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6-11

1) Make recordings on T-120 (E-120) and T-160 (E-180) tape.
    Make sure the playback output envelope meets the specification as shown in Fig. 6-15.
2) Play back a self recorded tape (recording made on the unit using with T-120 (E-120).
    The video envelope should meet the specification as shown in Fig. 6-15.
    In SP mode, (A) should equal (B).
    If the head gap is wide, upper cylinder should be checked.

Fig. 6-15 Envelope Input and Output Level

1) Run the T-160 (E-180) tape in the playback, FPS, RPS and Pause modes and observe tape wrinkle at each guide.
2) If excessive tape wrinkle is observed, perform the following adjustments in Playback mode :

◆ Tape wrinkle at the guide roller S, T section : Linearity adjustment.
◆ Tape wrinkle at tape guide flange : ACE head assembly coarse adjustment.

1) The rotation of the capstan motor causes the holder clutch ass’y to rotate through the belt pulley.
2) The spring wrap PLAY/REV of holder clutch ass’y drives the disk reel S, T through gear idler by rotation of gear center ass’y.
3) Brake is operated by slider cam at FF/REW mode.
4) Transportation of accurate driving force is done by gears. (Gear Center Ass’y)

 If the spec. does not meet the followings specifications, replace the holder clutch ass’y and then recheck.

< Table 6-2 >

PB

42 

±

 11

Cassette Torquemeter

RPS

145 

±

 30

Cassette Torquemeter

 A

B

7-1

F1SS01 is normal?

D1SS11, D1SF02

SHORT and OPEN

are normal?

Check feedback IC1SS2

Change short circuited or

opened parts

Change fuse

Check 2'st Voltage and D1SS12

Replace SCS11A

NO

NO

Is there voltage at

Collector of

SCS11A

NO

YES

YES

YES

Operation of

SCS11A is

normal?

NO

YES

Is the measurement of

power with in normal value?

is the SMPS to Main connector 

properly connected?

End repairs

Check power and front connector

Check the circuity around the clock

Check the circuity around 

IC601 reset

Check the soldering around the

IC601

Change  IC701

NO

NO

Key operatious such

as STOP,PLAY,OPEN 

are normal?

Check the circuity around the swith.

check the condition of commmunication

with Main Micom

(IC601-11; SCLK, 12; TXD, 13; RXD, 

52; RRQ, 66; SRQ)

NO

YES

YES

Check the circuity

around IC601 reset?

Check the soldering

around IC601 good?

NO

YES

XT602 8MHz

oscillation is normal?

NO

YES

YES

STOP,PLAY,OPEN

Key operatious are

normal?

YES

7-2

EE-VIDEO

INSERT THE CASETTE

TAPE RECORDED BY

ANOTHER VCR AND

PRESS PLAY BUTTON

PLAY

INDICATOR

IN THE DISPLAY

PRESS PLAY KEY

IN REMOTE 

CONTROL

MECHANISM

OPERATION

SEE (PB VIDEO) AUDIO MISSING

IN PLAY MODE

SEE

(MECHANISM DOES NOT

OPERATE IN PLAY MODE)

CHECK TIMER

CHECK 

IC601, XT602

SEE

(VIDEO MISSING IN EE MODE)

NO

NO

NO

YES

NO

PB-VIDEO

SEE

VIDEO MISSING

IN PLAY MODE

NO

YES

YES

YES

DOES NOT OPERATE

OR OPERATES

BUT STOP SOON

YES

(VCR Section)

LOAD A TAPE AND

PRESS PLAY BUTTON

TURN VCR POWER ON

TAPE LOADING

OPERATION

(LOAD)

IC601-75:LOW

CYLINDER

ROTATION

SW 25Hz

IC601-24

CYL FG.PG

IC601-97

CHECK CYLINDER

CHECK

START (S602)

IC601

NO

NO

NO

NO

YES

YES

YES

YES

CHECK CN604

pin8 12V

(VCR Section)

7-3

CAPSTAN

ROTATION

(S.T REEL)

IC601-98, 99

PROG.SW STATE

IC601-76, 77, 78

CHANGE IC601

CHECK 

LOADING MOTOR 

MECHANISM OR SW601

TAKE UP REEL SENSOR

SUPPLY REEL SENSOR

(PT601.PT602)

SEE

(CAPSTAN DOES NOT

ROTATE)

NO

DC

STOP MODE

YES

PULSE

YES

PLAY

OPERATION

LOAD VCR WITH A

BLANK TAPE AND

PRESS RECORD BUTTON

REC MODE

SAFETY TAB

D-REC A (H)

IC601-68

SEE 

(AUDIO MISSING IN 

RECORD MODE)

CHANGE SW602

CHECK IC601

CHANGE TAPE

SEE

(PLAY MODE

DOESN'T OPERATE)

EJECT

NO

NO

YES

NO

REC-VIDEO

SEE 

(VIDEO MISSING IN 

RECORD MODE)

NO

YES

YES

YES

YES

(VCR Section)