Sony SLV-D990PB / SLV-D990PE / SLV-D990PR / SLV-D995PE Service Manual ▷ View online
7-11
PLAY
NO SERVO LOCK
IC601-93
C-FG
IC601-87
CTL PULSE
CHECK
CTL PULSE AC
LEVEL (SP. SLP:
OVER 1Vp-p)
CHANGE
IC601
CHECK
A/CE HEAD
CHECK
CN604-1
NO
NO
NO
YES
YES
YES
(VCR Section)
CAPSTAN DOES
NOT ROTATE
PLACE THE VCR
IN PLAY MODE
CN604-2
15V
CN604-3
PC 5V
CN604-9
3.2V
CN604-5
2.6V
CN601-3
OUTPUT(PWM)
IC601-10
OUTPUT(PWM)
CHECK
CAPSTAN MOTOR
CHECK R660
CHECK R609
CHANGE
IC601
CHECK
IC601
CHECK
B+ IN THE POWER BLOCK
CHECK PC5V
5V AT LINE
IN THE POWER BLOCK
NO
NO
NO
NO
YES
NO
YES
NO
YES
YES
YES
YES
(VCR Section)
7-12
DRUM DOES
NOT ROTATE
CN604-8
12V
CN604-3
5V
CN604-12
2.5V
CHECK
CYLINDER MOTOR
IC601-5, 9 DRUM CTL "L"
CHECK PC5V LINE
CHECK AL12V
12V AT LINE
IN THE POWER BLOCK
NO
NO
NO
YES
YES
YES
CHANGE IC601
NO
CHECK
R608, C659, R617, C661
(VCR Section)
7-13
No focus incoming
PWMO
in DIC1-145
is within specified range?
(PWMO Waveform)
DRIC-37, 38 output
are normal?
Check open state from
DRIC1 to pick-up.
Check DIC1 and A, B, C, D input.
Check DRIC1.
Yes
Yes
No
No
(DVD Section)
No pick-up home positing
Check the Sled Motor and connection
SLED+, SLED-
DRIC-32, 33 output are
normal?
Check DRIC1
Yes
Yes
No
(DVD Section)
7-14
NO DVD LD ON
DIC1-124 is "H"?
Check LD of Pick-up.
Check DIC1
Yes
No
QLP2 Collector is "L"?
Check QLP2
Yes
No
MDQ1 Collector is "H"?
Check MDQ1
Yes
No
(DVD Section)
Abnormal rotation of
disc motor
SPDRV output is normal?
(DIC1-76)
DIC1-140(SPDL-SENS)
Input is normal?
Check disc motor.
Check DRIC1 soldering.
Resoldering DIC1.
Yes
Yes
No
No
Input of A, B, C, D
signal is normal?
(DIC1-131~134)
Check DIC1 perpheral circuit
and DCON3 connector
Yes
No
(DVD Section)
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