Sharp LC-60LE810UN Service Manual - Page 43

Microcomputer software writing, Signal adjustment - backlight

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7. Microcomputer software writing LC-40/46/52/60LE810UN (1st Edition) 7.1. Main microcomputer/monitor microcomputer software writing (Main PWB: QPWBXF452WJZZ) Adjustment item Adjustment conditions 1 Main microcomputer/moni- Checker process tor microcomputer software writing File version check USB memory check Adjustment procedure 1. Connect the specified writing jig to SC8452 (TL8461-8475) via the checker. 2. Connect the USB memory to J3301 (TL3309-3312) or J3302 (TL3332-3335) via the checker. 3. Apply the specified voltage to the PWB and perform boot from the jig. 4. Send the software writing start command via RS232C. 5. Send the writing status check command and confirm the response of OK. Then turn off the power. CAUTION: When the USB memory is not inserted or reading error occurs, nothing is written. 7.2. Model/inch discrimination writing (Main PWB: QPWBXF452WJZZ) • Refer to the production precautions. 8. Signal adjustment 8.1. LCD section adjustment [LCD module adjustment] Adjustment item 1 Opposite bias adjustment (LCD module adjustment item) Adjustment conditions Adjustment in the center position of the panel Adjustment procedure 1. Enter the process mode using the process adjustment remote control. 2. Select [VCOM ADJ] using the Channel / keys on the remote control. 3. Press the Enter key to check that the pattern for adjustment is displayed. 4. Make adjustment so that the flicker located in the center of the screen is minimized using the Volume +/- keys on the remote control. 5. If the optimum condition is obtained in step 4, press the Enter key to turn off the pattern. CAUTION: * Make adjustment with no ANT signal (since the brightness is changed by the active backlight). [Adjustment position] 1/4 3/4 1/2 1/2 8.2. Image adjustment 8.2.1 Device check Before adjustment, check that the adjustment jig and signal source are set for Sharp LCD US. Signal generator level adjustment check (Adjust to the standard value level.) •Composite signal: •15K component signal: •33K component signal: •Analog RGB: Y level: PB/PR level: Y level: PB/PR level: RGB level: 0.714Vp-p ± 0.02Vp-p (Pedestal to white) 0.714Vp-p± 0.02Vp-p (Pedestal to white) 0.7Vp-p ± 0.02Vp-p 0.7Vp-p ± 0.02Vp-p (Pedestal to white) 0.7Vp-p ± 0.02Vp-p 0.7Vp-p ± 0.02Vp-p (Pedestal to white) 8.2.2 Process mode Adjustment point Process mode Adjustment conditions Adjustment procedure Enter the process adjustment mode using the process adjustment remote control. 5 - 9

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LC-40/46/52/60LE810UN (1st Edition)
5 – 9
7. Microcomputer software writing
7.1. Main microcomputer/monitor microcomputer software writing (Main PWB: QPWBXF452WJZZ)
7.2. Model/inch discrimination writing (Main PWB: QPWBXF452WJZZ)
•
Refer to the production precautions.
8. Signal adjustment
8.1. LCD section adjustment [LCD module adjustment]
8.2. Image adjustment
8.2.1 Device check
Before adjustment, check that the adjustment jig and signal source are set for Sharp LCD US.
Signal generator level adjustment check (Adjust to the standard value level.)
8.2.2 Process mode
Adjustment item
Adjustment conditions
Adjustment procedure
1
Main microcomputer/moni-
tor microcomputer software
writing
<Main PWB>
Checker process
File version check
USB memory check
1. Connect the specified writing jig to SC8452 (TL8461-8475) via the checker.
2. Connect the USB memory to J3301 (TL3309-3312) or J3302 (TL3332-3335)
via the checker.
3. Apply the specified voltage to the PWB and perform boot from the jig.
4. Send the software writing start command via RS232C.
5. Send the writing status check command and confirm the response of OK. Then
turn off the power.
CAUTION: When the USB memory is not inserted or reading error occurs, nothing
is written.
Adjustment item
Adjustment conditions
Adjustment procedure
1
Opposite bias adjustment
(LCD module adjustment
item)
Adjustment in the center
position of the panel
1. Enter the process mode using the process adjustment remote control.
2. Select [VCOM ADJ] using the Channel
/
keys on the remote control.
3. Press the Enter key to check that the pattern for adjustment is displayed.
4. Make adjustment so that the flicker located in the center of the screen is mini-
mized using the Volume +/- keys on the remote control.
5. If the optimum condition is obtained in step 4, press the Enter key to turn off the
pattern.
CAUTION: * Make adjustment with no ANT signal (since the brightness is
changed by the active backlight).
[Adjustment position]
•
Composite signal:
0.714Vp-p
±
0.02Vp-p (Pedestal to white)
•
15K component signal:
Y level:
0.714Vp-p
±
0.02Vp-p (Pedestal to white)
PB/PR level:
0.7Vp-p
±
0.02Vp-p
•
33K component signal:
Y level:
0.7Vp-p
±
0.02Vp-p (Pedestal to white)
PB/PR level:
0.7Vp-p
±
0.02Vp-p
•
Analog RGB:
RGB level:
0.7Vp-p
±
0.02Vp-p (Pedestal to white)
Adjustment point
Adjustment conditions
Adjustment procedure
Process mode
Enter the process adjustment mode using the process adjustment remote control.
1/4
3/4
1/2
1/2