Sony SLV-D300P (serv.man3) Service Manual ▷ View online
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
IC601-87:HIGH(5V)
CHANGE IC601
CHECK
START SENSOR (S601)
IC601
CHECK
DM B
+ LINE
CHANGE IC610
NO
NO
NO
YES
IC601-59:LOW(0V)
IC601-58:HIGH(5V)
IC610-59:HIGH(5V)
IC610-58: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
LINE 2 INPUT
VIDEO MISSING IN
EE MODE
IC301-26
VIDEO OUT
NO
NO
NO
IC601-49, 50
VIDEO IN
YES
YES
0801-E
VIDEO OUT
YES
CHECK
R804
NO
CHECK
C832, R805
NO
NO
TM VIDEO
IN PIN 5
CHECK
IC601
NO
IC301-53,54
VIDEO DATA/
CLOCK
YES
YES
CHECK OSD PICTURE
CHECK IC801, Q801
CHECK
R638, C626,
C622
NO
IC601-50
SYNC IN
YES
CHECK
LINE OUT
(VCR Section)
7-6
VIDEO MISSING IN
RECORD MODE
IC301-21pin
VIDEO signal out?
NO DEFECT RECORD MODE
E-E mode and IC301-26pin
CHECK VIDEO signal out
NO
YES
IC301-22pin
VIDEO signal out?
CHECK C305
NO
YES
IC301-14pin
CHECK REC FM signal?
CHECK IC301-23pin Power
5Vp-p
NO
YES
IC301-70pin
REC FM signal in?
CHECK IC301-68pin Power
5Vp-p and R320
NO
YES
IC301-73pin (SP)
IC301-66pin (SLP)
CHECK REC FM signal?
CHECK drum wafen and
VIDEO head
NO
YES
(VCR Section)
VIDEO MISSING IN
PLAY MODE
VIDEO EE MODE
OPERATION
PLACE THE VCR PLAY MODE
CHANGE IC301
CHECK Q802
CHECK
VIDEO HEAD
CHECK
C305
CHECK
IC601-23
CHECK VIDEO
OUT LINE
SEE PAGE 6-6
(VIDEO MISSING IN EE MODE)
NO
YES
YES
NO
YES
YES
VIDEO FM
IC301-14
VIDEO
IC301-22
VIDEO
IC301-26
VIDEO
IC801-12
VIDEO
IC801-20
NO
H'D SW
IC301-57
NO
YES
YES
NO
NO
NO
CHECK IC801
(VCR Section)
7-7
COLOR MISSING IN
RECORD MODE
(VIDEO IN)
RECORD MODE
(VCR Section)
NOTE: XT301 - Always (3.579545MHz)
COLOR signal
IC301-46
COLOR KILLER
IC301 "60"(2V)
CHANGE
IC301
CHECK THE REC LINE
SEE PAGE 6-6
(VIDEO MISSING IN RECORD
MODE)
NO
NO
NO
YES
NO
YES
CHECK XT301
CHANGE XT301
NO
NO
CHANGE IC301
COLOR MISSING IN
PLAY MODE
FM-ENV
IC301-14
COLOR-MONITOR
IC301-46
COLOR-KILLER
IC301-"6"(2V)
SW 30HZ
IC301-57
CHANGE
IC301
CHECK IC301-48, 51
XT301
CHECK IC601
SEE PAGE 6-7
(VIDEO MISSING IN PLAY MODE)
NO
NO
NO
NO
YES
YES
YES
YES
NOTE: XT301 - Always (3.579545MHz)
(VCR Section)
CHECK
IC301-26
7-8
OSD PICTURE
MISSING
CHECK IC601-37, 38pin
14.318MHz signal out
CHECK IC601-52,53pin
AFC signal out
CHANGE IC601
CHECK C618,C619
CHECK C626, R639
YES
NO
YES
NO
(VCR Section)
SELECT LINE MODE
WITHOUT INPUT SIGNAL
BLUE MISSING IN
STOP MODE
CHANGE IC601
SHOW WEAK
CHANNEL NO IN CHANNEL
SETUP OF OSP SETUP
CHECK IC601-37, 38pin
14.318MHz out
CHECK IC601-52, 53pin
AFC signal
CHECK C626, R639
CHECK C618, C619
NO
NO
NO
YES
YES
YES
SET THE SHOW WEAK
CHANNELS TO "NO"
CHECK IC601-50pin
SYNK signal
CHECK C622, R638
NO
YES
(VCR Section)
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