SERVICE MANUAL LC-XB41 - TechEdu.com
SERVICE MANUAL LC-XB41 - TechEdu.com
SERVICE MANUAL LC-XB41 - TechEdu.com
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Chassis Block Diagrams<br />
Power supply & protection circuit<br />
K6AC<br />
K6AB<br />
LINE FILTER<br />
BOARD<br />
K6A<br />
CJ1<br />
LAMP COVER<br />
SWITCH<br />
SW901<br />
LAMP<br />
BALLAST<br />
CJ2<br />
Q3582<br />
5 4<br />
6<br />
K6R<br />
D3601<br />
S5V<br />
IC5601 S6V<br />
D3602<br />
3.3V IC5631<br />
1<br />
5<br />
4<br />
8<br />
2<br />
3<br />
9<br />
11<br />
7<br />
8<br />
10<br />
D3606<br />
ON_3.3V<br />
5V_AUDIO IC5081<br />
D3608<br />
ON_5VA<br />
S3.3V_AD IC161<br />
IC601<br />
P.F.CONTROL<br />
<br />
1<br />
POWER<br />
1 3<br />
T651<br />
D681<br />
D682<br />
D653<br />
PC601<br />
Q681<br />
IC681<br />
ERROR<br />
AMP<br />
Power-On:H<br />
1 5 4<br />
K8S<br />
K8H<br />
P-Fail:H<br />
4<br />
LAMP_SW<br />
(Power-On:L)<br />
LAMP_DET<br />
(Power-On:L)<br />
10<br />
1<br />
PC603<br />
IC651<br />
POWER OSC.<br />
<br />
Feedback<br />
5VA<br />
16V<br />
S6V<br />
-5V<br />
LAMPDC_ON<br />
ON_150V<br />
IC4891<br />
NAND<br />
1 2<br />
5 6<br />
9<br />
S6V<br />
S-5V<br />
D3603,D3604<br />
1.2V<br />
2<br />
1<br />
IC9882<br />
INVERTER<br />
2 13<br />
BLAST_AC<br />
FAN_ERR<br />
26<br />
CHO_RXD<br />
D3618/3619/3620<br />
1.5V<br />
CHO_TXD<br />
295<br />
P-Fail:L<br />
215<br />
P_FAIL<br />
P-Fail:L<br />
215<br />
P_FAIL_FAN<br />
Power-On:H<br />
201<br />
DC_ON<br />
IC491<br />
IC8291<br />
11<br />
D3611<br />
D3612<br />
12V IC5641 S15.5V<br />
DDC<br />
D3613<br />
FAN_A Q7812<br />
S3.3VPW Q5821<br />
S2.5VPW Q5841<br />
S2.6V_PW IC5681<br />
Power-On:H<br />
89<br />
IC5801<br />
DC-DC<br />
IC5642<br />
Q7813<br />
FAN_CON_A<br />
IC7811<br />
D3614<br />
FAN_B Q7862<br />
Q7864<br />
FAN_CON_B<br />
IC7861<br />
D3644<br />
FAN_C Q7842<br />
Q7844<br />
FAN_CON_C<br />
IC7841<br />
D3201<br />
15.5V_PNL 15.5V<br />
Q2501<br />
Q2502<br />
ON_5VA<br />
ON_3.3V<br />
Q3581<br />
5VA<br />
K6AA<br />
P_FAIL<br />
P_FAIL_FAN<br />
9V<br />
LAMPDC_ON<br />
Q5861<br />
S1.8VPW<br />
Power-On:H<br />
BLAST_AC<br />
413<br />
Power-On:H<br />
11<br />
ON_3.3V<br />
Power-On:H<br />
344<br />
ON_150V<br />
Power-On:H<br />
110<br />
IC44831<br />
TEMP. SENSOR1<br />
<br />
IC8821<br />
TEMP. SENSOR2<br />
<br />
IC8811<br />
TEMP. SENSOR3<br />
<br />
ON_5VA<br />
212,293 SCL0_5V<br />
SDA0_5V<br />
MAIN<br />
LAMP PANEL OUTSIDE<br />
TEMP<br />
AC CORD<br />
LAMP<br />
IC301<br />
SCALER<br />
<br />
-49-
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