the POWER Button to turn the power off.

8. Press FF and EJECT keys simultaneously in 6 times.

(Colon starts

flashing)

(Normal Indication)

Fig.S1 Service Secreen (sample)

Model No. Model

NV-SJ422EE

Option

Code

38 / (26h) 8 / (08h) 244 /

Code 1

Option Code 2

(F4h)

Option Code 3

6 / (06h)

http://cxema.ru

Fig. S2 Model Code & Option Code

NOTE:

Since all electrical adjustments data is still not available, perform the Electrical Adjustment continuously.

2.1.2. CYLINDER UNIT REPLACEMENT

1. CYLINDER UNIT REPLACEMENT A. Remove the mechanism unit from MAIN C.B.A./Chassis by referring “SECTION 2. Disassembly Procedure”. B. Remove the 3 screws (A) of the CYLINDER UNIT with a screw driver. C. Unlock the 4 locking tabs (B) and disconnect the Cylinder fiexible card from the FPC Holder. D. Remove the CYLINDER UNIT.

CAUTION:

Handle the Cylinder fiexible card with care. When it damaged, you should replace whole Cylinder unit.

Fig. S3

2. UPPER CYLINDER DISASSEMBLY A. Remove 2 screws (A). B. Remove the Cylinder Stator Unit. C. Remove 2 screws (B). D. Remove the Cylinder Rotor Unit. E. Loose Hex screw (C) (1.5 mm) and remove the CYLINDER RETAINER. F. Remove the Upper Cylinder.

Fig. S4

http://cxema.ru

3. UPPER CYLINDER ASSEMBLY When reassembling, perform the steps in the reverse order.

Notes:

1. Install the Cylinder Retainer so that the 2 holes on top of the Cylinder Retainer are at right angles with the P3502 Connection.

2. Tighten the Hex screw (C) (1.5 mm) while pressing down on top of the Cylinder Retainer.

Fig. S5

3. Install the Cylinder Rotor Unit so that the inner hole of the Cylinder Rotor Unit fits to the small projection (D) on top of the Upper Cylinder.

4. Tighten 2 screws (B).

http://cxema.ru

5. install the Cylinder Stator Unit.

6. Tighten 2 screws (A).

Fig. S6

Fig. S7

7. Confirm the PG SHIFTER ADJUSTMENT with the alignment tape (PAL: VFJ8125H3F) and adjust it if necessary.

2.1.3. CHECKING OF MAIN C.B.A.

When servicing the MAIN C.B.A., take out the MAIN C.B.A. and mechanism from the frame and turn over.

Fig. S8

2.1.4. FLAT CARD CABLE INSTALLATION

When installing the Flat Card Cable on the connector, install the Flat Card Cable with the cable contacts

http://cxema.ru

facing the connector contacts.

Fig. S9

2.2. REMOVAL OF CASSETTE TAPE

There are 2 ways to remove a cassette tape.

1. Service Information Display Operation A. Press the FF and EJECT keys simultaneosly for 3 seconds and set the Service Mode 7. B. Press STOP key in order to rotate the Loading Motor for unloading operation. (Pay an attention of tape slack)

2. Manual Operation A. Disconnect the AC Mains Lead and remove the Top Panel. B. Rotate the Main Cam Gear clockwise until the Loading Posts move to fully unloaded position as shown in

(Tape is remaining)

Fig. S10

Fig. S10.

C. Rotate the Capstan Motor clockwise from the bottom side to take up the tape.

D. Rotate the Main Cam Gear clockwise until the cassette tape is ejected.

Fig. S11

http://cxema.ru

2.3. INTRODUCTION OF VIDEO HEAD CLEANING CASSETTE /

(POLISHING TYPE)

1. We are pleased to introduce Panasonic Video Head Cleaning Cassette, VFK0923FT [for service purposes] and VFK0923FSE [ for end users] for all VHS/SVHS VCP and VCR.

2. These cleaning cassettes are exclusive removing the hard and sticky clogging on video heads.

3. These improve the efficiency of video head cleaning service and shortening cleaning time for end users.

VFK0923FT

(For Service usage)

Type of Cassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

Tape Length 20 m

Usability in a Path 180 Times

VFK0823FSE

(For end users)

Type of Cassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

Tape Length 3.34 m

Usability in a Path 30 Times

http://cxema.ru

VFK0823FSE

(For end users)

Note:

The tape material itself is the same in both types.

2.4. SELF-DIAGNOSIS RESULT DISPLAY

The "SELF-DIAGNOSIS RESULT DISPLAY & MEMORY function is built in this VTR. It means that when the VCR detects undesirable condition, it can be displayed a “Error code (Two numbers from the left)” with Service Mode 2. Since the "Error code" is stored in the EEPROM, it can be displayed although after disconnected the AC leads. It can be displayed with Service Mode 2. (If a second error had been detected, only the most recent error is displayed. ) For more details, refer to the Service Manual for Z-Mechanism Chassis Order number VRD9612M129.

http://cxema.ru

INDICATION CAUSE REMEDY/CHECK

01 After cylinder lock is detected, the cylinder does

Check the cylinder motor drive circuit.

not start rotating again even after tape unloading.

02 Cassette tape is not wound up during the tape

Check the capstan motor drive circuit.

unloading except EJECT mode.

03 Mechanism locks during mode transition except

EJECT mode.

04 Mechanism locks during tape unloading.

06 Mechanism locks after tape unloading in EJECT

mode.

07 During recording mode, recording signal is less

than the normal condition.

1. Check the loading motor drive circuit.

2. Check the mechanism phase alignment.

3. Check the mode switch.

1. Check the loading motor drive circuit.

2. Check the mechanism phase alignment.

1. Check the loading motor drive circuit.

2. Check the mechanism phase alignment for cassette holder un

Protection of the over-current flowing in transi which produces the power supply for recordin mode.

08 Recording circuit works except recording mode. Check the recording circuit.

16 Cylinder lock detection. Check the cylinder unit and the cylinder moto

drive circuit.

17 Supply reel mechanism lock detection Check the supply reel mechanism and the su

reel circuit.

18 Take-up reel mechanism lock detection Check the Take-up reel mechanism and the

Take-up reel circuit.

2* PG shifter automatic adjustment error. Check the servo/system control circuit and th

cylinder unit.

Fig. T1 Self-Test indication Display

3. ADJUSTMENT PROCEDURES

3.1. DISASSEMBLY METHOD

3.1.1. DISASSEMBLY FLOW CHART

This flow chart indicates disassembly steps of the cabinet parts and the circuit boards in order to find the necessary items for servicing. When reassembling, perform the steps in the reverse order.

Fig. D1

http://cxema.ru

3.1.2. DETAIL OF DISASSEMBLY METHOD

1. REMOVAL OF THE TOP PANEL

Remove 4 Screws (A)

Fig.D2

2. REMOVAL OF THE FRONT PANEL UNIT

Unlock 7 Tabs (B)

Fig. D3

http://cxema.ru

3. REMOVAL OF THE MECHANISM UNIT

Remove Screw (C) Remove CYLINDER SHIELD

PLATE Remove Screw (D)

Remove 3 Screws (E)

Remove 2 Screw (F)

Note:

1. Keep pressing 2 stoppers on Cassette Holder Plate and Press Cassette Holder Plate to the rear.

2. Remove the Mechanism Unit after bend the Cylinder Shield in the direction of the arrow.

Fig. D4

http://cxema.ru

4. REMOVAL OF THE MAIN C.B.A.

Remove 4 screws (G)

Unlock 4 Tabs (H)

Fig. D5

NOTE:

Before mounting the MAIN C.B.A. onto the frame, be sure to confirm that the insulation sheet is mounted on

http://cxema.ru

the frame as shown in Fig. D6.

5. SERVICING POSITION

Fig. D6

Fig. D7

3.2. MECHANICAL ADJUSTMENT PROCEDURES

Refer to the Service Manual for Z-Mechanism Chassis. / (Order No. VRD9802005C2)

3.3. ELECTRICAL ADJUSTMENT PROCEDURES

3.3.1. TEST EQUIPMENT

The following equipments are required for Electrical Adjustments.

1. Dual-Trace Oscilloscope

- Voltage Range: 0.005-5V/div

- Frequency Range: DC-35MHz

- Probes: 10:1 / 1:1

2. Frequency Counter

- Frequency Range: 0-10MHz

- Probes: 1:1

3. Universal Counter

4. Digital Volt Meter (D.V.M.)

http://cxema.ru

5. Video Sweep Generator

6. Sinewave Generator

7. Video Pattern Generator

8. Monitor TV

9. DC Power Supply

10. VHS Blank Tape

11. VHS Alignment Tape

- Parts No.: VFJ8125H3F(PAL)

3.3.2. VCR SETTING

When no indication in the procedure, set each selector as follows.

1. TAPE SPEED: SP

2. CHANNEL: AV1/AV2/AV3 (Set to signal input terminal number)

3.3.3. ADJUSTMENTS

Fig.E1 Fig.E2

CONDITION: BURST SIGNAL OFF / 75 ohm TERMINATED

3.3.4. PG SHIFTER ADJUSTMENT / (AUTOMATIC)

http://cxema.ru

PROCEDURES FIP DISPLAY

Press the FF and EJECT Keys simultaneously for 3 seconds.

Press the FF and EJECT Keys simultaneously twice.

Press the EJECT key for 3 seconds.

Press the CH UP key once.

Insert the Alignment cassette tape. (PAL:VFJ8125H3F)

When the sequence of the automatical adjustment has been terminated, the following action has been made. *SUCCEED: The cassette tape is ejected. *ERROR : The "F2"is displayed on the FIP. (Check the Servo/Syscon circuit and Cylinder unit.)

Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication.

Fig. E3

3.3.5. AI FUNCTION ADJUSTMENT (AUTOMATIC)

PROCEDURES FIP DISPLAY

Press the FF and EJECT Keys simultaneously for 3 seconds.

Press the FF and EJECT Keys simultaneously twice.

Press the EJECT key for 3 seconds.

Press the CH UP key in 3 times.

Insert the blank cassette tape. (The adjustment is automatically started.)

When the sequence of the automatical adjustment has been terminated successfully, the VCR goes to STOP mode.

http://cxema.ru

PROCEDURES FIP DISPLAY

Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication.

Fig. E4

3.3.6. VIDEO FREQUENCY RESPONSE ADJUSTMENT

PROCEDURES FIP DISPLAY

Input the Video sweep signal. (See Fig.E1)

Press the FF and EJECT Keys simultaneously for 3 seconds.

Press the FF and EJECT Keys simultaneously twice.

Press the EJECT key for 3 seconds.

Press the CH UP and/or CH DOWN key until "11" is displayed on FIP.

Insert the Self-recorded tape and playback it. (SP/LP/EP mode)

Connect the Oscilloscope to:

*CH1....Video Out (TW3002).

*CH2....V.FREQ.(TW6002)

Press the "4" key on the remote controller. (Confirm that TW6002 becomes high(5V)).

Adjust the Frequency response by pressing the "2"(increase) and/or "8"(decrease) key on the Remote Controller. (See Fig.E2)

Store the Adjusted value by pressing the "5" key on the Remote Controller.

Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication.

Fig. E5

3.3.7. LOCATION OF TEST POINTS& CONTROLS

http://cxema.ru

3.3.8. CIRCUIT BOARD LAYOUT

http://cxema.ru

443NT [L] A. COMP A. COMPO A. D.P [L] A. D/L [L] A. DEF [S] A. DEF [S] [L] A. DUB P [L] A. DUB [H] A. ERASE A. H. SW A. HEAD [R] A. HEAD [W] A. IN [L] A. IN [R] A. MUT [H] A. MUTE [H] A. OUT [L] A. OUT [R] A. RF OUT A/VS/S. DATA AC ONLINE AC. O/EE. H AFC S C AFC [S] AFC. DEF ARFC OUT ART. V ART. V. MM

ART. V/H/N

AT. V/H/N ATSW/TEST/NOR/SE AUDIO IN [L] AUDIO IN [R] AUDIO OUT [L] AUDIO OUT [R] AUDIO SELECT [H] AUDIO. L AUDIO. R AV CNT AV CTL AV CTL/S. CLK AV. C.M. AVCNT/METER. R AVSW/METER. L B MODE. H B.G.P BACKUP 5V BAND. U.E. BANDVL. D BI/MI [L]

4.43 NTSC

AUDIO COMPONENT SIGNAL AUDIO COMPONENT SIGNAL AUDIO DUBBING PAUSE

AUDIO DUBBING PAUSE L AUDIO DEFEAT AUDIO DEFEAT AUDIO DUBBING PAUSE

AUDIO DUBBING H AUDIO ERASE AUDIO HEAD SWITCHING PULSE AUDIO HEAD (REC) AUDIO HEAD (PLAY) AUDIO INPUT (L) AUDIO INPUT (R) AUDIO MUTE

AUDIO MUTE H AUDIO OUTPUT (L) AUDIO OUTPUT (R) AUDIO RF SIGNAL OUTPUT AV SW/SERIAL DATA AC ONLINE AC ONLINE/EE

AFC S CURVE AFC S CURVE AFC DEFEAT AUDIO RF SIGNAL OUTPUT ARTIFICIAL VERTICAL SYNC SIGNAL ARTIFICIAL VERTICAL SYNC SIGNAL MONO MULTI ARTIFICIAL VERTICAL SYNC SIGNAL

H/NORMAL ARTIFICIAL VERTICAL SYNC SIGNAL TEST/NORMAL/SERVICE AUDIO INPUT (L) AUDIO INPUT (R) AUDIO OUTPUT (L) AUDIO OUTPUT (R) AUDIO SELECT

AUDIO (L) AUDIO (R) AV CONTROL AV CONTROL AV CONTROL/SERIAL CLOCK AV CONTROL MODE AV CONTROL/LEVEL METER (R) AV SW/LEVEL METER (L) B MODE

BURST GATE PULSE BACK UP 5V BAND U BAND VL BILINGUAL/MIX

BIL BIL [L]

BIL. [H] BIL/M1 [L] BS CLOCK BS DATA BS LCH IN BS MIX [H] BS MON [H] BS MONI [H] BS RCH IN BS VIDEO BS VIDEO/BS1 BS [H] BS. LEVEL BS. M [H] BS/VTR [H] BUS CLK BUS LSN BUS TLK BUZZER CAP EC CAP M GND CAP. ET CAP. FG1 CAP. FG2 CAS. SW CCN CCP CHM CHP CINEM [L] CINEMA [L] CINEMA/MIX CKL CKS CL CLK CLK (C.G) CLOCK. IN CLP COL/B/W/NOR COLOR [H] CONV CS CTL GND CTL HEAD [

]

CTL HEAD [

−

]

CTL [

]

CTL [

−

] CUE BIAS CURRENT LIM CYL ET

BILINGUAL BILINGUAL

BILINGUAL H BILINGUAL L BS CLOCK BS DATA BS L CHANNEL INPUT BS MIX

BS MONITOR H BS MONITOR H BS R CHANNEL INPUT BS VIDEO SIGNAL BS VIDEO SIGNAL BS

BS LEVEL BS MONITOR

BS/VTR H BUS CLOCK BUS LISTEN BUS TALK BUZZER CAPSTAN TORQUE CONTROL CAPSTAN MOTOR GND CAPSTAN TORQUE CONTROL CAPSTAN FG1 PULSE CAPSTAN FG2 PULSE CASSETTE SW PLAYBACK CONTROL SIGNAL (−) PLAYBACK CONTROL SIGNAL (

) CONTROL SIGNAL (+) CONTROL SIGNAL (

−

)

CINEMA

CINEMA L CINEMA/MIX RATCH LOCK SHIFT LOCK CLOCK CLOCK CLOCK CLOCK INPUT CLAMP COLOUR/BLACK & WHITE/NORMAL COLOUR H CONVERTOR CHIP SELECT CONTROL GND CONTROL HEAD (

)

CONTROL HEAD (

−

)

CONTROL HEAD (

)

CONTROL HEAD (

−

) CUE BIAS CURRENT LIMMITER CYLINDER TORQUE CONTROL

http://cxema.ru

CYL GND D.F.M. REC [H] D. FM REC [L] D. GND

D. REC [H] D4/S. LED D4/STILLED DAC [CLK] DAC/FSCS DAREC [H] DATA DECODER [L] DECODER [R] DEW DEW SNS DFMRE [H] E. REC 5V EC ECR

EDT TRIG [L] EDIT [H] EE [H] EE [H]/INS [M] EE. VV. TR EJECT. PO EJECT/VDET ENV. SEL ENVE. OUT ENVE. SEL ENV SELECT EP [H] EP/LP [H] EP/LP/SP EP/SS [H] EPROMCS EX. REC 5V FF/REW [L] FG1 IN FG2 IN FILTER ADJUSTMENT FLY ERASE [H] FLY ON [H] FLY. E [H] FM MUT [H] FM MUTE [H] FM OUT [L] FM OUT [R] FM PACK OUT [L] FM PACK OUT [R] FM/BS SEL [L] FM/BS SEL [R] FS. CLK FUL. E [H] FULL. E [H]

CYLINDER GND DELAIED FM RECORDING

DELAIED FM RECORDING L DIGITAL GND DELAYED RECORDING

D4/STILL LED D4/STILL LED TUNER DAC (CLOCK) TUNER DAC/FS CHIP SELECT DELAYED AUDIO RECORDING

DATA DECODER (L) DECODER (R) DEW DEW SENSOR DELAYED FM AUDIO RECORDING

EXCEPT RECORDING 5V ERROR TORQUE CONTROL ERROR TORQUE CONTROL REFERENCE VOLTAGE EDIT TRIGGER

EDIT H EE H EE H/INSERT M EE/VV/TRICK PLAY EJECT POSITION EJECT/REVERSE SLOW LOCK ENVELOPE SELECT ENVELOPE OUTPUT ENVELOPE SELECT ENVELOPE SELECT LP

LP H LP/SP LP/SLOW/STILL/STOP

EPROM CHIP SELECT EXCEPT RECORDING 5V FIRST FORWARD/REWIND

FG1 PULSE INPUT FG2 PULSE INPUT FILTER ADJUSTMENT FLYING ERASE HEAD ON

FLYING ERASE HEAD ON H FLYING ERASE HEAD ON H FM AUDIO MUTE H FM AUDIO MUTE H FM OUTPUT (L) FM OUTPUT (R) FM PACK OUTPUT (L) FM PACK OUTPUT (R) FM/BS SELECT (L) FM/BS SELECT (R) FS CLOCK FULL ERASE HEAD ON

FULL ERASE HEAD ON H

FULL. E. 12V GND [A] GND [TU] GND/N. SW. 12V H. SYNC H. AMP. SW H. P <R> H. P <L> H. P GND H. P OUT [L] H. P OUT [R] H. SW HEAD PHONE [L] HEAD PHONE [R] HEAD SW HEATER [

]

HEATER [

−

] HSS HTR [

]

HTR [

−

] I RFE ICL IF IN SELA1 IN SELA2 IN SELA3 INS L/R [L] INS. [H] INSEL A1 INSEL A2 INSERT INSERT [H] IO CS JOG1 JOG S3 LED/FOWRD JOG/F. LED JSB [H] JST. CLCK JST. CLK JST. CLOCK L. OUT L. CH [H] L. CH [L] LED (MAIN) LED (STEREO) LED (SUB) LED CKL LED CKS LED DATA LINE IN 1 [L] LINE IN 1 [R] LINE IN 2 [L] LINE IN 2 [R] LINE IN V LINE IN [L]

FULL ERASE 12V GND (ANALOG) GND (TUNER) GND/NON SW 12V HORIZONTAL SYNC HEAD AMP SW PULSE HEAD PHONE (R) HEAD PHONE (L) HEAD PHONE GND HEAD PHONE OUTPUT (L) HEAD PHONE OUTPUT (R) HEAD SW PULSE HEAD PHONE (L) HEAD PHONE (R) HEAD SW HEATER (

)

HEATER (

−

) HORIZONTAL SYNC SIGNAL HEATER (

) HEATER (

−

) REFERENCE CURRENT CONTROL AGC CIRCUIT INTERMEDIATE FREQUENCY INPUT SELECT A1 POSITION INPUT SELECT A2 POSITION INPUT SELECT A3 POSITION INSERT Lch/Rch

INSERT H INPUT SELECT A1 POSITION INPUT SELECT A2 POSITION INSERT INSERT

INPUT/OUTPUT CHIP SELECT JOG1 JOG LED/FORWARD LED JOG LED/FORWARD LED JSB

JUST CLOCK JUST CLOCK JUST CLOCK Lch OUTPUT Lch

Lch L LED (MAIN) LED (STEREO) LED (SUB) LED SERIAL CLOCK LED SERIAL CLOCK LED SERIAL DATA LINE INPUT 1 (L) LINE INPUT 1 (R) LINE INPUT 2 (L) LINE INPUT 2 (R) LINE INPUT VIDEO LINE INPUT (L)

http://cxema.ru

LINE IN [R] LINE OUT [L] LINE OUT [R] LP [H] LPTRI [L] Lch/A. DUB M GND M REG MAIN OUT MAIN [L] MAIN/MONO MAX IN MES [H] MESE [H] MESE [L] METER 5V METER [L] METER [R] METER. L/AVS METER. R/AVC MI/BI [L] MIC GND MIC IN MIC IN [L] MIC IN [R] MIC [H] MIX [H] MIX [H]/CINEMA [L] MIX/CINE MIX/CINEMA [L] MN. H/M. L MN. H/MAI. L MN2/MES. L MODE SEL MODE SW MODE. S. IN MODE. S. OUT MONO [H] MONO [H]/MAIN [L] MONO2 [L] MONO2/MESE [FM(L)] MOTOR GND MUTE N. A. REC [L] N. SW 12V N. SW. 5. DET NICAM NICAM [L] NOL [H] NOR/SOFT [H] NORMAL [H] NR BIAS NTSC [L] OCH OUT

LINE INPUT (R) LINE OUTPUT (L) LINE OUTPUT (R) LP

LP TRICK PLAY L Lch/AUDIO DUBBING MOTOR GND MOTOR REGULATOR MAIN OUTPUT MAIN

MAIN/MONAURAL MAXIMAM INPUT MESECAM

MESECAM H MESECAM L LEVEL METER 5V LEVEL METER (L) LEVEL METER (R) LEVEL METER (L) LEVEL METER (R) MIX

H/BILIGUAL MIC GND MIC INPUT MIC INPUT (L) MIC INPUT (R) MIC

MIX H MIX H/CINEMA SOUND L MIX H/CINEMA SOUND L MIX H/CINEMA SOUND L MONAURAL H/MAIN L MONAURAL H/MAIN L MONAURAL 2/MESECAM L AUDIO MODE SELECT AUDIO MODE SW AUDIO MODE SELECT INPUT AUDIO MODE SELECT OUTPUT MONAURAL

MONAURAL H/MAIN L MONAURAL 2 MONAURAL 2/MESECAM (FM

L) MOTOR GND MUTE NORMAL AUDIO RECORDING NON SW 12V NON SW 5V DETECT NICAM NICAM

PAL H/4.43 NTSC M/3.58 NTSC

NORMAL/SOFT TAPE PLAY H NORMAL H NR BIAS NTSC

CONTROL AGC CIRCUIT OUTPUT

P-OFF [H] P-OFF [L] P. FAIL P. OFF [H] P. OFF [L] PAL [H] PAL [L]/NTSC [H] PB ADJ OUT PB OUT PB. H PFG PHOTSN +B PICT. CNT PLAY LED/RVS LED PLAY. PO PLAY/R. LED PLY/DEW POWER OFF [L] PREROLL [H] PWRFAIL R. CH [H] R. CH [L] R. ST R/S/F RCH [H] REC 12V REC CHROMA REC H REC IN REC OUT [L] REC START REC VR [C] REC VR [L] REC VR [R] REC Y REC [H] REC. C REC. Y REC/EE CTL REEL-T REEL-S REGULATOR FILTER RESET REV M F/R

REV M V1 REV M V2 REV MOTOR F/R

REV MOTOR V1 REV MOTOR V2 REV MOTOR [

]

REV MOTOR [

−

] REV. M. GND RF. CHROMA

POWER OFF

POWER OFF L POWER FAILURE DETECT POWER OFF

POWER OFF L PAL H PAL L/NTSC H PLAYBACK ADJUST OUTPUT PLAYBACK OUTPUT PLAYBACK

PG/FG PHOTO SENSOR +B PICTURE CONTROL PLAY LED/REVERSE LED PLAY POSITION PLAY LED/REVERSE LED PLAY/DEW

POWER OFF L PREROLL H POWER FAILURE DETECT Rch

Rch L RESET REVERSE H/STOP M/FORWARD

Rch H RECORDING 12V RECORDING CHROMINANCE SIGNAL RECORDING H RECORDING INPUT RECORDING OUTPUT

RECORDING START RECORDING VOLUME (COMMON) RECORDING VOLUME (L) RECORDING VOLUME (R) RECORDING LUMINANCE SIGNAL RECORDING H RECORDING CHROMINANCE SIGNAL RECORDING LUMINANCE SIGNAL RECORDING/EE CONTROL REEL PULSE (TAKE-UP) REEL PULSE (SUPPLY) REGULATOR FILTER RESET REVIEW MOTOR FORWARD/REVERSE REVIEW MOTOR V1 REVIEW MOTOR V2 REVIEW MOTOR FORWARD/REVERSE REVIEW MOTOR V1 REVIEW MOTOR V2 REVIEW MOTOR (

)

REVIEW MOTOR (

) REVIEW MOTOR GND RF CHROMINANCE SIGNAL

http://cxema.ru

RF OUT RF Y RF. Y. IN RF. Y. OUT ROTAR. SW ROTARY RST RST [L] Rch/INST S IN S OUT S-PHOTO S-RL. PLS S. CLK S. CLK/AV S. DATA S. DATA/A S. PHOTO S. TAB [L] S/P/N SC IN SC OUT SCK SELECT SEL OUT [L] SEL OUT [R] SHUTTLE 1 SIF SLMUT [H] SLNID [

]

SLNID [

−

] SLW TR. MM SLW TR. REF

SNS. GND SOFT [H] SOFT [H]/NORMAL SOLENOID ON [L] SP [H] SP/L/SLP SSS [L] STEREO LED STEREO [H] STEREO [L] STOP. PO STOP/5V STOP1/TAPE SEL STOP1/PAL:ST STOP2. PO STOP2/S-TAB STREO [H] SUB BIAS SUB. SW SVHS CAS [L] SW. 5. DET SYNC [L]

RF OUTPUT RF LUMINANCE SIGNAL RF LUMINANCE SIGNAL INPUT RF LUMINANCE SIGNAL OUTPUT ROTARY SW ROTARY SW RESET RESET

Rch/INSERT SERIAL DATA INPUT SERIAL DATA OUTPUT SUPPLY PHOTO TRANSISTOR SUPPLY REEL PULSE SERIAL CLOCK SERIAL CLOCK/AV SERIAL DATA SERIAL DATA SUPPLY PHOTO TRANSISTOR SAFETY TAB SW ON

SECAM/PAL/NTSC SERIAL CLOCK INPUT SERIAL CLOCK OUTPUT SERIAL CLOCK SELECT SELECT OUTPUT (L) SELECT OUTPUT (R) SHUTTLE 1 SOUND INTERMEDIATE FREQUENCY INPUT SELECT MUTE H SOLENOID (

)

SOLENOID (

−

) SLOW TRACKING MONO MULTI SLOW TRACKING REFERENCE VOLTAGE SENSOR GND SOFT TAPE PLAY

SOFT TAPE PLAY H/NORMAL H SOLENOID ON L SP H SP/LP SLOW/STILL/STOP STEREO LED STEREO

STEREO L STOP POSITION STOP POSITION/5V STOP1 POSITION/TAPE SELECT STOP1 POSITION/PAL STOP 2 POSITION STOP 2 POSITION/SAFETY TAB SW STEREO H SUB BIAS SUB SW S-VHS CASSETTE

SW 5V DETECT SYNC

SYSCON 5V SYSTEM T-PHOTO T-RL. PLS T. BUSCLK T. BUSLSN T. BUSTLK T. END [L] T. PHOTO TAPE END [L] TAPE END [L]/CAM TEST TPZ TRIC [L] TRICK [L] TRK. ENV TU. AUDIO TU. GND TU. V. IN TU. VIDEO TUN NOR IN TUN R TUN. AUDIO IN TUNER 12V TUNER L TUNER V IN TUNER [L] TUNER [N] TUNER [R] TUNER. 12 TUOFF [H] TV. AUDIO TV/VTR TXTON [L] U. REG45V UNREG UNREG19V V. REF V. EE [H] V. EE [L] VCO REF VD. IN VD. OUT VIDEO EE [L] VIDEO IN VIDEO OUT VM VM DOWN [L] VSS VTR [H] VTR. 12V X IN X OUT

SYSTEM CONTROL 5V SYSTEM SW TAKE-UP PHOTO TRANSISTOR TAKE-UP REEL PULSE TIMER BUS CLOCK TIMER BUS LISTEN TIMER BUS TALK TAPE END

TAKE-UP PHOTO TRANSISTOR TAPE END

TAPE END L/CAMERA PAUSE TEST MODE TRAPEZOIDAL WAVE CIRCUIT TRIC PLAY

TRIC PLAY L AUTO TRACKING ENVELOPE DETECT TUNER AUDIO TUNER GND TUNER VIDEO SIGNAL INPUT TUNER VIDEO TUNER NORMAL INPUT TUNER AUDIO (R) TUNER AUDIO INPUT TUNER 12V TUNER AUDIO (L) TUNER VIDEO SIGNAL INPUT TUNER AUDIO (L) TUNER AUDIO (NORMAL) TUNER AUDIO (R) TUNER 12V TUNER OFF

TV AUDIO TV/VTR TEXT ON

UNREGULATOR 45V UNREGULATOR UNREGULATOR 19V REFERENCE VOLTAGE VIDEO EE

VIDEO EE L REFERENCE OSCILLATER VIDEO SIGNAL INPUT VIDEO SIGNAL OUTPUT VIDEO EE

VIDEO SIGNAL INPUT VIDEO SIGNAL OUTPUT MOTOR VOLTAGE MOTOR VOLTAGE DOWN

VERTICAL SYNC SIGNAL VTR

VTR 12V OSCILLATOR INPUT OSCILLATOR OUTPUT

http://cxema.ru

No. Port Name 1 CURRENT_LIMIT O Capstan motor current limit terminal. Low Low Low Low 2 F ADJUST O Analogue voltage output for HEAD frequency response adjustment Low Low Low Low 3 N.C. -- Low fix (No Connection.) Low Low Low Low

4 C EMPHA(H) O

5 TRACKING_ENVE O Playback envelope input for auto tracking adjustment and cvc. In In In In

6 SLP(H) O

7LP(H) O

8CPB I

I/O

Terminal of the Current emphasis video/FM audio recording current.

[HIFI/2HEAD ]:Fix to Low (Normal mode) [4HEAD] :Fix to Low (factory mode)

Fix to High (Insert/AV Insert mode) Others (Depend on tape speed)

Tape running speed output terminal.(Output signal depens on tape speed)

[High]………During NTSC_10H or PAL_9H mode [Low ]………Except NTSC_10H or PAL_9H mode

Tape running speed output terminal.(Output signal depens on tape speed)

[High]………During NTSC_4H/6H or PAL_6H/9H mode [Low ]………Except NTSC_4H/6H or PAL_6H/9H mode

2HEAD model: Low Fix Input terminal for "PB (H)" from AV2.

[High]………3.85V - 5.0V [Midd]………1.82V - 2.84V [Low ]……… 0V - 0.81V

Description P-OFF

Low Low Low Low

In In In In

P-Save

P-FAIL Reset

9 AFC S I "S-curve" Input terminal from tuner. In In In In 10 A-MUTE(H) O Audio mute output terminal for RF Converter. High High Low High

Input terminal for "PB (H)" from AV1.

11 AV1_8IN I

12 N/S/T2/T3 I

13 S-PHOTO I

14 T-PHOTO I

15 ABS_NORM(H) I (Input terminal for FM audio enverope output level detection) In In In In 16 N.C -- Low fix (No Connection.) Low Low Low Low

17 PLAY_REC(L) O

[High]………3.85V - 5.0V [Midd]………1.82V - 2.84V [Low ]……… 0V - 0.81V

Mode select terminal

[NORMAL mode ]: More than 4.0V [SERVICE mode]: 2.5V - 4.0V [TEST_2 mode ]: 1.0V - 2.5V [TEST_3 mode ]: 0V - 1.0V

Tape end sensor input terminal.(Photo sensor input from supply side)

[Black Tape]: more than 2.6V [Lead Tape]: Less than 2.4V

Tape beginning sensor input terminal.(Photo sensor input from take-up side)

[Black Tape]: more than 2.6V [Lead Tape]: Less than 2.4V

Output terminal for switching the capstan voltage.

[Other than PLAY/REC mode]……………Always "High".

[JOG/Shuttle mode in PLAY mode ]……Always "High". After 5 seconds from PLAY/REC mode completion, it changes to "Low". During "Low" outputs, it checks every main capstan FG, when the no FG is inputted in a rotation, it changes to "High" and it keeps "high" by cassette ejection.

In In In In

Low Low Low Low

Output terminal for V_sync detection result.

18 VSYNC(L) O

19 D.FM.REC(H) O Timing output terminal for FM_Audio recording current. Low Low Low Low 20 ART.V/H/N O Output terminal for Artificial V synchronization signal. Low Low Low Low

[Vsync exist] : "Low" [Vsync not exist: "High"

Low Low Low Low

+ 53 hidden pages