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6-22. SCHEMATIC DIAGRAM – POWER Board –
CN902
11P
-22.5V
R1-GND
+22.5V
R2-GND
+14.2V(R2)
COM 8V
BACKUP4V
RELAY ON
AC DET
(Page 31)
DVD POWER CONT
FAN CONTROL
R903
4.7k
CN903
3P
CD8V
M-GND
(Page 33)
IC904
µPC3504AHF
O
I
G
+4V REGULATOR
C918
Q902
R904
10
2SC2785
47k
50V
POWER
C921
ON/OFF
4700
16V
RELAY DRIVE
C920
47
16V
R905
1k
D920
11ES2-TA1B
R902
1k
R907
1k
D922
11ES2-TA1B
R906
1k
IC901
L901
KIA7808API
D919
100µH
2A02M
O
I
G
+8V REGULATOR
T902
MAIN POWER
F906
TRANSFOMER
T2.5AL
250V
(SP)
(TH)
115V
F907
T2.5AL
230V
220V
250V
F903
T2.5AL
250V
COM
COM
F904
T2.5AL
250V
∗
NOT REPLACEABLE:
BUILT IN TRANSFORMER
T901
SUB POWER
TRANSFOMER
(SP)
(TH)
115V
230V
220V
COM
COM
C925
3300
25V
37
37
(EA)
124V
(EA,SP)
230V
F901
T1.6AL
250V
COM
(EA,SP)
-2
C901
S901
0.01
RY901
250V
VOLTAGE
SELECTOR
110V-120V
220V-240V
-1
JW915
(EA)
124V
(EA,SP)
230V
JW916
COM
(TH)
LF901
LINE
R901
FILTER
2.2
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
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.
HCD-M80
(TH)
JW920
CN901
2P
(AC IN)
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