Service manual

Page 58 of 64
Title
Number RevisionSize
A3
2
1
7
8
U26A
IRF7314
4
3
5
6
U26B
IRF7314
RC3
3.3K
Q3
T3904
RC4
3.3K
CF6
0.1uF
V12 V12
RC5
3.3K
CF4
0.1uF
RC6
3.3K
Q4
T3904
VCC VCC
1
3
2
4
J19
LCDPWR
CF7
0.1uF
CF5
0.1uF
LCDON
BKLON
PWMOUT
AUX5V
AUXV12
BRIGHT
+
-
5
6
7
84
U28B
LM358_SO8
+
-
3
2
1
84
U28A
LM358_SO8
LCD5V
AUX5V
RC8
10K
RC11
10K
RC12
10K
RC13
1K
RC10
10K
RC9
10K
RC7
10K
CF8
0.1uF
C128
0.1uF
1
2
3
4
5
J23
HEADER 5
BKLON
PWMOUT
LCDON
U28 bypass cap
AUX5V
CF2
0.1uF
V0.01
LCD CTL AND PDC
Nano-1
OTPV ,INC. DTC
9
11
J20 is the I2C debug port
V3.3
RE2 100
RE1 100
1
2
3
4
J20
I2C USE
SDA
SCL
SDA
SCL
J23 is to connect with backlight board,
J19 is to connect with the LCD panel.
The power supply summary:
+12 is 12V power for LCD panel,
VVV is 5V standby power for the board,
VUU is 3.3V standard power for the board,
VDD is 3.3V power for U40, etc.
VOO is 3.3V LVDS power for U40,
VNN is 3.3V PLL power for U22.
SCL
10
SDA
9
OSC1
6
OSC2
7
P1.7
2
P1.6
3
P1.1
11
DQ0
1
DQ1
20
DQ2
19
DQ3
18
DQ4
17
DQ5
16
DQ6
14
DQ7
13
DSN
8
W
12
RST
4
GND
5
VCC
15
U55
87LPC764BD
PDC-ON
RST1#
I2C-REQ
X4
4MHz
RL7
100
CL2 15pF
CL4 15pF
PDC-5V
CL3
0.1uF
RL8
100
PDC-ON
RST1#
I2C-REQ
RL9
0
RL10
0
KEY6
IRRCV
CL7
47uF
LED2
RL12
0
PDC-5V
RESIN
RESIN
SCL
SDA
SCL
SDA
RESET
RESET
12
34
56
JP4
HEADER 3X2
VDDp
RESIN
VPP
RESIN
KEY6
IRRCV
LED2
VDDp
P-CLK
P-DATA
VPP VDDp
1
2
3
4
5
J47
CON5
PROGRAMER
USE JUMPER
KEY2
KEY3
1
2
3
4
P901
4 HEADER
PDC-5V
PDC-ON
RL11
10K_NS