Grundig XEPHIA 42 PW 110-5501 TOP, Service Manual

Page: 22 / 64

GR
UNDIG Ser
vice
Chassis P7
2 -
7
Spannungsversorgung / Power Supply
8
GND
L8
L10
L11
100uH
100uH
100uH L13
1
2
3
4
5
6
7
JP450
10uH L4
1
2
S7
10K
*
R453
10K
*
R454
STAND_BY
SOT23
BC848B
Q450
100N *
C455
GND GND
1
2
S3
1K
R27
C228
GND GND
TP470
GND
OUT 2 VCC
3
1
GND
D-PACK
U458
+5V_STBY
100U16V
C483
100U16V
C484
100N
*
C461
100N *
C460
GND
1N4148
D450
+2.5V_STBY
+33V_IF
100N *
C459
TP473
100U
50V
C42
+3.3V_STBY
100U16V
C485
100U16V
C486
100N
*
C464
100N
*
C463
GND
+1.5V_STBY
1K
R
45
9
1K
R460
GND
TP478
IN
3
1
OUT
2
ADJ
D-PACK U450
10U50V
C478
100N
*
C4 54
100N *
C453
GND
+12V_AMP +8V
270R
*
R467
680R *
R13
IN
3
1
OUT 2
ADJ
D-PACK U456
+5V
OUT
2
VCC
3
1
GND
D-PACK
U457
100U16V
C481
100U16V
C482
100N
*
C457
100N
*
C458
+5V
GND
TP471
1K
R14
1K
R15
+3.3V
BL_ON/OFF
4K7
*
R1018
4K7
*
R1019
*
R1017
BC848
Q1000
GND
1
2
3
4
5
6
7
JP452
GND
ANALOG_DIM
DIGITAL DIM_OUT
A/D_DIM_SELECT
TP472
TP474
TP476
TP475
A
+5V
100N
C450
GND GND
100U50V
C487
TP462
100N
C452
GND GND
100U50V
C480