Sanyo LCD-20CA1Z, Service Manual

Page: 26 / 26

N2KVZ
COMPONENT LOCATIONS
MAIN BOARD (Top)
MAIN BOARD (Bottom)
KEY BOARD (Top)
KEY BOARD (Bottom)
LED BOARD (Top) LED (Bottom)
Waveforms & Voltages
(On the Main Board)
Q202
B 4.3V
C 4.9V
E 4.9V
Q204
B 6.9V
C 8.4V
E 6.2V
Q205
B 1.5V
C 7.0V
E 0.9V
Q206
B 1.5V
C 7.1V
E 0.9V
IC204 (DC/DC)
Pin-1 1.5V 2 2.5V 3 3.3V 4 0V 5 3.1V 6 0.2V 7 GND 8 4.9V 9 0V 10 4.9V
11 0V 12 4.9V 13 0.2 14 4.9V
Q210
B 1.4V
C 6.9V
E 0.8V
Q201
B 0V
C 3.5V
E
0V
Q307
B 3.7V
C 8.7V
E 3.0V
Q302
B 2.3V
C 0V
E 2.9V
Q306
B 2.5V
C
0V
E 3.1V
IC204-pin5
OSD HD IN
IC202 (MEMORY)
Pin-1 GND 2 GND 3 GND 4 GND 5 4.9V 6 4.9V 7 GND 8 4.9V
Q301
B 3.7V
C 8.7V
E 3.1V
Q203
B 3.1V
C 0V
E 3.8V
Q209
B 3.7V
C 8.7V
E 3.1V
Q101
B 0.7V
C
0V
E 0V
Q207
B 0V
C 3.3V
E
0V
IC201 (CPU)
Pin-1 GND 2 0.1V 3 5.0V 4 4.9V 5 4.9 V 6 4.9V 7 0V 8 4.9V 9 0V
10 4.9V 11 4.9V 12 4.9V 13 0V 14 0V 15 2.3V 16 4.9V 17 4.9V 18 0.1V
19 0.1V 20 0.1V 21 0V 22 4.7V 23 4.7V 24 4.7V 25 0V 26 0.2V 27 0V
28 2.5V 29 5.0V 30 0V 31 2.1V 32 2.4V 33 4.9V 34 3.6V 35 4.9V 36 4.9V
37 4.6V 38 4.5V 39 0V 40 0V 41 0V 42 4.9V
IC101(REG.)
Pin-1 12.0V 2 5.0V 3 0V 4 5.0V 5 0V
IC102 (REG.)
Pin-1 0V 2 3.3V 3 5.0V
Q204-E
AUDIO
0.8Vp-p 1.4Vp-p Horiz.
Q203-B
VIDEO
0.8Vp-p
1.4Vp-p
Horiz.
IC301-pin22
VIDEO OUT
1.5Vp-p
3.2Vp-p
IC103 (REG.)
Pin-1 9.0V 2 0V 3 12.0V
IC104 (REG.)
Pin-1 5.0V 2 2.5V 3 0V
IC105 (REG.)
Pin-1 4.9V 2 0V 3 1.3V 4 1.5V 5 5.0V
IC106 (REG.)
Pin-1 4.9V 2 0V 3 1.2V 4 5.0V 5 5.0V
IC107 (REG.)
Pin-1 4.9V 2 0V 3 1.3V 4 1.5V 5 5.0V
IC302 (AUDIO AMP.)
Pin-1 5.1V 2 GND 3 5.1V 4 11.3V 5 5.8V 6 8.8V 7 2.0V 8 1.5V 9 GND
10 1.5V
IC205 (REG.)
Pin-1 12.0V 2 5.0V 3 0V
IC206 (REG.)
Pin-1 12.0V 2 5.0V 3 0V
IC301 (SWITCHING)
Pin-1 4.2V 2 4.1V 3 4.2V 4 4.2V 5 4.2 V 6 4.2V 7 4.2V 8 4.2V 9 4.2V
10 4.0V 11 4.2V 12 8.5V 13 4.6V 14 4.6V 15 0V 16 4.1V 17 4.1V 18 4.1V
19 0V 20 4.1V 21 3.5V 22 4.2V 23 4.3V 24 4.3V
IC303 (VIDEO SW)
Pin-1 2.7V 2 3.5V 3 2.6V 4 GND 5 2.7V 6 8.7V 7 1.9V 8 GND
IC704
Pin-1 3.3V 7 GND 8 1.6V 1 4 3.3V
IC705
Pin-1 3.3V 7 GND 8 1.6V 1 4 3.3V
Q102
Pin-1 11.8V 2 11.8V 3 11.8V 4 0V 5 11.7V 6 11.7V 7 11.7V 8 11.7V
Q303
B 3.7V
C 8.7V
E 3.0V
Q311
B 0.1V
C 5.7V
E
0V
Q212
B 7.1V
C 8.8V
E 6.5V
Q308
B 2.5V
C 0V
E 3.1V
Q213
B 7.1V
C 8.8V
E 6.4V
Q601
B 2.0V
C 2.5V
E 1.4V
Q305
B 3.7V
C 8.7V
E 3.0V
Q304
B 2.5V
C
0V
E 3.1V
1.4Vp-p Horiz.
Q301-B
Y SIGNAL
0.8Vp-p
1.4Vp-p Horiz.
Q302-B
Y SIGNAL
0.6Vp-p
1.4Vp-p Horiz.
Q303-E
C SIGNAL
0.8Vp-p
1.4Vp-p Horiz.
Q304-B
C SIGNAL
0.6Vp-p
Q212-E
AUDIO R
1.8Vp-p
Q213-E
AUDIO L
1.8Vp-p
1.4Vp-p Horiz.
Q209-E
VIDEO OUT
1.5Vp-p
IC301-pin1, 3
AUDIO (TV) IN
0.8Vp-p
1.4Vp-p
Horiz.
IC301-pin2
VIDEO (TV) IN
0.8Vp-p
IC301-pin16,17
AUDIO R/L OUT
0.4Vp-p
1.4Vp-p
Horiz.
IC301-pin18
Y-OUT
0.8Vp-p
1.4Vp-p
Horiz.
IC301-pin20
C-OUT
0.8Vp-p
IC301-pin23,24
AUDIO R/L OUT
0.8Vp-p
IC204-pin6
OSD HD OUT
5.0Vp-p
IC204-pin3
OSD VD IN
3.0Vp-p
IC204-pin4
OSD VD OUT
7.3Vp-p
IC302-pin1, 3
AUDIO L/R OUT
2.0Vp-p
IC302-pin8, 10
AUDIO L/R IN
0.1Vp-p
1.4Vp-p
Horiz.
IC601-pin85
Y-IN
0.6Vp-p
IC601-pin76
AV IN2-VD
3.2Vp-p
IC601-pin75
AV IN2-HD
3.2Vp-p
(On the LED Board)
Q208
B 2.8V
C 2.2V
E 2.1V
Q211
B 2.8V
C 0.3V
E 2.2V
Q210-B
AUDIO
0.5Vp-p
Q210-C
AUDIO
0.8Vp-p 1.4Vp-p Horiz.
Q203-E
VIDEO
0.8Vp-p
1.4Vp-p Horiz.
Q301-E
Y SIGNAL
0.8Vp-p
1.4Vp-p Horiz.
Q303-B
C SIGNAL
0.8Vp-p
1.4Vp-p Horiz.
Q304-E
C SIGNAL
0.6Vp-p
Q212-B
AUDIO R
1.8Vp-p
Q213-B
AUDIO L
1.8Vp-p
Q205-C
AUDIO L
1.4Vp-p
Q205-B
AUDIO L
0.8Vp-p
Q205-E
AUDIO L
0.8Vp-p
Q206-C
AUDIO R
1.4Vp-p
Q206-B
AUDIO R
0.8Vp-p
Q206-E
AUDIO R
0.8Vp-p
1.4Vp-p Horiz.
Q209-B
VIDEO OUT
1.5Vp-p