Sanyo VM-EX220P Adjustment Manual page 81

8-2. SERVO/SYSTEM CONTROL CIRCUIT
'i
m
+
REFER TO "POWER
NG LOSS / POWER
POWER ON
INOPERATIVE "
1
OK
(REC PROOF)
MECHANISM
1 HIGHPUME
PULSE
PULSE
IC351-96
(TAPE
END)
1
LOW
1 LOW
+ HIGH
PRESS REC
START/STOP
CHECK
CHECK FPC and
BUTTON
R3301,R3304
MECHANISM
I
4
1C35 1-7
NG
(s/s Sw)
CHECK S3002
~
OK
tl
OK
DRUM
NG CHECK DRUM
CHECK
ROTATION
ROTATION
CN337, CN3J31
1
OK
LOADING
CHECK
LOADING
1
OK
CHECK
CAPSTAN
NOTE : FPC + Flat Printed Circuit
ROTATION
a
PLAY
TEST MODE :
\_ (TEST MODE)
Short Pin @ and Pin@ of J1OO5
I
] CHECK IC35* j
I
I 1
I RI
CN337-6 O
CHECK IC351,
(CAP PWM) R3502,RF3356 I
'u
I
CHECK PW I
I
REFER TO "POWER
NG Loss , POWER
SWITCH
INOPERATIVE
1
OK
1
CHECK
:LO ?%1
CASSETTE
DOWN SWITCH
1 OK
DRUM
REFER TO
ROTATION
"DRUM DOES
NOT ROTATE,
1
OK
MOTOR M 2 MECHANISM
1 OK
5V
CHECK Q3901
75'
I
OK
CHECK 1C391
LOADING
MOTOR
M 1 IC351 -9 Hi : Cassette holder up
Lo : Cassette holder down
X 2 Loading Motor starts loading
when cassette holder is down.
u
PLAY
TEST MODE :
~EST MODE)
Short Pin @ and Pin@ of J1OO5
+
IC381-6
(DRUM VS)
J3101andFPC and
MECHANISM
LOW
1 NG
CHECK IC351
I I
I
+
CN301-9
(DRUM VS)
CN337-CN301
1
LOW
CHECK IC351,
(DRUM PWM) R3503,RB356
1 HIGH
(
CN3131-7 b~
8-3 –
I
CHECK PW 1
I