Adjustment Method - Sharp DV-L70U Service Manual

6. ADJUSTMENT METHOD

6-1. HARNESS LIST FOR SERVICE PARTS
Parts Code Price Code
QCNW-8145GEZZ AQ
QCNW-8146GEZZ AQ
QCNW-8147GEZZ AN
QCNW-8148GEZZ AM
QCNW-8149GEZZ AQ
QCNW-8150GEZZ AQ
Drawing for service jigs
Mechanism
Power
supply PWB
6-2. ADJUSTMENT PROCEDURE AND METHOD OF LCD PWB SIDE
1. 7.5V adjustment
Adjustment VR R1102
Adjustment Point Put a voltmeter between 6PIN (+7.5V) and 4PIN (GND) of TP1191.
Input Signal/Setting No input
Adjustment Method Adjust it to 7.50±0.02V.
2. Free run adjustment
Adjustment VR R1104
Adjustment Point Observe the 3PIN of TP1191 with a frequency counter.
Input Signal/Setting No input, external input mode
Adjustment Method Adjust it so as to get the HSY frequency of 15.735±0.01KHz
(63.554µS).
3. Screen center adjustment
Adjustment VR R1103
Adjustment Point Visual observation of the panel
Input Signal/Setting Monoscope full screen
Adjustment Method Adjust the screen so that it is located in the center.
Remarks
P.U. extension, 30-pin
Spindle extension, 13-pin
Sled extension, 2-pin
Power supply extension, 14-pin QCNW-1766TAZZ
Main LCD extension, 14-pin
Main LCD extension, 14-pin
Inverter junction PWB
QCNW-1766TAZZ
Inverter
QCNW-8151GEZZ
Pickup junction PWB
QPWBF5003GEZZ
Pickup
QCNW-8145GEZZ
FFC
MA QCNW-8146GEZZ
FFC spindle
Lead wire
QCNW-8147GEZZ
Sled
PA
FFC
Power supply, 14-pole
QCNW-8148GEZZ
Parts Code Price Code
QCNW-8151GEZZ AQ
QCNW-8152GEZZ AQ
QCNW-8154GEZZ AQ
BF
QPWBF5002GEZZ BF
QPWBF5003GEZZ BF
Inverter PWB
Panel
LCD junction PWB
QPWBF5002GEZZ
F F
LCD junction
F F
QCNW-8152GEZZ
C C
LB LA
LCD PWB
LC
LCD
QCNW-8150GEZZ
Lead wire
QCNW-8149GEZZ
AB
CN301
AA
AC
Main PWB
CN302
AD
AE
QCNW-8154GEZZ
6-1
DV-L70U
Remarks
Inverter extension, 6-pin
LCD panel extension, 32-pin
Operation PWB extension, 12-pin
Inverter junction PWB
LCD junction PWB
Pickup junction PWB
Operation cabinet
HSY
15.735KHz
(63.554µS)