SONY MCE-S70
Service Manual

Lighting of All Fluorescent Indicator Tube Displays and Key Check Mode
1. 2. 3. 4. Connect SL103 (PANEL) on the MAIN board with solder. Turn the power on. All the Fluorescent Indicator tube displays light up. Press any button to enter the key check mode. In the key check mode, each time a button is pressed, figures displayed on the Fluorescent Indicator tube displays increase. However, figures will not increase for buttons which have been pressed once. The button number corresponding to the button pressed will also be displayed. Button numbers are displayed only while the corresponding buttons are pressed. After the test mode, remove the soldering installed.

Button Name RETURN § PLAY MODE REPEAT PREV � NEXT ± º � DNR JOG SELECTOR (PUSH SELECT) COMET p

Button Number (Displayed only while a button is pressed.) Figure 0E Figure 16 Figure 2b Figure 2C Figure 30 Figure 31 Figure 33 Figure 34 Figure 48 Figure 81 Figure 88 All Fluorescent Indicator tube displays light up Music calendar light up alternately (odd number to even number)
1 11 7 17 3 13 9 19 5 15 2 4 8 12 16 18 14 20 10

n

SL103

SL102

SL101

5.

7-segment display

8888
Count up display Button number display

n

�

�

6

·

7-segments displays light up alternately The odd number digits and the even number digit of the upper 7-segments displays and the lower 7-segments displays light up alternately.

Initial display

[ MAIN BOARD ] � SIDE A �

IC104

IC103

IC104

�5�