BenQ PB6100 Service Manual page 106

A
TP240
J702 L714
1
1
4 TP241
2
2
TP242
3
3
TP243
4
4
80 OHM
TP244
5
5
80 OHM
TP245
6
6
80 OHM
7
7
8
8
20D0038108
GND
3
U3
LD1117-3.3V
3 2
VIN VOUT
4
VO
VDD_D U4
LD1117-3.3V
3 2
VIN VOUT
2
4
VO
C8
0.1U
25V Z
3.3V_D
UL1
1 74AHC1G08
RESETZ
1
RESETZ
4
LAMPEN
2
LAMPEN
A
B
V12_D
V12_D
80 OHM C828
+
C824 10U M
0.1U K 20V
L710 2V5_D
2V5_D
L711
L712 C829 C826
+
22U
0.1U K
6.3V
VDD_D
L744
VDD_D
80 OHM
VDD
L713
VDD
80 OHM
C821 C827 C820 C823
+ +
10U M
10U M 0.1U K 0.1U K
20V 20V
3.3V
3.3V
3.3V for main board
CP3
+
10U M
6.3V
3.3V_D
3.3V_D
3.3V for DDP1000
C9
0.1U
25V Z
Generate 10mA and 0 mA to
ballast lamp sync signal
LAMP-SYNC
L: Lamp on
H: Lamp off
R11
100
Q6
R12 2K
1
MMBT2222A
B
C
TP246
J704
TP248
LAMP-SYNC
1
LMAPLIT
2
TP249
3
TP250
4
TP251
5
TP252
6
7
8
R711
20D0049108
L: ECO-MODE
H: Normal
OPEN
UC2
1
NC
SCL
2
SCL SCL0
SDA
3
SDA
SDA0
4
GND
PCA9515DP
R735
R734
LAMPLITZ connected to NPN collection pin
and R6 change to 0 ohm
74AHC1G08
LAMPLITZ
4
LAMPLITZ
L: Lamp on
H: Lamp off
To repair lamp light detect signal from ballast before send to DDP1000 and main board.
C
D
TP247
LAMP-SYNC
LAMPLIT
SCL_F R783 R784
SCL_F
SDA_F 10K 10K
SDA_F
FAN_P OPEN OPEN
FAN_P
270
VDD
Q706
1
ECO-MODE
2N3904
VDD
3.3V
RC3 RC4
CP8 10K 10K
0.1U
8
VCC
SCL_F
7
SCL_F
SCL1
SDA_F
6
SDA_F
SDA1
5
EN
0
0
3.3V
VDD
CP1
R5
0.1U
100KF
U52
L: Lamp on
H: Lamp off
1
LAMPLIT
2 3 2
LAMPLIT
MMBT2222A
Q1
R7 Q4_C
1M
C7
+
22U
25V
Benq Corporation
Project Code Model Name
99.J8677.001 PB6100
Title
MAIN BOARD
Size PCB Rev.
PCB P/N
<Size>
48.J8601.S04 S04
Tuesday, October 07, 2003
Date:
Prepared By Reviewed By
ANGEL HU DAVID HN LIN
D
E
4
3
2
OEM/ODM Model Name
<OEM/ODM>
1
Document Number R ev.
1
99.J8677.B12-C3-304-004
Sheet 4 o f 20
Approved By
KELVIN LIAO
E