45
VC-AA350A/L/M/W
VC-AA352W,AA360A,AA370A
VC-AA550A/L/W,AA560A,AA570A
REPLACEMENT OF IC710(E
2
PROM)
Servicing precautions
When the IC710(E
2
PROM) has been replaced, make the following reprogramming.
Depending on models, the IC710(E
2
PROM) has been factory adjusted for it’s memory function.
It’s therefore necessary to reprogram the memory function for the model in question.
Note that the servo circuit requires readjustments for the slow and still modes.
1. Memory function reprogramming.
1. Check the power off.(Power is standby mode)
2. Make for moment short-circuit test point(TP801 and TP803), located at the front side on the main PWB.
Be sure that all the LCD display light up into the TEST mode.
3. Using the C) AND (–) buttons, select the right function numbers from JP0 to J39, which appear in the
LCD display, referring to the E
2
PROM map.
Press the DISPLAY button to pickup the functions(ON) and the CLEAR button to discard the functions(OFF).
DISPLAY and CLEAR buttons, are located on the remote control unit.
∗
when the DISPLAY button has been pressed (ON), the memory function number starts flashing.
∗
when the CLEAR button has been pressed (OFF), the memory function number lights up.
2. Memory recording preset level reprogramming.
1. Similarly to the above step 1-1 and 2 the same operate.
2. Using the CHANNEL (+) AND (-) buttons, select the right function numbers continued from recording preset
number as has been JP0~J39, which appear in the LCD display, referring to the E
2
PROM map.
3. Finally make for a moment short-circuit test point(TP801 and TP803), both located at the front side on the main PWB
to clear the TEST mode.
