Sony SLV-D990PB / SLV-D990PE / SLV-D990PR / SLV-D995PE Service Manual ▷ View online
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
A
RECORD MODE
DOESN'T OPERATE
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)
7-4
LOAD TAPE AND
PRESS F.FWD BUTTON
FAST FORWARD
DOESN'T OPERATE
F.FWD
INDICATOR IN
THE DISPLAY
PRESS FF
KEY IN REMOTE
CONTROL
MECHANISM
STATE IC601-76, 77, 78
CHECK TIMER
CHANGE IC601, XT602
NO
STOP
NO
NO
YES
CAPSTAN MOTOR
ROTATION
SEE CAPSTAN DOES NOT
ROTATE
SEE MECHANISM DOES NOT
OPERATE IN PLAY MODE
YES
F.FWD
ROTATE
CHECK
MECHANISM
(VCR Section)
FWD SEARCH DOESN'T
OPERATE
PLAY
OPERATION
PRESS F.FWD FOR
FORWARD SEARCH
CHECK IC601
CHECK CAPSTAN
MOTOR
IS CAPSTAN
SPEED CHANGED?
SEARCH
OPERATION
NOISE BAR
LOCKING
END
ADJUST
A/CE HEAD
CHANGE DECK
CHANGE IC601
SEE
(PLAY DOESN'T OPERATE)
NO
NO
NO
YES
NO
(CONTROL PULSE)
IC601-89
NO
YES
YES
YES
YES
(VCR Section)
7-5
TURN THE VCR
POWER ON AND
INSERT A TAPE
PRESS EJECT BUTTON
CASSETTE LOADING
MECHANISM
DOES NOT OPERATE
TAPE DETECTED
CST IN MODE
IC601-75:HIGH(5V)
CHANGE IC601
CHECK
START SENSOR (S602)
IC601
CHECK
DM B
+ LINE
CHANGE IC601
NO
NO
NO
YES
IC601-38 : LOW(0V)
IC601-39 : HIGH(5V)
IC601-38 : HIGH(5V)
IC601-39 : LOW(0V)
CHECK
CASSETT LOADING
MECHANISM
YES
YES
NO
CN604 8pin 12V?
YES
NO
YES
(VCR Section)
PLACE VCR IN STOP MODE
CHANGE IC301
CHECK TM BLOCK
TUNER MODE OPERATION
VIDEO MISSING IN
EE MODE
IC301-61
VIDEO OUT
NO
NO
NO
IC802-13
VIDEO IN
YES
YES
IC802-14
VIDEO OUT
YES
CHECK
Q811, R844
NO
CHECK
C355
NO
NO
IC301-48
CHECK
IC601
NO
IC301-68 ; CLOCK
69 ; DATA VIDEO
YES
YES
CHECK IC802
CHECK
IC802
CHECK
LINE OUT
(VCR Section)
7-6
VIDEO MISSING IN
RECORD MODE
IC301-48, 50, 52
VIDEO signal out?
NO DEFECT RECORD MODE
E-E mode and IC301-61
CHECK VIDEO signal out
NO
YES
IC301-78
CHECK REC FM signal?
CHANGE C392
NO
YES
IC301-94 (SP)
IC301-88 (SLP)
CHECK REC FM signal?
CHECK CN301 CONNECTION
NO
YES
(VCR Section)
VIDEO MISSING IN
PLAY MODE
VIDEO EE MODE
OPERATION
PLACE THE VCR PLAY MODE
CHANGE IC301
CHECK IC6P01, Q6P01, R6P10
CHECK
VIDEO HEAD
CHECK
C392
CHECK
IC601-24
CHECK VIDEO
OUT LINE
SEE PAGE 7-5
(VIDEO MISSING IN EE MODE)
NO
YES
YES
NO
YES
YES
YES
VIDEO FM
IC301-21
VIDEO
IC301-78
IC301-65
VIDEO SIGNAL
IC6P01-19
VIDEO SIGNAL
IC301-61
NO
H'D SW
IC301-70
NO
YES
YES
NO
NO
NO
CHECK IC802, C380
(VCR Section)
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