Panasonic PV-D4742 Service Manual page 122

MAIN IV (Hi-Fi) SCHEMATIC DIAGRAM
REC AUDIO SIGNAL
TO M II
81 HIFI_R_OUT_2
TO M II 82 HIFI_L_OUT_2
TO M II 77 HIFI_R_OUT
TO M II
79 HIFI_L_OUT
TO M II
71 HIFI_MIX_OUT
TO M II
67 HIFI_NOR_OUT
TO M II
68 HIFI_NOR_IN
R4230
33K
TO M II
72 DVD_AUDIO_R
C4236
PT
R4229
33K
TO M II 73 DVD_AUDIO_L
C4235
PT
PB AUDIO SIGNAL
TP4210
C4243 C4244 R4235 R4236
PT R4234
PT PT 22K
22K
1K
TP4209
PT R4233
1K
D4211 D4212
PT PT
D4213 D4214
PT PT
Q4007 Q4008
UN5215 UN5215
SWITCHING SWITCHING
MUTE-ON MUTE-ON
TP4202
R4214
C4225 C4226 R4213
PT R4210
PT PT 22K 22K
1K
TP4201
PT R4209
1K
Q4005 Q4006
UN5215 UN5215
SWITCHING SWITCHING
MUTE-ON MUTE-ON
C4238 R4232
PT 3300
C4237 R4231
PT 3300
L4303
100U
C4320
10/25V
C4019
PT
C4242
10/16V
C4241
10/16V
16 15 14 13
VDD
H
Q4004
UN5115
(DRIVE)
H L
H L
1 2 3 4
IC4304
BU4053BCF
(SW)
J4305
C4210
PT
10/16V
C4209 J4306
10/16V PT
R4218
1K
Q4009
UN5215
SWITCHING
MUTE-ON
C4317
10/25V
R4317
R4316
10K
10K
C4319
8 7 6 5
0.01
VDD
IC4303
UPC4570G
(OP AMP)
GND
1 2 3 4
C4318
R4319
10K 10/25V
R4320
10K
12 11 10 9
L
Q4304
UN2212
(SWITCHING)
R4321
E VEE VSS
100K
5 6 7 8
R4322
100K
R4323 100K
R4324 100K
C4323 C4326
C4324 C4325
10/25V 10/25V 10/25V
10/25V
R4302
PT
L4302
IC4302 PT
PT
(OP AMP)
1 VDD 8
2 7
C4314 C4313
PT PT
3 6
R-CH
4 GND 5
L-CH
R4311
PT
Q4303
PT
SWITCHING
MUTE-ON
R4327
4700
Q4305
2SD601A
C4322
R4325 R4326 C4321
4700 5600 0.01 10/25V
J4302 WA5
J4301 WA7.5
6V 6V
C4245 C4246 C4301 J4303 C4302
PT PT PT PT
PT
R4303 R4305 R43
PT PT PT
IC4301 PT
(OUTPUT SELECT)
R4301
PT
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
H:VCR
L:DVD
Q4302
PT
SWITCHING
MUTE-ON
R4312
PT
107