SONY DEJ55
Instrukcja Serwisowa

D-EJ955

SERVICE MODE
In the Service mode, this set can check the following. 1. Service Mode Setting Method To set the service mode, perform as follows. 1) Make sure that the power is not turned on. 2) Check for the following states: Open/close detection switch (S804) ...... OFF Solder bridge at SL806 (OPEN) ............ OPEN

2. Operation in Service Mode When the Service mode is set, the LCD on the remote commander displays the following. Remote commander LCD display
Microcomputer version display All lit Service mode

[AVLS] switch (S802) ........................... NORM [HOLD] switch (S801) .......................... OFF [G � PROTECTION] switch (S803) ....... 1
C810

C440

C464

3) Short the solder bridge at the SL807 (TEST) on the MAIN board (see Fig. 2). 4) Turn the power on.
D803

C811

R813

� MAIN Board (Component Side) �

C804

D805

FB803

Fig. 2

+

VD101 888 DDDD
BASS12

3. Operation of Buttons and Knobs in Service Mode The following operation can be checked by operating the buttons and knobs on the set and remote commander.
R811 A R812

+ C806 C807 C805 R808 A

K

C809

3-1 . Case without Setting a CD � > N / . buttons on the set and > N / . knobs on remote commander Optical pick-up movement (outward or inward) Tracking/sled servo off
Note: Do not look directly at the laser beam from the optical pick-up. Do not move forcibly the optical pick-up exceeding the most-outside or most-inside track.

VDR8

R807

SL806 (OPEN)

SL807 (TEST)

3-2 . Case with Setting a CD Cheking method: 1) Make sure that the power is not turned on. 2) Leave a solder bridge of the SL807 (TEST) on the MAIN board shorted. 3) Turn the power on, and then set a CD and play it with the X button on the remote commander. Remote Commander LCD display

0000
� �

(play mode)

x button on the set and remote commander

�

All servos (focus/tracking/sled) off > N / . buttons on the set and > N / . knobs on remote commander Optical pick-up movement (outward or inward) Tracking/sled servo off [PRT/ENT] button on remote commander Tracking gain up mode
Remote Commander LCD display

Up0000
(For the rest, turn the power off and then turn it on again)

� �

[VOL +] / [VOL --] buttons on the set and [VOL +] / [VOL --]
knobs on remote commander 2-step volume setting [PLAYMODE] button on remote commander CLV speed becomes 1 to 4 times each time the button is pressed Tracking/sled servo on

4