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Model
SCD-CE775
Pages
97
Size
6.46 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
scd-ce775.pdf
Date

Sony SCD-CE775 Service Manual ▷ View online

16
SCD-CE775
SECTION  5
TEST  MODE
Test Mode Command List
The contents of test mode are as follows.
Note:
Wrong operation in the test mode causes a trouble, thus requiring extreme care.
LINE command (1X): Use mainly for a manufacturing line.
No.
Name
Description
Remarks
05
DSP MON1
XUGF, XPCK, C2PO outputted from IC509 (CD DSP)
Not used for the servicing
06
DSP MON2
MNT0, MNT1, MNT2, MNT3 outputted from IC509 (CD DSP)
Not used for the servicing
07
DSP MON3
RFCK, XPCK, XROF, GTOP outputted from IC509 (CD DSP)
Electrical measurement,
CD CLV jitter measurement
STANDARD command (1X): Use when the servo is applied by manual operation.
No.
Name
Description
Remarks
12
LD ON/OFF
The laser diode is turned on or off
On or off are switched alternately
13
SPIN ON/OFF
The spindle motor is rotated with the regulated voltage
On or off are switched alternately
14
FSRV ON/OFF
The focus servo is turned on or off
On or off are switched alternately
15
TSRV ON/OFF
The tracking servo is turned on or off
On or off are switched alternately
16
CLV ON/OFF
The spindle SLV servo is turned on or off
On or off are switched alternately
Focus and tracking servos must be already turned on
17
SSRV ON/OFF
The sled servo is turned on or off
On or off are switched alternately
Focus, tracking and spindle servos must be already turned on
18
ALL SRV ON
All servos are turned on
19
ALL SRV OFF
All servos are turned off
Stop command in the test mode
This set automatically executes self-diagnosis and various checks
by entering the test mode.
Note:
 This set automatically makes various adjustments according to the
type of disc, thereby not requiring adjustment of the set when parts
were replaced. However, be sure to execute 5-1. IC AND FLUO-
RESCENT DISPLAY TUBE CHECK, 5-2. AUTO CHECK and 5-
8. WAVEFORMS CHECK.
Disc for Test Mode
Various checks of this set require the following discs.
Model
Type 
*
1
Category
Application
MODEL
SATD-S5
12 cm disc
Adjusted value check,
(J-2501-215-A) SL
Reference disc
Operation check,
SATD-S4
Optical waveform check
(J-2501-184-A)
Not specified
DL
12 cm disc
Operation check
PATD-012
Adjusted value check,
(4-225-203-01)
CD
12 cm disc
Operation check,
YEDS-18
Reference disc
Optical waveform check
(3-702-101-01)
Not specified
HYBRID 12 cm disc
Operation check
*1 SL: Single Layer
DL: Dual Layer
Setting Method of Test Mode
Turn the 
[POWER]
 switch on while pressing the 
[        AMS        ]
dial and the 
[MENU]
 button. Release the 
[MENU]
 button and the
[        AMS        ]
 dial in this order when “Test Mode Menu” is
displayed on the fluorescent display tube. (If the 
[        AMS         ]
dial is released first, the test mode becomes active but “Test Mode
Menu” is not displayed)
[    OPEN/CLOSE]
 key in the TEST mode.
The 
[    OPEN/CLOSE]
 key is disabled immediately after the ma-
chine enters the TEST mode. Be sure to turn the 
[        AMS        ]
 dial
to select 59 Table Init and push 
[        AMS        ]
 once. When initial-
ization of the table is completed, the message INITAIL OK appears
several seconds on the FL display. After this, the 
[    OPEN/CLOSE]
key is enabled and disc can be inserted and ejected.
When the command 59 Table Init is executed, the same operations
of the POWER ON to the disc chucking in the normal operations
as described below are performed. However, it presumes that the
door and the tray are closed depending on the stop status.
59 Table Init 
t
 BU DOWN (disc unchucking) 
t
 Table rotates
(disc search) 
t
 BU UP (disc chucking) at the disc that is found
first of all.
When there are no discs, BU UP is executed at the DISC1 posi-
tion.
Releasing Method of Test Mode
To release the test mode, turn the 
[POWER]
 switch off.
Selection/Entry of Test Mode
To select and enter the “Test Mode Menu”, operate as follows.
1. Rotate the 
[        AMS        ]
 dial to select the menu, and press
the 
[        AMS        ]
 dial to enter.
2. The test is switched on or off alternately each time the
[        AMS        ]
 dial is pressed.
3. To return to the previous step, rotate the 
[        AMS        ]
 dial
to select the desired item, and press the 
[        AMS        ]
 dial
to enter.
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17
SCD-CE775
FOCUS command (2X): Focus related. (All servos must be already turned on (except command 21))
No.
Name
Description
Remarks
21
FSRCH ON/OFF
The continuous vertical motion of the optical pick-up lens is turned on or
Avoid a long-time use
off
22
F-BIAS UP
Increase focus bias
Focus bias value
23
F-BIAS DOWN
Decrease focus bias
Focus bias value
24
ADJ FCSBIAS
The focus bias is adjusted automatically
Both + and - directions are searched to search for best jitter point
25
FGAIN UP/DW
The focus servo gain is switched between normal and down
Normal or down are switched alternately
26
FJMP UP/DWN
Focus jump is executed
Valid only for DL
UP: layer 0t1, DOWN: layer 1t0
27
FOCUS AGC
The focus servo gain is adjusted automatically
28
DISP FBdata
The focus bias adjusted value is displayed
Hexadecimal display 9 bit data
Note:
On or off and up or down are switched alternately
OFFSET (PI, FE, TE) command (3X): Adjusts the offset of PI, FE and TE signals.
No.
Name
Description
Remarks
31
PI/FE OFSET
Adjusts the offset of PI, FE and TE signals
TE offset adjustment is executed for the CD
This adjustment must be executed after 61 DISC DETECT
only
TRACKING command (4X): Tracking servo related.
No.
Name
Description
Remarks
41
TGAIN NM/UP
The tracking servo gain is switched between normal and up
Normal or up are switched alternately
44
ADJ TRK DSP
The traverse AGC and E-F balance adjustment is performed
45
TRACKING AGC
The tracking servo gain is adjusted automatically
SEARCH command (5X): Track search related. (Nos. 51 through 53 are not used for the servicing.)
No.
Name
Description
Remarks
51
1-TRCK JUMP
One-track jump is performed
52
M-TRCK MOVE
M-track movement is performed
53
FINE SEARCH
Fine search is performed
58
CDM Check
Measurement of table rotation hours, tray open/close hours and panel door
open close hours
59
Table Init
Initializes the table.
After this command, the 
[    OPEN/CLOSE]
key is enabled.
DISC DETECT command (6X): Disc type check related.
No.
Name
Description
Remarks
61
DISC DETECT
Disc type check is executed
Refer to how to apply servo by manual
Display after judgment
operation (18 page)
DSKMOD CD: Judged as CD
DSKMOD SL: Judged as SACD (SL)
DSKMOD DL: Judged as SACD (DL)
DSKMOD HLHD: Judged as HYBRID HD
DSKMOD CDRW: Judged as CD-RW
62
SET DISC CD
Enter disc type    CD setting
CD forced setting
63
SET DISC SL
Enter disc type    SL setting
SL forced setting
64
SET DISC DD
Enter disc type    DD setting
DD forced setting
65
SET DISC HH
Enter disc type    HYBRID HD setting
HD forced setting
66
SET DISC HC
Enter disc type    HYBRID CD setting
CD forced setting
6F
Download
Not used for the servicing
A
18
SCD-CE775
TOOLS command (8X): Performs aging, reads adjusting parameters, etc.
No.
Name
Description
Remarks
81
VERSION
Firmware version is displayed
Example: Ver 1.00
83
TRAY AGING
Tray open-close aging is performed
Number of times and eccentricity
Not used for the servicing
measurement   Not used in this set.
84
JITTER
Jitter measurement
Not used for the servicing
85
ERROR RATE
Error rate measurement
Error rate
CD: C1, C2
Not used for the servicing
SACD: PO, PI1, PI2
86
ALL SRV ON
Apply all servos
Use when applying the servo by
Full automatic measurement including PI, FE and TE offset adjustment is
manual operation
performed
Refer to STANDARD command (16 page)
87
DISP ADJ DT
Automatic adjusting parameters are displayed
Refer to auto check items  (21 page)
The offset adjusted values are scroll-displayed in order of RF, VC, FE and
TE
Refer to auto check items  (21 page)
8A
FL TEST
Not used for the servicing
8d
Set Up Init
Set to factory shipping mode
Set when repair completed
PLAY, REPEAT, DIGIFIL, etc. are initialized
Refer to 5-7. SHIPPING MODE (26 page)
8F
49 TRCK JIT
Used for jitter measurement of 49th music on SACD-S4
For manufacturing line
Not used for the servicing
QA command (9X)
No.
Name
Description
Remarks
91
F.JMP CHECK
Not used for the servicing
92
SET CHECK
The set is checked
Refer to 5-2. AUTO CHECK (21 page)
93
WATER MARK
Not used for the servicing
94
SET AGING
The set aging is performed
Refer to 5-6. AGING MODE (26 page)
Repeat by the specified number of times or until an error occurred
95
DISPLAY ERROR
The content of error recorded to the set is read and displayed
Refer to Error Display list (27 page)
(Error recording) Only one item is recorded
96
D-OUT OnOff
Digital out of CD is turned on or off
Not used in this set.
98
APDO JITTER
Not used for the servicing
9C
BU DENCHO
The content of error recorded to the set is read, and then the S curve
Refer to 5-8.WAVEFORMS CHECK
waveform, traverse waveform, and RF waveform can be checked
(28 page)
successively
9D
P-ON HOUR
Approximate cumulative power supplying time is displayed
In unit of 1 hour
(Initialized by 8d command)
9E
RFD OUT
RFD output is turned on or off
Not used for the servicing
SACD jitter measuring mode
How to Apply Servo by Manual Operation
In analyzing failures of the set, the servo may be applied by manual operation. To apply servo in the test mode, use the following method.
1. After setting the test mode, rotate the 
[        AMS        ]
 dial to select a command, and press the 
[        AMS        ]
 dial to enter.
2. “61 DISC DETECT” (Disc type check)t“86 ALL SRV ON”  (All servos on + auto adjustment)
3. If applying servo while checking the condition one by one, “61 DISC DETECT” (Disc type check)t“31 PI/FE OFSET” (Offset
automatic adjustment)t“14 FSRV ON/OFF” (Focus servo on)t“16 CLV ON/OFF” (CLV servo on)t“44 ADJ TRK DSP ” (E-F
balance adjustment)t“15 TSRV ON/OFF” (Tracking servo on)t“17 SSRV ON/OFF” (Sled servo on)t“24 ADJ FCSBIAS” (Fo-
cus bias adjustment)t“27 FOCUS AGC” (Focus auto gain adjustment)t“45 TRACKING AGC” (Tracking auto gain adjustment).
Note:
1. On and off are alternately switched in the same command.
2. For a stop, select “19 ALL SRV OFF” and press the 
[        AMS        ]
 dial.
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19
SCD-CE775
Press the 
[        AMS        ]
 dial when No.sssss sssss*1 is displayed, and a checking for that display will start or the lower layer
will be selected. For the selection on the same layer, rotate the 
[        AMS        ]
 dial. It is looped on the same layer, and when “END?” is
displayed, press the 
[        AMS        ]
 dial to return to the upper layer.
*1 s denotes a displayed character.
Manual Check Method
In the “12. MANUAL CHK”, individual checks (121. LOAD IN to 12A. LOAD OUT) are possible.
Example:
 If 124. READ TOC of 12. MANUAL CHECK is to be checked.
Setting Method:
1. After setting the test mode, rotate the 
[        AMS        ]
 dial to select “92. SET CHECK” and press the 
[        AMS        ]
 dial to enter.
2. When “SET TEST START” is displayed, rotate the 
[        AMS        ]
 dial clockwise by 2 clicks to select “1. TOTAL CHECK?”
and press the 
[        AMS        ]
 dial to enter.
3. When “10. TOTAL CHECK” is displayed, rotate the 
[        AMS        ]
 dial clockwise by 2 clicks to select “12. MANUAL CHK?" and
press the 
[        AMS        ]
 dial to enter.
4. When “120. MANUAL CHK” is displayed, rotate the 
[        AMS        ]
 dial clockwise by 4 clicks to select “124. READ TOC?” and
press the 
[        AMS        ]
 dial to enter.
5. A checking will start automatically.
Note:
In making a check, the disc must be loaded. Immediately when a check started, the tray is drawn into the set. Also, the tray can be opened/closed
even during the set check mode.
Set Check
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92. SET CHECK
SET TEST START
10. TOTAL CHECK 
120. MANUAL CHK 
0. IC&FL CHECK  ?
11. AUTO CHECK ?
121. LOAD IN ? 
(Not used)
1. TOTAL CHECK  ?
12. MANUAL CHK ?
122. SPIN UP ?
13. DISP RSLT ?
123. PARAMETER ?
3.HYB CHECK ?
TOTAL CHK END ?
124. READ TOC ?
2. F.JUMP CHECK ?
4. DISP ERROR ?
125. 1/3 SEEK ?
END ??
126. 1-M SEEK ?
127. ERR RATE ?
128. HENSHIN ?
129. SPIN DOWN ?
12A. LOAD OUT ? 
MAN. CHK END?
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