EEPROM (IC402) writing procedure

1.Procedure to replace EEPROM and write initial value of microcomputer in EEPROM

(1)Replace EEPROM.

(2)Refer to the latest EEPROM data list.

(3)Start the test mode. (Refer to page 12 "Entering the TEST mode".)

(4)Version display (At the time of settlement of the test

mode by the button operation.)

[ V e r . ]

EEPROM version (c ~ z)

Microcomputer ROM version

(5)The whole LCD lights.

(6)Test mode stop state.

[ T E S T ]

MD-MT877/MD-MT877C

(7)Press the "BASS" button, and press 1 time the "FAST REVERSE" button.

[ E E P R O M ]

(8)Perform the operation to display "EEPROM SETTING MODE CHART", compare the EEPROM DATA LIST with the display, and set according to the EEPROM DATA LIST with the VOLUME+ or VOLUME– button.

(9)Set the temperature reference. (Refer to the Tempera-

ture reference setting method.)

(10)Set according to the EEPROM DATA LIST.

(11)Press the STOP button.

[ T E S T ]

(12)Press the STOP button.

(13)After data is written in EEPROM, turn off power .

2. Temperature reference setting method

[1] Measurement, calculation and setting procedure

(1)Set the TEST mode.

(2)Start the EEPROM mode 'Temp' menu.

•Button operation in order of BASS, FAST REVERSE x 1 time, PLAY, PLAY in the test mode STOP state.

•'TM$$%%' is displayed. ($$= Temperature code, %% = Temperature reference)

(3)Once press FAST FORWARD, and determine the dis- played microcomputer TEMP input AD value.

•'TPin##' is displayed. (## = TEMP input AD value)

(4)At the ambient temperature, determine the tempera- ture corrected value from the temperature measure- ment value correction table.

(5)Determine the temperature reference, using the follow- ing formula.

•Temperature reference = Microcomputer TEMP input AD value + Temperature corrected value.

(6)Set the temperature reference value by button opera- tion, and check whether the temperature code indica- tion corresponds to "Temperature Code Identification Table".

[2] Temperature measurement value correction table

Ambient

Temperature

Center

temperature

correction

temperature

 

 

 

+ 8oC ~ +10oC

- 05h

+ 9.1oC

+11oC ~ +13oC

- 04h

+ 12.0oC

+14oC ~ +16oC

- 03h

+ 14.9oC

+17oC ~ +19oC

- 02h

+ 17.8oC

+20oC ~ +22oC

- 01h

+ 20.7oC

+23oC ~ +25oC

± 00h

+ 23.6oC

+26oC ~ +28oC

+ 01h

+ 26.9oC

+29oC ~ +30oC

+ 02h

+ 29.4oC

+31oC ~ +33oC

+ 03h

+ 32.3oC

[3] Temperature code identification

Check that the temperature code indicated after the servo control corresponds to the temperature limits below

Ambient

Temperature

Center

temperature

correction

temperature

 

 

 

- 9oC ~ +10oC

08h

+ 0.5oC

+ 3oC ~ +21oC

07h

+ 12.0oC

+15oC ~ +33oC

06h

+ 23.6oC

+26oC ~ +43oC

05h

+ 35.0oC

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