Sanyo PLC-XU301, Service Manual

Page: 52 / 112

-5-
Chassis Block Diagrams
POWER
LAMP BALLAST
IC001
A
U
DI
O
-OUT
<TP
A3123>
IC5001
A
U
DI
O
-C
O
NT
OL
<NJW1156
>
R
C
RECEIVER
POWER SUPPL
Y
SW901 LAMP C
O
VE
R
SWIT
CH
P.
F.
C
ONTROL
SP901
SPEAKER
MUTE
LAMPDC_ON
R
C
A2901
M
A
IN
IC9882
INVERTER
<HD74LVC14T>
3
4
ON:H ON:H ON:H
ERROR:H
P
-ON:H
P.
Fail:L
ON:H
6
2 1
4
M
u
te
O
n
:H
M
u
te
O
n
:H
Po
wer On:H
P
o
wer On:L
L/R
VOL
UME
POWER_LED
BLAST_A
C
BLAST_A
C
FAN_ERR
TEMP_LED
353
284
276
LAMP_DE
T
285
275
REA
D
Y
_LED
P_F
AI
L
215
FAN_SW1
FAN_SW1
190
P
o
wer On:H
LAMP_DC_ON
89 99
CHO_T
XD
CHO_RXD
CHO_
T
X
D
CHO_RXD
MUTE
KEY1
295 26
344 28
KEY2
126
POW_KE
Y
R/C_PW
SCL1/SD
A1
SCL2/S
D
A
2
188 214
RXD_PW
386
T
XD_PW
124
211,294
SCL0/SD
A0
293,212 290,208
FAN_C
ON_A
30
FAN_C
ON_B
128
IC301
SYSTEM CONTROL
D6835
Q5035
ON:H
LAMP_LED
D6833, D6831
Q6846
Q6845
LAMP REPL
A
C
E
W
A
RNIN
G
POWER
IC4891 NAND
2
13
1 10
IC9882
INVERTER
2
K6R
K8S
3 1
K8H
4 5 1
K8D
K29D
3
S3.3
V
FA
N
C
ONTROL CIRCUIT
KEY SWIT
CH
SCL2_5V/SD
A2_5V
9
K8F
1 3
LAMP_DE
T
FAN_C
ON_C
373
PW_LAN_IO
W
60
PW_LAN_IO
R
243
PW_LAN_CS
59
PW_LAN_IN
T
242
LAN-RESTE
347
IC9885 U
A
R
T
PW_UPD
A
T
E
296
PW_NMCL
R
205
PW_N
E
T
_H/
L
95
P_F
AIL_LA
N
370
IC8801
L
A
N
C
ontrol
POWER_ON-LA
N
183
K40B C
o
n
tr
o
l
P
o
rt
Q5752
3.3V_LAN TPIN
+
TPIN
-
TPOUT
+
TPOUT
-
LED_A LED_B
RJ4
5
SIDEN
277
S
C
R
T
269
SIRST
90
SIIN
T
154
IC8001
DVI-RECEIVER SII9127A
C
T
UM
System control