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D-A03
EEPROM WRITING PROCEDURE
EEPROM (IC1402) writing procedure
1. Method for setting the reference temperature value
(This setting should be performed quickly at a room temperature, between 21 to 29 when the PWB is not hot.)
1) When replacing the EEPROM, wait until it has cooled down.
2) Connect the main unit using the single MD main PWB.
3) Enter the test mode as shown on page 12.
EJECT
4) Press the TUNER (BAND) button.
TEMP
: Measured temperature, : Temperature setting
5) Find the temperature correction value for the current ambient temperature on the following table. Adjust the tempera-
ture correction value using the VOLUME UP/DOWN button.
An example: When ambient temperature is 22 and measured temperature is 7AH
Temperature setting = 7AH-01H
= 79H
* When the measured temperature fluctuates between two values, take lower one (if temperature
fluctuates between 7AH and 79H, take 79H).
6) Press the POWER button and write the temperature setting into the EEPROM.
2. Method of making settings other than the reference temperature
1) Install the MD main PWB in the mechanism, and connect it to the main unit.
2) Enter the test mode as shown on page 12, and insert a disc.
AUTO AJST
3) Press the CD PLAY button seven times.
EEPROM SET
4) Set the value according to the EEPROM DATA LIST using the VOLUME UP/DOWN button.
5) Press the POWER button, and the settings will be written into the EEPROM.
6) Enter the test mode again, perform an
AUTO YOBI adjustment , and write the results into the EEPROM.
Ambient Temperature Correction
+21.0 ~+23.2 -1H
+23.3 ~+26.8 ±0H
+26.9 ~+29.0 +1H
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