Service manual

-46-
Chassis Block Diagrams
S_SW
S_SW
PC1/PC2_SW
POWER
LAMP BALLAST
LAMP COVER
IC5031
AUDIO-OUT
<LM4889>
IC5001
AUDIO-CONTOL
<NJW1141>
IC5201
PC1/PC2-SW
<AN5870>
RC RECEIVER
POWER SUPPLY
SW901 LAMP COVER SWITCH
P.F. CONTROL
S-VIDEO
SP901
SPEAKER
MUTE
LAMPDC_ON
RC
MAIN
Q6842
FAN_CON_A
FAN_CON_B
IC3501
D/A
<M62334>
1 2
R/C
13
4
ON:H ON:H ON:H ON:H
ERROR:H
P-ON:H
PC1:L
P.Fail:L
7,8
10
2 1
26
1
Mute On:H
Mute On:H Power On:H Power On:H
Power On:H Power On:H Power On:H
Power On:L
Power On:H
L/R
VOLUME
267 345
PWR_LED
BLAST_AC
BALAST_AC
FAN_ERR
LAMPREP_LED
ON_3.3V
ON_150V
346 413 269 11 344
FAN_SW2
CABLE_SW
WARNING_LED
ON_5VA
363 182 184
DDC_SW3
1
DDC_SW1
101 110
P_FAIL P_FAIL
FAN_SW1
FAN_SW2
FAN_SW1
LAMPDC_ON
DC_ON
READY_LED
215
P.Fail:L
P_FAIL_FAN P_FAIL_FAN
370
285 89 201 91
CHO_TXD
CHO_RXD
CHO_TXD
CHO_RXD
MUTE
KEY1
295 26 92 28
KEY2
126
KEY3
IRRCVR0
SCL0_5V/SDA0_5V
SCL0_5V/SDA0_5V
216
IRRCVR0
214 290,208 212,293
IC301
SCALER <PW190>
Q6844 Q6843
D6832
D6831
D6833
Q5036
OUT_DET
Mute On:H
Q5034
Q6841
WARNING
LAMP REPLACE
READY
IC4891
NAND
2
13
1 10
IC9882
INVERTER
K8R
K8F
K6R
11
K8S
3 1
K8H
4 5 1
K8D K29D
3
S5V
FAN
CONTROL
CIRCUIT
FAN_CON_C
3
KEY SWITCH
SCL0_5V/SDA0_5V
IC891
INVERTER
<MH74LVC>
System control