Sony D-E888 Service Manual page 4

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 (S801) ...... OFF
Solder bridge at TAP802 (OPEN) ......... OPEN
[ALVS]
switch (S803) ........................... NORM
[HOLD]
switch (S804) .......................... OFF
[G-PRO]
switch (S805) ......................... 1
3) Short the solder bridge at the TAP801 (TEST) on the Main
board (see Fig. 2).
4) Turn the Power on.
– MAIN Board (Component side) –
TAP801
(TEST)
TAP802
(OPEN)
S801
(OPEN/CLOSE/ DETECT)
Fig. 2
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
888
All lit
All off
Microcomputer
version display
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.
•
u button on the set
Focus ON
Tracking/Thread servo OFF
•
x button on the set and remote commander
All servos (Focus/Tracking/Thread) OFF
•
/ buttons on the set and
> .
commander
Optical pickup movement (outward or inward)
Tracking/Thread servo OFF
•
[PLAYMODE]
button on remote commander (CLV speed
becomes 1 to 4 times each time the button is pressed)
Tracking/Thread servo ON
•
[PRT/ENT]
buttons on remote commander
Tracking gain up mode
•
[VOL+] [VOL--]
/
knobs on remote commander
2-step volume setting
•
[SOUND]
button on remote commander
Servo auto adjustment (In play mode, press this button before
[PLAYMODE]
pressing the
4. Service Mode Releasing Method
To release the Service mode, perform as follows.
1) Turn the Power off.
2) Open the solder bridge at the TAP801 (TEST) on the Main
board.
Note: Remove the solder completely.
– 4 –
VB025
BASS12
%B025
Uncertain
/ knobs on remote
> .
[VOL+]
buttons on the set and
button on remote commander)
[VOL--]
/