Sony MCE-K700 Service Manual page 5

Lighting of All Fluorescent Indicator Tube Displays
and Key Check Mode
1. Connect the TEST2 (Short round) on the Main board with solder.
2. Connect the power plug to the outlet.
3. All the Fluorescent Indicator tube displays light up.
4. Press any button to enter the key check mode. In the key check
mode, each time a button is pressed, figures displayed on the Fluo-
rescent 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 corre-
sponding buttons are pressed.
5. To exit the test mode, disconnect the power plug from the outlet.
7-segment display
88
888888
Count up display
[PANEL BOARD] (Conductor side)
Button number display
IC402
Button Name
KEY CONTROL ˜
KEY CONTROL N
KEY CONTROL n
KARAOKE STAR
DNR
§ OPEN/CLOSE
0 ≠
) ±
SELECT
POWER
P
·
TEST 2
R445
R424
— 5 —
Button Number (Displayed only while a
button is pressed.)
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 21
Figure 22
Figure 23
Figure 38 and adjustment LED (D403)
All Fluorescent Indicator tube
displays light up
Surround and other displays light up alter-
nately.
KEY CONTROL KEY CONTROL
RESUME
KARAOKE
PON
SUR
THEATER STAR
7 segments displays light up alternately
8
8 8 8
8
8 8 8
AUTO
MUSIC