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SCHEMATIC DIAGRAM (MAIN) Preamplifier Section
CN480
R4110
12K
AUX_L
AUX-IN
AUX_R
R4210
12K
CN481
HP_L-CH
1
HP-L
A.GND
2
HP_R-CH
3
HP-R
+12V
HP_MUTE
4
HP_MUTE
HP_SW
5
HP_SW
+12V
6
+5.6V
7
+5.6V
TU-R
8
TU-R
A.GND
9
TU-L
10
TU-L
TU_DO
11
TU_DO
TU_CE
12
TU_CE
TU_DATA
13
TU_DI
TU_CLK
TU_CLK
14
RDS
15
TO CN202
TUNER PWB
DVD L-CH
DVD_L
DVD R-CH
DVD_R
12
11
10
A9V
REQUEST
REQUEST
DVD-MUTE
D-MUTE
DVD-CLOCK
DVD-CLK
DVD-DATA-OUT
DVD-DO
DVD-DATA-IN
DVD-DI
READY
READY
From LOADER BLOCK
CN482
W
1
SPD_W
V
2
SPD_V
U
3
SPD_U
H+
4
SPD_H+
U+
5
SPD_U+
U-
6
SPD_U-
V+
7
SPD_V+
V-
8
SPD_V-
W+
9
SPD_W+
W-
10
SPD_W-
H-
11
SPD_H-
4
3
SLED-
12
SLD-
IC473
SLED+
13
SLD+
PST3627UR
TW_MOTOR+
14
1
2
TW_MO+
TW_MOTOR-
15
TW_MO-
LIMIT_SW
16
M_*LSW
CLOSE_SW
17
F*CLS_SW
OPEN_SW
18
F*OPN_SW
+5.6V
19
D.GND
20
SELECTION
D.GND
21
L
W-KARAOKE
SEL_KARA
VOL_JOG
22
VOL_JOG
(3838_B)
H
W/O-KARAOKE
D.GND
23
+5.6V
L
VIDEO2
IR
24
IR
SEL_FUNC
(3838_C)
LCD_CE
25
L_CE
H
TV
LCD_CLK
26
L_CLK
LCD_DI
27
L_DI
LCD_DO
28
L_DO
EEP_CLK
R4766
EEP_SDA
4.7K
5
6
7
8
LCD_DO
1
IC471
L_DO
AT24C02N-10SI-2.7
LCD_DI
2
L_DI
4
3
2
1
LCD_CLK
3
L_CLK
LCD_CE
4
L_CE
IR
5
IR
D.GND
6
No Mounting at PP/MP
R4130
1K
L-IN
IC481
R-IN
LA2610
R4230
1K
9
8
7
6
5
4
3
2
1
R4133
C4130
L-IN
0
1/50
R4233
R-IN
0
C4230
1/50
L4700
10U
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
IC470
M38507M
MICON
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
X4700
8MHz
R4732
4.7K
Q4720
KTC3875
R4729
10K
No Mounting at PP/MP
- 48 -
C4802
C4803
100P
100P
9488_SDA
1
DI
CL
30
9488_SCL
C4835
0.01
2
CE
VDD
A9V
75342_CE
29
C4804
100P
C4801
3
VSS
VREF
28
22/50
4
TEST
NC
27
5
LOUT
ROUT
26
C4107
C4207
0.33
0.33
6
LBASS2
RBASS2
25
R4102
R4202
2.2K
2.2K
7
LBASS1
RBASS1
24
C4206
C4106
0.33
0.33
C4105
8
LTRE
RTRE
23
C4205
0.001
0.001
L_IN
9
LIN
RIN
22
R_IN
C4104
C4204
LSELO
RSELO
10/50
10/50
10
21
R4103
IC480
R4203
11
L4
R4
20
22K
22K
C4103
1/50
LC75342M
C4203
AUX_L
12
L3
R3
19
AUX_R
1/50
C4102
1/50
C4202
TU-L
13
L2
R2
18
TU-R
1/50
C4101
1/50
C4201
DVD_L
14
L1
R1
17
DVD_R
1/50
C4133
NC
NC
1/50
15
16
C4233
1/50
PRODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing. Components identified with the IEC
symbol
and
mark in the parts list and the schematic diagram designated components in which
! ! !
safety and performance can be of special significance. When replacing a component identified by
, use only the replacement parts designated, or parts with the same ratings of resistance, wattage or
voltage that are designated in the parts list in this manual. Leakage-current or resistance measurements
must be made to determine that exposed parts are acceptably insulated from the supply circuit before
returning the product to the customer.
+12V
A9V
+12V
+5.6V
D4700
1SS133
Q4956
KRC107S
Q4955
10K
KRC107S
47K
D4701
1SS133
10K
47K
+5.6V
5V
L4951
22
3.3V
5V
IC494
PQ070XZ01Z
5
1
DGND
R4957
2
4.7K
1
2
3
4
5
4
3
R4958
DGND
1K
DGND
1%
P
DGND
DGND
DGND
DGND
P
P
3.3V
-12V
DGND
DGND
2.5V
Q4957
KTA1504
R4970
47K
+12V
DGND
DGND
DGND
1.8V
FLASH UPDATE
DGND
5V
DGND
DGND
GND
Vpp
RESET
RXD
L/R-BUFFER
IC411
NJM4556AL
8
7
6
5
4
3
2
1
[CARBON 1/4W]
R4160
C4250
C4150
R4152
56
R4252
22P
22P
22K
22K
R4260
+12V
-12V
56
[CARBON 1/4W]
C4140
1/50
1K
R4155
C4240
R4255
1/50
1K
Q4250
Q4150
KTD1304
KTD1304
! ! !
and
MUTE
+5.6V
R4781
2.2K
+5.6V
IC472
HP_MUTE
PROTECT
KRX101U
R4782
2.2K
3
4
MUTE
PROTECT
10K
2
1
5
Q4792
47K
KRA107S
-12V
SP_RY
Q4791
KRC107S
Q4793
KRC107S
P_CON
10K
47K
Q4950
D4950
PR490
KTC3203
RGP10G
630
14
P
D4952
L4950
SB160
13
22
9V
8
7
1
P
IC490
STR-A6151
D4953
IC492
SB140
12
2
KA431AZTF
1
2
11
P
3
1
2
3
C4958
(M)
0.022
10
C4975
4
1/50
R4964
5
Q4953
10
PR491
D4954
KTA1271
630
RGP10G
9
8
R4900
D4902
10
1SS133
P
7
6
PC490
PC123Y22
This is a basic schematic diagram.
- 49 -
R4161
39
HP-L
R4261
39
HP-R
Q4251
Q4151
KTD1304
KTD1304
HP_MUTE
MUTE
CN483
ROUT
SPEAKER
OUTPUT
LOUT
MUTE
CN484
L4840
1000
MUTE
1
2
AMP_STB
AGND
3
L4841
1000
LED1
D6901
SECU4L01C*
AQUA_BLUE
LED2
D6902
SECU4E01C*
BLUE
To FRONT PWB
TW_LED1
VDD
TW_LED2
VDD
6
5
3
4
FU490
L4900
1A
WR490
BW
BL
WR491
P
AC230V
50Hz
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