Schematic Diagram - Sw Board - Sony HCD-RV7 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-15. SCHEMATIC DIAGRAM – SW Board –
(CAPSTAN)
C1001
33
10V
PM902 PM901
(DECK B) (DECK A)
T E
L 1 3 9 4 2 2 9 6 5 1 3
S1003
(DECK A HALF)
S1005
(DECK A REC)
S1006
(DECK B HALF)
S1009
(DECK B REC)
w w w
.
http://www.xiaoyu163.com
[8.2]
[0]
CAPSTAN MOTOR
CONTROL SWITCH
[8.2]
TAPE SPEED
(NORMAL)
TAPE SPEED
(HIGH)
[∗] {2.9}
<<2.9>>
[3.3]
[3.3]
ROTATION ROTATION
DETECT DETECT
SENSOR (DECK A) SENSOR (DECK B)
+3.3V
S1001 S1002
(DECK A PLAY) (DECK B PLAY)
+3.3V
x a o u 1 6 3
y
i
http://www.xiaoyu163.com
8
Q Q
3 7 6 3 1
CAPM−
CAPM+
CAPMH/L
ATRGM+
TRGMGND
BTRGM+
C
+3.3V
+3.3V
MAIN BOARD (3/4)
CN304
(Page 40)
• Voltages are dc with respect to ground under no-signal
conditions.
[ ] : TAPE PLAY (DECK A)
} : TAPE PLAY (DECK B)
{
〈〈 〉〉 : REC
c o
∗
: Impossible to measure
.
35 35
2 4
9 9 8
• Waveforms
– BD Board –
1 IC103 qg (RFAC) (CD Play Mode)
1.05 ± 0.3 Vp-p
2 IC103 qh (FE) (CD Play Mode)
Approx.
250 mVp-p
3 IC103 qk (TE) (CD Play Mode)
5 1 5 0 8 9 2 4 9
Approx.
350 mVp-p
4 IC103 wk (RFDC) (CD Play Mode)
0.75 ± 0.1 Vp-p
m
HCD-RV7/RV8
2
9 9
– VIDEO Board –
ea IC504 1 (BCK)
3.3 Vp-p
474 ns
es IC504 3 (LRCK)
2.7 Vp-p
22.7 µs
ed IC504 qh (MCLK)
8 2 9 9
3.4 Vp-p
59.5 ns
ef IC303 1 (VIN), IC505 7 (CSIG)
(Video CD Play Mode)
480 mVp-p
H
eg IC303 6 (VOUT)
(Video CD Play Mode)
600 mVp-p
H