Service manual
Schematic Diagrams
LCD CON & LCD VCC B - 9
B.Schematic Diagrams
LCD CON & LCD VCC
Sheet 8 of 45
LCD CON & LCD
VCC
PLVDD
+VDD3
+5VS
+3VS
+3VS
+3VS
+5VS
EVDDID
PLVDD
+12V
+12V
+3VS 2, 4, 9, 10, 11,1 2,13,14,16,18,19,22,23,24,25,28 ,29,32, 33,35,3 6
LVDS_UN2 36
LVDS_UP1 36
LVDS_UN1 36
LVDS_UCLKP 36
LVDS _UCLKN 36
LVDS_UP2 36
LVDS_UP3 36
LVDS_UN3 36
LVDS_LN3 36
LVDS_LN1 36
LVDS_LP1 36
LVDS_LP0 36
LVDS_LCLKN 36
LVDS_LP2 36
LVDS_LN0 36
LVDS_UN0 36
LVDS_LN2 36
LVDS_UP0 36
LVDS_LCLKP 36
LVDS_LP3 36
ENAVDD36
+5VS 11, 14, 16, 19,22, 23, 26, 28, 29, 30, 33,34,35,36
LCD_ID1 13,36
PANEL_I D1 13, 36
LCD_ID0 13,36
PANEL_I D0 13, 36
LCD_ID2 13,36
PANEL_I D2 13, 36
+12V 20, 21,23, 26,28, 29, 30, 32
+VDD 3 4,13,16,19, 23, 29, 30, 31
LVDSLP1
LVDSLN 1
LVDSLP0
LVDSLN 0
LVDSLCLKP
LVDSLCLKN
LVDSLP2
LVDSLN 2
LVDSUP0
LVDSUN0
LVDSLP3
LVDSLN 3
LVDSUP2
LVDSUN2
LVDSUP1
LVDSUN1
LVDSUP3
LVDSUN3
LVDSUCLKP
LVDSUCLKN
Z080 6
ENCTL
LVDSU N3
LVDSU CLKP
LVDSU P2
LVDSU CLKN
LVDSU N2
LVDSU P3
Z0805
LVDSU N1
LVDSU P1
LVDSU N0
LVDSU P0
LVDSLN 3
LVDSLP3
LVDSLC LKN
LVDSLC LKP
LVDSLN 2
LVDSLP2
LVDSLP1
LVDSLN 1
LVDSLN 0
LVDSLP0
Z0803
Z0804
Z08 12 Z08 13
Z0808
Z0809
Z0810
Z0811
Z0802
Z0801
Z0807
C41
10U_1206
C552
0.1U
C545
10U _1206
CP2
8P4CX10PF
1
2
3
4 5
6
7
8
RP3
8P4RX0
81
72
6
5
3
4
R773
330K
JP5 *OPEN
1 2
JP6
*OPEN
1 2
RP2
8P4RX0
81
72
6
5
3
4
C550
0. 1U
+
C47
*100U_6. 3V_7343
12
RP1
8P4RX0
81
72
6
5
3
4
C46
0.1U
L50
L_1 206( 162)
1 2
JLCD1
CON40_LCD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
JP8
*OPEN
1 2
R20
0
R15
100_0805
Q2
2N7 002
G
DS
Q94
2N7002
G
DS
Q4
2N7002
G
DS
RP5
8P4RX0
81
72
6
5
3
4
R774
10K
CP1
8P4CX10PF
1
2
3
4 5
6
7
8
Q92
AO4433
4
62
5
73
1
8
R17
1M
RP4
8P4RX0
81
72
6
5
3
4
T64 0
T639
JP4 *OPEN
12
C910
0.1U
C866
10U_1206
L13
*L_0805(159)
JP7
OPEN
1 2
C49
*0.1U
RP9
8P4RX10K
81
72
6
5
3
4
CP3
8P4CX10PF
1
2
3
4 5
6
7
8
JP1 OPEN
1 2
JP2 *OPEN
1 2
CP5
8P4CX10PF
1
2
3
4 5
6
7
8
JP3 OPEN
1 2
C544
0.1U
CP4
8P4CX10PF
1
2
3
4 5
6
7
8
LCD Vcc Power trace >= 60mil
Note: Check 20" panel signal.
LCD Vcc Power trace >= 60mil
3.3V@1130mA
NEW PARTS
94/9/15
Rubband
94/9/15
Rub ba n d
1 0 0 ==> LG 17" LP171WU1(WUXGA)
0 1 1 ==> Sam sung 17" LTN170WU-L01(WUXGA)
0 1 0 ==> Sam sung 19" LTN190W-L01(WSXGA+)
1 1 1 ==> LG 17.1" LP171W01( WXGA)
1 0 1 ==> AUO 17" B170PW01(WXGA)
PANEL_ID
1 1 0 ==> LG 17.1" LP171W02(WSXGA+)
Del L12(L_0805).
94/9/26
Rubband
94/9/28
R15 change to 100 ohm
R17 change to 1M ohm
Add C910 0.1U
Rub ban d
0 0 1==> LG 20"
94/10/31 Kevin