Sony CMT-M80V / HCD-M80 Service Manual ▷ View online
HCD-M80
37
37
6-22. SCHEMATIC DIAGRAM – POWER Board –
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
D921
D920
D922
R905
R902
R907
R906
IC901
D919
R904
C921
D911
D913
D912
D910
D908
D906
D907
D909
D904
D902
D903
D905
IC904
R903
C925
D916
D914
D915
D917
C901
D918
JW918
R901
JW916
JW920
CN901
CN903
CN902
Q902
C918
C920
L901
T901
T902
JW915
LF901
S901
F901
F907
F906
F903
F904
RY901
1SS133T-77
11ES2-TA1B
11ES2-TA1B
1k
1k
1k
1k
KIA7808API
2A02M
47k
4700
16V
11ES2-TA1B
11ES2-TA1B
11ES2-TA1B
11ES2-TA1B
2A02M
2A02M
2A02M
2A02M
1N5401
1N5401
1N5401
1N5401
4.7k
3300
25V
2A02M
2A02M
2A02M
2A02M
0.01
250V
250V
MTZJ-T-77-6.2B
2.2
2P
3P
11P
2SC2785
10
50V
47
16V
T1.6AL
250V
T2.5AL
250V
T2.5AL
250V
T2.5AL
250V
T2.5AL
250V
RELAY ON
COM
115V
230V
COM
+14.2V(R2)
R1-GND
R2-GND
BACKUP4V
COM 8V
FAN CONTROL
AC DET
230V
COM
230V
115V
COM
124V
COM
230V
COM
124V
220V
220V
M-GND
CD8V
O
G
I
+4V REGULATOR
POWER
ON/OFF
RELAY DRIVE
O
G
I
+8V REGULATOR
(SP)
(TH)
(EA)
TRANSFOMER
MAIN POWER
∗
NOT REPLACEABLE:
BUILT IN TRANSFORMER
TRANSFOMER
SUB POWER
(SP)
(TH)
(EA)
(TH)
(EA,SP)
(T
H
)
LINE
FILTER
(AC IN)
-2
-1
110V-120V
220V-240V
VOLTAGE
SELECTOR
(EA,SP)
(EA,SP)
(TH)
-22.5V
+22.5V
DVD POWER CONT
µPC3504AHF
100µH
(Page 31)
(Page 33)
HCD-M80
38
38
• 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)
– VMP Board –
ea
IC504
1
(BCK), IC505
<x/c>
(AUDBCK)
3.3 Vp-p
474 ns
es
IC504
3
(LRCK),
IC505
<x/v>
(AUDLRCK)
2.7 Vp-p
22.7
µ
s
ed
IC504
qh
(MCLK),
IC505
<x/b>
(AUDXCLKO)
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
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
13.6 Vp-p
18.4
µ
s
67.2 Vp-p
18.4
µ
s
ts
Q401 (Collector) (REC Mode)
– TC Board –
ta
T401 (REC Mode)
57.6 Vp-p
18.4
µ
s
td
T101, 201 (REC Mode)
39
HCD-M80
3.2 Vp-p
30.5
µ
s
– CONTROL Board –
ya
IC601
qa
(XCOUT)
ys
IC601
qd
(XOUT)
1.7 Vp-p
63 ns
rj
IC505
<x/m
(CLKB)
2.9 Vp-p
37 ns
40
HCD-M80
RW/ROM
RW/ROM
EQ ON/OFF
VOFST
VOFST
DVC
VC
VC
VC
RW/ROM
VC
DVC
30
29
28
+
–
+
–
DVC
VCC
DVC
27
26
25
24
RW/ROM
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
RW/ROM
VC
RW/ROM
DVC
+
–
3
A
B
C
D
B
C
C
A
A
A
B
C
C
D
B
C D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
RW/ROM
APC-OFF
(Hi-Z)
RW/ROM
(H/L)
VOFST
VC
RW/ROM
+
–
10
11
GM
GM
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
F
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDCO
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
• IC Block Diagrams
– BD Board –
– BD Board –
IC103
CXA2581N-T4
6
5
1
2
3
4
7
8
TINT
GND
BGP
V OUT
COLOR OFFSET
COLOR
V IN
V+
HUE ADJUST
–X
+Ø
SATURATION
ADJUST
(COLOR BURST)
SATURATION
ADJUST
(COLOR BURST)
IC303
NJM2255 (TE2)
– VMP Board –
IC301
BA7046F
1
2
3
4
8
7
6
5
H. OSC
H. OSC
HD
SYNC
VD
V. SEPA
SYNC
SEPA
PHASE
COMP
PHASE
COMP
VCC
VIDEO
GND
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