Panasonic NV-FJ623EG, NV-FJ623EGY, NV-FJ628EE Service Manual

Service Manual

ORDER NO. VRD0202004C2

Video Cassette Recorder

l NV-FJ623EG/NV-FJ623EGY/NV-FJ628EE

Z-MECHANISM

1. INTRODUCTION

Note:

Procedures for Mechanism Chassis are separate volume from this service

The Model No. is indicated on the Schematic Diagram and Circuit Board

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.

1. Adjustment procedures, Disassembly Procedures and Assembly

manual./Please refer to the service manual for Z-Mechanism Chassis. (Order No. VRD9802005C2)

2. Diagrams as follows.

Model No. Indication Mark NV-FJ623EG (EG) NV-FJ623EGY NV-FJ628EE (EE)

(EGY)

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.

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.

(Colon starts flashing)

Enter the Model and Option Code.

6.Service Screen is displayed on the monitor.

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

Exit from Service Mode.

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

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

(Normal Indication)

Fig.S1 Service Secreen (sample)

NOTE:

Model No. Model

NV-FJ623EG/EGY 65

NV-FJ628EE 70

Option Code 1 Option Code 2 Option Code 3

Code

(41h)

(46h)

Fig. S2 Model Code & Option Code

125

(7Dh)

121

(79h)

196

(C4h)

196

(C4h)

(6h)

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 flexible card from the FPC Holder.

D. Remove the CYLINDER UNIT.

CAUTION:

Handle the Cylinder flexible 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

3. UPPER CYLINDER ASSEMBLY

When reassembling, perform the steps in the reverse order.

Notes:

A. Install the Cylinder Retainer so that the 2 holes on top of the Cylinder Retainer are at right angles

with the P3502 Connection.

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

Fig. S5

C. 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.

D. Tighten 2 screws (B).

Fig. S6

E. install the Cylinder Stator Unit.

F. Tighten 2 screws (A).

Fig. S7

G. 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 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 simultaneously 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 Fig. S10 . (Tape is remaining)

Fig. S10

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

Fig. S11

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

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

Note:

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

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 right)” 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 VRD9802005C2.

Fig. T1 Self-Test indication Display

INDICATION 01 After cylinder lock is detected, the cylinder does not start rotating again

even after tape unloading.

02 Cassette tape is not wound up during the tape unloading except EJECT

mode.

03 Mechanism locks during mode transition except EJECT mode. 1. Check the loading motor drive circuit.

04 Mechanism locks during tape unloading. 1. Check the loading motor drive circuit.

06 Mechanism locks after tape unloading in EJECT mode. 1. Check the loading motor drive circuit.

07 During recording mode, recording signal is less than the normal condition. Protection of the over-current flowing in transistor which produces the power

08 Recording circuit works except recording mode. Check the recording circuit. 16 Cylinder lock detection. Check the cylinder unit and the cylinder motor drive circuit. 17 Supply reel mechanism lock detection Check the supply reel mechanism and the supply 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 the cylinder unit.

CAUSE REMEDY/CHECK

Check the cylinder motor drive circuit.

Check the capstan motor drive circuit.

2. Check the mechanism phase alignment.

3. Check the mode switch.

2. Check the mechanism phase alignment.

2. Check the mechanism phase alignment for cassette holder unit.

supply for recording mode.

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

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

3. REMOVAL OF THE MECHANISM UNIT

Unlock 7 Tabs (B)

Fig. D3

Remove Screw (C) Remove 3 Screws (D) Remove 2 Screws (E)

Note:

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

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

Fig. D4

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

Fig. D6

Remove 4 Screws (F) Unlock 4 Tabs (G)

Fig. D5

NOTE:

Before mounting the MAIN C.B.A. onto the frame, be sure to confirm that the insulation sheet is mounted on the frame as shown in Fig. D6 .

5. SERVICING POSITION

Fig. D7

3.2 MECHANICAL ADJUSTMENT PROCEDURES

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

3.3.1 TEST EQUIPMENT

(Set to signal input terminal number)

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.)

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

3.3.3 ADJUSTMENTS

Fig.E1 Fig.E2

CONDITION: BURST SIGNAL OFF / 75 ohm TERMINATED

3.3.4 PG SHIFTER 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 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. 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

3.3.8 CIRCUIT BOARD LAYOUT

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 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

H/NORMAL

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 (

CUE BIAS

CURRENT LIMMITER

CYLINDER TORQUE CONTROL

)

−

)

−

)

−

)

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 (

HORIZONTAL SYNC SIGNAL

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

INPUT/OUTPUT CHIP SELECT

JOG1

JOG LED/FORWARD LED

JSB

JUST CLOCK

Lch OUTPUT

Lch

Lch L

LED (MAIN)

LED (STEREO)

LED (SUB)

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)

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 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 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

H/BILIGUAL

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 GND

RF CHROMINANCE SIGNAL

)

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

+ 53 hidden pages

Panasonic NV-FJ623EG, NV-FJ623EGY, NV-FJ628EE Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. INTRODUCTION

2.1.2 CYLINDER UNIT REPLACEMENT

2.1.4 FLAT CARD CABLE INSTALLATION

2.2 REMOVAL OF CASSETTE TAPE

3.1.1 DISASSEMBLY FLOW CHART

3.3.1 TEST EQUIPMENT

3.3.2 VCR SETTING

3.3.3 ADJUSTMENTS

3.3.8 CIRCUIT BOARD LAYOUT