Sharp LC-60E77UN Service Manual page 41

10. Key writing
10.1. EDID writing (Main PWB: QPWBXF282WJZZ HDMI • RBG Input Terminal)
Adjustment point
1 HDMI EDID writing
(Main PWB)
2 Analog RGB EDID writing
(Main PWB)
10.2. MAC address writing (Main PWB: QPWBXF282WJZZ)
1. Write the MAC key data into IC8453 mounted on the MAIN PWB via RS232C.
2. The data must be written before making the inspection using the checker.
Adjustment conditions
Inspection mode
File version check
Inspection mode
File version check
LC-60E77UN/LC-65E77UM/LC-C6077UN/LC-C6577UM
1) Enter the process mode.
2) Point the cursor to [EDID WRITE ENT] and press the [ENT] key.
The writing is complete when [ENT WRITE OK] is displayed.
(If not written, HDMI does not function.)
CAUTION: Perform the data writing after setting the model discrimi-
nation. The data based on the model discrimination infor-
mation is recorded in EEPROM.
1) Write the EDID data for analog RGB into IC1809 mounted on the
main PWB.
TL1821 ••• I2C clock, TL1823 ••• I2C data
TL1824 ••• 5V, TL1822 ••• GND
TL1848 ••• Write protection (H: WP, L: write enable)
2) Perform the data writing before making inspection using the
checker.
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Adjustment procedure