GRUNDIG Service
Chassis KY
2 - 10
Chassisplatte – Netzteil / Chassis Board – Power Supply
C152
NC
R145
1K
C148
1nF
1
3
5
7
2
4
6
8
R144
47R
VCC3V3-ST
C153
1nF
+5V2_ST
Hi: ON
Lo: OFF
1
3
5
7
2
4
6
8
R151
10K
BL_CTRL
Hi: Off
Lo: On
PWM: Special aplications
BL_CTRL
PWM -100Hz/100KHz
Hi: Max Lum
Lo: Min Lum
VCC
GND
1
2
4
3
5
IC112
NC7SZ32
BRI_ADJ
BRI_ADJ
R148
NC
R143
100R
R149
1K
5
4
3
T103B
BC847BPDW1T1
2
6
1
T103A
BC847BPDW1T1
VCC
GND
1
2
4
3
5
IC111
NC7SZ32
TP26
VCC3V3-ST
R139
NC/10K
VCC3V3-ST
BL_CTRLX
BRI_ADJX
POWER_SWX
R142
NC/10K
VCC3V3-ST
4.7K
R141
R147
NC
R127
15.4k %1
R128
6.2K %1
TP15
60R
3A
L108
NC
C132
10uF
6.3V
VCC1V15
C135
1uF
C129 100nF
PG2
R129
4.7K
R126
2.0K
R126=2K-> 1.172V
+5V2_ST
VCC_DDR
60R
3A
L105
NC
MR_POW MR_POW
C121
10uF 35V
C130
10uF 35V
VCORE_FB
VCORE_FB
C131
10uF
6.3V
C133
10uF
6.3V
TP
16
C134
47nF
Power
VCC_AUDIO
C144
100nF
C146
100nF 50V
TP24
TP23
C143
10uF 10V
TP25
VCC_PANEL
VCC12V
P1
1
P2
2
P3
3
P4
4
P5
5
P6
6
P7
7
P8
8
P9
9
P10
10
P11
11
P12
12
P13
13
P14
14
P15
15
P16
16
P17
17
P18
18
P19
19
P20
20
P21
21
P22
22
P23
23
P24
24
GN
D
25
GN
D
26
S100
CON24+2
POWER_SWX
+5V2_ST
BL_CTRLX
BRI_ADJX
TP22
R135
NC
2
6
1
T100A
5
3
4
T100B
4.7K*4
R136
NC
R133
47K
R134
47K
R137
NC
R138
NC
VSENSE OPTION
VCC3V3-ST
GPIO_VID_1
GPIO_VID_0
GPIO_VID_1
GPIO_VID_0
VCC1V5
R119
6.2K %1
C124
10uF 6.3V
C125
10uF 6.3V
R116
100R
L106
3u3
Hi: ON
Lo: OFF
R114
6.2K %1
R113
0R
TP10
C122
100nF
VFB
1
VREG5
2
SS
3
GND
4
PG
5
EN
6
PGND1
7
PGND2
8
SW1
9
SW2
10
SW3
11
VBST
12
VIN1
13
VIN2
14
VCC
15
VO
16
EPAD
17
IC104
TPS54226ARGTR
C127
1uF
C128
2.2n
C126
NC
R118
10K
VCC3V3-ST
C103
10uF 25V
R107
1.8k %1
C104
10uF 6V3
R104
6.2k 1%
TP2
L100
R105
4.7K
0R
1/16W
R101
4.7K
C105
10uF 6V3
C106
10uF 6V3
R108
0R
L102
3u3
VCC3V3-ST
F101
TP5
C116
100nF
Hi: ON
Lo: OFF
C113
1uF 6V3
C112
2.2n
C100
100n
POWER_SW
3,4V R618 R621
6.2K 1.8k
C107
47p
D100
PMEG2020EH
VCC12V
XmA
60R
3A
L104
C147
100nF 50V
C149
100nF 50V
PG1
TP11
D101
PMEG2020EH
VCC12V
POWER_SW2 POWER_SW2
POWER_SW
XmA
R117
47K
R131
47K
VFB
1
VREG5
2
SS
3
GND
4
PG
5
EN
6
PGND1
7
PGND2
8
SW1
9
SW2
10
SW3
11
VBST
12
VIN1
13
VIN2
14
VCC
15
VO
16
EPAD
17
IC100
TPS54226ARGTR
4A
L115
30R
VCC12V
VCC_PANEL
VCC-CORE
VCC-CORE
TP8
PG2
R161
100R
PWR_SW3
VDDC_CPU
VCC1V17
60R
3A
L110
C160
10uF 35V
VCC1V17
C162
10uF
6.3V
C163
10uF
6.3V
NC
R163
100R
L114
3u3
Hi: ON
Lo: OFF
R100
6.2K %1
2K
R102
TP1
C161
100nF
VFB
1
VREG5
2
SS
3
GND
4
PG
5
EN
6
PGND1
7
PGND2
8
SW1
9
SW2
10
SW3
11
VBST
12
VIN1
13
VIN2
14
VCC
15
VO
16
EP
AD
17
IC105
TPS54226ARGTR
C167
1uF
C164
1400mA nom.
R165
15.4k %1
PG2
R164
100R
VCC-CORE
C165
47p
VFB
1
VREG5
2
SS
3
GND
4
PG
5
EN
6
PGND1
7
PGND2
8
SW1
9
SW2
10
SW3
11
VBST
12
VIN1
13
VIN2
14
VCC
15
VO
16
EPAD
17
IC107
TPS54226ARGTR
C166
47nF
L107
3u3
1900mA @ 100C Core Temp.
400mA nom.
650mA @ 100C Core Temp.
Vout=0.756x(1+ (R126+R128)/R127)
VCC3V3-ST
POWER_SW
POWER_SW
3
1
2
D107
BAT54CW
5
4
3
T105B
BC847BPDW1T1
2
6
1
T105A
BC847BPDW1T1
VCC5V
1
3
5
7
2
4
6
8
R140
10K
3D_EN
3D_EN
3
1
2
D106
BAT54CW
R172
NC
TP28
TP27
TP14
C173
NC
C174
NC
POWER_SW
+5V2_ST
4A
L113
1
2
4
3
7 8 9 10
Trigger
SW
VBST
EN
VO
VFB
GND
PGND
4
6
9
10
11
1
2
7
12
VIN
SS
VREG5
EN
Logic
UV
OV
Protection
Logic
Ref
SS
UV
OV
UVLO
UVLO
Softstart
SS
REF
TSD
Ref
VREG5
5
PG
13
8
VCC
3
VCC
+20%
-10%
Ref
VREG5
Control logic
1 shot
XCON
-30%
OCP
SW
PGND
ZC
SW
PGND
14
VREG5
TPS54226
1
2
3
4