Notes On Parts Replacement; Eeprom (Ic604/Mb-861 Board) Replacement - Sony WRR-805A Service Manual

2-2. NOTES ON PARTS REPLACEMENT

2-2-1. EEPROM (IC604/MB-861 board) Replacement

If the EEPROM (IC604 on the MB-861 board) is replaced, do the following.
When the power of the WRR-805A is turned on for the first time after the replacement:
1. "Error 11" appears on the LCD, and data is automatically initialized.
After initialization is complete, "62-17" (For CE62 model), "69-01" (For CE69 model) or "66-01" (For AU66 model)
appears on the LCD.
2. After "62-17" (For CE62 model), "69-01" (For CE69 model) or "66-01" (For AU66 model) is displayed, perform section
"3-2-3. Muting Level and RF Level Adjustment".
2-3. ERROR MESSAGES
When a problem occurs, one of the following error messages may appear on the display.
Messages Contents
Error 03 The battery voltage exceeds the allowable value.
Error 11 An error occurred in backupmemory data.
Error 21 The PLL synthesized circuit is in trouble.
2-2
Measures
Use the specified batteries.
The data was initialized. Set the receiving channel.
Check the PLL synthesized circuit (IC202,CP201, and its peripheral
circuit) on RF-93 board.
WRR-805A (CE, AU)