Sharp HT-DP2500W Service Manual page 21

SW1
ON STAND-BY
3
34 35 36 37 38
SWITCH PWB-C5
TIMER ON:( )
Q10 TIMER LED
KRC102 M
LED2
L1154HDB
0.8V(–2.1V) 5V(0V)
3 2
R42
1K
0V 1
R41
1K
PROTECT
R40
1K
5 54 53 52 51
HEADPHONE USE:( )
0V
50
0V(5V)
B) 49
SPSWA
R38
4.8V
NC(SW_RLAY)
48
1K
4.8V
NC(C_RLAY) 47
4.8V
NC(R_RLAY)
46
0V
R33
45
NC
1K
4.6V
POW_SW
44
4.8V
FA_RLAY 43 R31
1K
4.8V
SW_MUTE 42
0V R30
41
C_MUTE
1K
4.8V
R29
R_MUTE
40
1K
4.8V
R28
39
F_MUTE
1K
4.8V
R27
JOG_DOWN 38
1K
4.8V
R26
R
JOG_UP 37
1K
5.1V
R25
REMOCON
36
1K
0.2V
AC3_SO 35 R23
1K
5V
SYS_STOP
34
5.3V R22
POWER
33
A
1K
0V
R21
32
STB)
V_DATA
1K
0V
R20
3 1
V_CK
1K
0V
V_LATCH 30
R19
0V
NC(FS_CK)
29
1K
0V
28
0V
27
R15
5V 1K
26
1 22 23 24 25
0V
R14
1K
C2
0.022
R66
R65
10K
10K
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
7
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1 1 1
C20
2 2 2
0.47/50
3 3 3
4 4 4
C11
0.001
C
STAND-BY LED
SW23
JOG
R169
LED1
DIAL
1K
L1154HDB
B
C10
0.001
Q11
KTC3199 GR
0V
R157
10K
R158
22K
D7
1N4148
R88 R90
47K 47K
5V BACK UP
D6
1N4148
R138
1K
Q13
R139
KRC102 M
5.1V
0V (0V)
3
2
1 0V
C6
22/50
BI4
CNS4
CNP4 TO POWER A PWB
P15 7-H
8 9
Figure 17 SCHEMATIC DIAGRAM (6/7)
R120 R121
R122
1.8K
1.8K 2.7K
KEY1
SW2 SW3 SW4
DOLBY
TIMER EQUALIZER X-BASS
/SLEEP PROLOGIC
KEY2
R127
R126 R128
1.8K 1.8K
2.7K
SW12
SW9 SW10 SW11
TUNING
MEMORY TUNING TUNER
/SET DOWN (BAND)
UP
A
VR1
50K(B)
SUB-WOOFER
VOLUME
0V
Q12
KRC102 M
R156
4.7K 3
2
0V
0V
1
Q4
3
2 1
IC1 42 IC1
BYPASS 0V 0V 0V
4.8V
0V 0V 4.8V
WIDE NORMAL 4.8V
PHANTOM 0V 0V 0V
4.5V
Q4
KRA102 M
3
1
R142
1K
RESET
Q6
R143
KRC102 M C14
R144
3.3/50 10K
10K
3
2
5V 0V
0.2V
Q7
1K
1
KTC3199 GR
0.2V
Q8
KTC3199 GR
R145 R147
82
10
– 17 –
HT-DP2500W
R123 R124
R125
3.9K 5.6K 10K
SW5 SW6 SW7 SW8
ENTER VOLUME VOLUME
DOWN UP
R129 R130 R131
3.9K 5.6K 10K
SW13 SW14 SW15
CD/AUX VCR-1
VCR-2
1
2
3
FUN_SW
PROTECT
SPSWA
Q3 Q2 Q1
3 3 3
2 1 2 1 2 1
41 IC1 40 IC1 39
0V 0V 0V
5V 0V 0V 5V
4.8V
0V
0V 4.8V 0V 0V 4.5V 0V 0V
5V 0V 0V 0V
0V 4.8V 0V 4.8V
R154
SW_MUTE
2
1K
Q3
KRA102 M
R153
1K C_MUTE
2
Q2
3
KRA102 M
R152
1
R_MUTE
2 1K
3
R151
1 F_MUTE
2 1K
3
Q1
1
KRA102 M
V_DATA
V_CK
V_LATCH
POSISTOR
SP_LEVEL
D3
1N4148
ZD1
D4
1N4148
MTZJ3.9B
RX1
REMOTE
SENSOR
1 2 3
1.0V
5.1V
1K
11 12
TO MAIN PWB
P13 12-G
CNP5
CNS5
1
2
3