Sony HCD-RV7 / HCD-RV8 / MHC-RV7 / MHC-RV8 Service Manual ▷ View online
HCD-RV7/RV8
33
33
MAIN BOARD (1/4)
CN202
B
0.2
3.3
IC711
SG-264
DISC TRAY
STATUS SENSOR
S711
OPTICAL PICK-UP
UP/DOWN DETECT
C712
0.1
D+3.3V
D. GND
D+3.3V
D. GND
TURN
MOTOR
DRIVER
DRIVER
D+3.3V
D. GND
(LOAD IN)
(LOAD OUT)
S701
DISC TRAY
OPEN/CLOSE DETECT
OPEN
CLOSE
7-13. SCHEMATIC DIAGRAM – DRIVER/MOTOR/SENSOR (CD) Boards –
•
See page 54 for IC Block Diagram.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : CD PLAY
no mark : CD PLAY
7-12. PRINTED WIRING BOARDS – DRIVER/MOTOR/SENSOR (CD) Boards –
•
See page 27 for Circuit Boards Location.
14
(14)
14
(14)
14
(14)
C712
1
4
OPTICAL PICK-UP
UP/DOWN DETECT
CN202
B
IC711
IC701
S701
DISC TRAY
OPEN/CLOSE DETECT
M721
(TURN)
(Page 37)
(Page 38)
HCD-RV7/RV8
34
34
7-14. PRINTED WIRING BOARDS – SW/HEAD (A)/HEAD (B) Boards –
•
See page 27 for Circuit Boards Location.
PM901
(DECK A)
PM902
(DECK B)
1
4
(12)
(12)
R
CN304
IC1001
(DECK A PLAY)
IC1002
(DECK B HALF)
(DECK B REC)
NO303
NO302
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
12
S
C
HPRE901
(REC/PB/ERASE HEAD)
(DECK B)
HP901
(PB HEAD)
(DECK A)
DECK A
HALF
M901
(CAPSTAN)
M
(DECK A REC)
(DECK B PLAY)
• Semiconductor
Location
Ref. No.
Location
D1001
B-4
D1002
B-10
IC1001
B-2
IC1002
B-10
Q1001
B-3
(Page 37)
(Page 37)
(Page 37)
HCD-RV7/RV8
35
35
C
MAIN BOARD (3/4)
CN304
[3.3]
[3.3]
[8.2]
[8.2]
[0]
[∗] {2.9}
<<2.9>>
<<2.9>>
[1.5]
{∗
} <<
∗
>>
(CAPSTAN)
CAPSTAN MOTOR
CONTROL SWITCH
TAPE SPEED
(NORMAL)
TAPE SPEED
(HIGH)
ROTATION
DETECT
SENSOR (DECK A)
ROTATION
DETECT
SENSOR (DECK B)
+3.3V
+3.3V
CAPM
−
CAPM+
CAPMH/L
ATRGM+
TRGMGND
BTRGM+
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
S1003
(DECK A HALF)
S1005
(DECK A REC)
S1006
(DECK B HALF)
S1009
(DECK B REC)
C1001
33
10V
PM902
(DECK B)
PM901
(DECK A)
+3.3V
+3.3V
7-15. SCHEMATIC DIAGRAM – SW Board –
• Voltages are dc with respect to ground under no-signal
conditions.
[
[
] : TAPE PLAY (DECK A)
{
} : TAPE PLAY (DECK B)
〈〈
〉〉
: REC
∗
: Impossible to measure
(Page 40)
• Waveforms
– BD Board –
– BD Board –
1
IC103
qg
(RFAC) (CD Play Mode)
1.05
±
0.3 Vp-p
Approx.
250 mVp-p
250 mVp-p
2
IC103
qh
(FE) (CD Play Mode)
Approx.
350 mVp-p
350 mVp-p
3
IC103
qk
(TE) (CD Play Mode)
0.75
±
0.1 Vp-p
4
IC103
wk
(RFDC) (CD Play Mode)
– VIDEO Board –
ea
IC504
1
(BCK)
3.3 Vp-p
474 ns
es
IC504
3
(LRCK)
2.7 Vp-p
22.7
µ
s
ed
IC504
qh
(MCLK)
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
HCD-RV7/RV8
36
36
qg
IC501
qd
(X-OUT)
qf
IC501
qa
(XC-OUT)
2.4 Vp-p
30.5
µ
s
1.9 Vp-p
62.5 ns
2.1 Vp-p
12.1
µ
s
10.8Vp-p
12.1
µ
s
qs
Q302, Q303 (Collector) (Rec Mode)
– MAIN Board –
qa
Q302, Q303 (Base) (Rec Mode)
0.4 Vp-p
12.1
µ
s
qd
Q302, Q303 (Emitter) (Rec Mode)
2.8 Vp-p
250 ns
– PANEL Board –
wa
IC601
is
(X0)
eh
IC304
1
(VOUT), IC505
6
(CPSIG)
(Video CD Play Mode)
580 mVp-p
H
ej
IC307
8
(BUF IN)
(Video CD Play Mode)
2.1 Vp-p
H
ek
IC307
6
(BUF OUT)
(Video CD Play Mode)
300 mVp-p
H
el
IC505
ij
(L CDLRCK),
ik
(LRCK)
2.7 Vp-p
22.7
µ
s
r;
IC505
os
(L CDBCK),
od
(BCK)
3.3 Vp-p
474 ns
ra
IC505
<zcc
(MDP) (CD Play Mode)
1.5 Vp-p
7.6
µ
s
rs
IC505
<zb/
(XTAO)
3.3 Vp-p
29.5 ns
rd
IC505
<zn/
(RFDC) (CD Play Mode)
rf
IC505
<znx
(TE) (CD Play Mode)
rg
IC505
<znv
(FE) (CD Play Mode)
rh
IC505
<zmc
(RFAC) (CD Play Mode)
0.75
±
0.1 Vp-p
Approx.
350 mVp-p
350 mVp-p
Approx.
250 mVp-p
250 mVp-p
1.05
±
0.3 Vp-p
rj
IC505
<x/m
(CLKB)
2.9 Vp-p
37 ns
qh
IC781
1
(VIN1),
7
(VOUT)
(Video CD Play Mode)
2.1 Vp-p
H
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