Sony HCD-EC68P Service Manual page 20

HCD-EC68P/EC78P
CD SERVICE MODE
This mode can move the SLED of the optical pick-up, and also can
turn the optical pick-up laser power on and off.
Procedure:
1. Press the [ ] button to turn the power on.
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2. Press three buttons of [CD N], [TUNING + M L], and
DISPLAY simultaneously.
3. Press the [FUNCTION] button to select CD function.
4. It enters the CD service mode and displays "SERVICE".
5. To exit from this mode, press three buttons of [CD N], [TUN-
ING + M L] and DISPLAY simultaneously.
Key Operation:
[TUNING + M L], [l m – TUNING]:
Use these keys to move the SLED. When [TUN-
ING + M L] is pressed in this mode, the SLED
moves to outer circumference and the message
"SLED OUT" is displayed.
When [l m – TUNING] is pressed in this
mode, the SLED moves to inner circumference and
the message "SLED IN" is displayed.
[DISPLAY]:
Use this key to turn the optical pick-up laser power
on and off. When the laser power is turned on, the
message "LD ON" is displayed. When the laser
power is turned off, the message "LD OFF" is dis-
played.
CD ERROR CODE
The past errors of the CD mechanism (CDM) are displayed as the
CDM Errors, and those of the optical pick-up system (= optical
unit + CD board) are displayed as the BD Errors as shown below.
Procedure:
1. Press the [ ] button to turn the power on.
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2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [TUNING + M L], [
PLAY] simultaneously.
4. Then, the CDM error code is displayed as "M0xxxxxx" (x
means hexadecimal number) on the liquid crystal display as
shown below.
5. Every pressing of the [TUNING + M L] button in this
mode increments the number after "M" starting from "M0" up
to "M9", and then returns to "M0". Every pressing of the [l
m – TUNING] button in this mode decrements the number
after "M". The smaller the error code number is, the newer the
error content is.
6. When the [PLAY MODE/TUNING MODE] button is pressed
then, the BD error code is displayed as "D0xxxxxx" (x means
hexadecimal number) on the liquid crystal display as shown
below. In the same way as the CDM error code, use of the
[TUNING + M L] and the [l m – TUNING] but-
tons in this mode enables tracing of the error history.
7. To release from this mode, press the [
power off.
20
Contents of "CDM Errors"
Error display example
1 It indicates the error history number
2 It indicates whether the CDM error occurs in the normal opera-
3 It indicates the processing during which the trouble has oc-
4 It indicates the operation during which the trouble has oc-
] and [DIS-
x
Contents of "BD Errors"
Error display example
1 It indicates the error history number
2 It indicates the error content
] button to turn the
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M 0 FF 11 42
1 2 3 4
0 to 9: The error code number 0 indicates the newest error.
tions or during the initialization operation.
FF : The error has occurred in the normal opera-
tions.
Other than FF : The error has occurred during the initialization
operation.
curred.
01: The disc EJECT processing is in progress.
02: The disc INSERTION-WAITING processing is in prog-
ress.
03: Processing of the disc INSERTION-REQUEST for the up-
per CD tray is in progress.
04: Processing of the disc EJECTION-REQUEST for the up-
per CD tray is in progress.
05: The disc pulling-in operation is in progress.
06: The disc chucking processing is in progress.
07: The disc re-chucking processing is in progress.
08: The disc chucking-release completion operation is in prog-
ress.
curred.
00 : Waiting for the operation.
10 to 13 : The disc EJECT operation is in progress.
20 : The disc pulling-in operation is in progress.
30 : The disc chucking-release operation is in progress.
40 to 43 : The disc EJECT operation due to error is in prog-
ress.
D 0 02 09 01
1 2 3 4
0 to 9: The error code number 0 indicates the newest error.
01: The focus servo cannot lock-in.
02: GFS is no good (NG).
03: The startup time exceeds the specifi ed period of time (time
over)
04: The focus servo is unlocked continuously.
05: Q code cannot be obtained within the specifi ed period of
time.
06: The tracking servo cannot lock-in.
07: Blank disc