Sony HCD-VZ30AV Service Manual page 18

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[Error History Display Mode]
Mode which enables the history of error occurring in the CD player
to be checked.
Execute this mode after ending the aging mode.
Procedure:
1. Press the ?/1 button to turn the set ON.
2. Press the three buttons
simultaneously.
3. Select the desired display mode from the following modes by
moving the PUSH ENTRY button to the right and left.
• Number of mechanism errors display mode
• Mechanism error display mode
• Number of times of NO DISC display mode
• NO DISC display mode
4. Press the ?/1 button to end and turn the set OFF.
5. To erase the error history, perform COLD reset.
(Press the three buttons
simultaneously.
• Viewing the mechanical error history display
(Switch the history by moving the PUSH ENTRY up and down)
Display
CDM E@@D##$%!
@@ : Error number. 00 is the newest.
## : Mechanism error after initialization is complete.
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L 13942296513
$ : 1 or 2 : Mechanism error during the tray loading in between the
stocker position and the rear position behind the stocker
position.
% : 2 : Mechanism error during up and down movement of stocker.
! : 2 : Mechanism error of clamper and that during mode switching.
• Viewing the NO DISC ERROR history display
(Switch the history by moving the PUSH ENTRY up and down)
Display
No E@@D##$$%
@@ : Error number. 00 is the newest
## : Error contents
01 : Focus error
02 : GFS error
03 : Setup error
$$ : Retries
00 : NO DISC is determined without attempting chucking
retry
02 : NO DISC is determined after chucking retry.
% : State when determined as NO DISC
1 : When stopped
2 : At setup
www
3 : At TOC READ
4 : When accessing
5 : When playing
6 : When pausing
.
7 : When manual searching (during play)
8 : When manual searching (during pausing)
18
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[VIDEO CD Color-bars Mode]
On this mode, the data of the color-bars signal as a picture signal
and the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC502) for the video CD signal check. When
measurement of the voltage and waveform on the VIDEO board,
perform it in this mode.
For reference, the color-bars signal can be observed at J302 (VIDEO
OUT) using an oscilloscope.
Procedure:
1. Short the both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press the FUNCTION button to select CD.
3. The color-bars appears when the CD is in stop status, and it
disappears when the CD goes in play status.
4. After measuring, remove the lead wire connected.VIDEO board
(SIDE B)
VIDEO board (SIDE A)
J301
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3 6 7 1 3
CN501
SL503
SL502
SL501
CHECK LED
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.
2 9 9 4 2 8
J302
1 5 0 5 8 2 9 9 4
CN503
CN502
m
co
9 9
2 8 9 9