Test Mode - Sony D-CS901 Service Manual

D-CS901
The following confirmation can be performed when the Test Mode
is set.
4-1. How to set the Test Mode.
To set the Test Mode, the following method is available.
1) Confirm the set is not powered on.
2) Confirm the following settings.
CD DOOR OPEN switch (S801) ... OFF
Solder Tap (TAP2 )
HOLD switch (S804)
G-PROTECTION switch (S802) ... 1
3) Short the solder tap TAP1 (TEST) on the MAIN board.
4) Turn on the main power.
4-2. How to cancel the Test Mode
1) Turn off the power.
2) Open the solder tap TAP1 (TEST) on the MAIN board.
Note: The solder should be removed clean.
• Refer to Page 10 – MAIN BOARD (side A) –
4-3. Operation when the Test Mode is set.
When the Test Mode becomes active, following messages are
displayed on the LCD.
DISPLAY

Test Mode

version display
All lit
(Test Mode)
4-4. Operations by buttons in the Test Mode.
The following confirmations can be performed by operating buttons.
[Operation when a CD is not placed in the CD player]
• FOLDER + / FOLDER – button
Motion of the optical pick-up (to outside or inside)
Note : Be sure to keep your eyes apart from the direct emission of
the Laser diode.
Do not move the optical pick-up over outermost or innermost.
[Operation when a CD is placed in the CD player]
Procedure:
1) Confirm the set is not powered on.
2) Keep short the solder tap TAP1 (TEST) on the MAIN board.
3) After turning on the power, set a CD in the player.
Then press the >B button.
Tracking/Sled servo off
Focus search
Spindle servo on
DISPLAY
• x button
All servos (Focus/Tracking/Sled) off
CLV brake
Mute on
8
SECTION 4
TEST MODE
... OPEN
... OFF
CS 032
00 00
• FOLDER + / FOLDER – button
Motion of the optical pick-up (to outside or inside)
• DISPLAY button
Error rate signal out
By each pressing the DISPLAY button error rate or spindle
speed is displayed.
DISPLAY
Err
001 00 01
• . button
EF adjustment
CLV automatic mode
Tracking/Sled servo off
DISPLAY
• SOUND button
Automatic gain adjustment
DISPLAY
AUTO GA
• REPEAT/ENTER button
Tracking gain up mode
Tracking gain normal mode (Brake off)
DISPLAY
GA NORM
(To cancel this mode, turn off the power. Then set in the Test Mode
again.)
EF
00 00
00 00
GA UP