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Model
SCD-XE670
Pages
87
Size
6.12 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
scd-xe670.pdf
Date

Sony SCD-XE670 Service Manual ▷ View online

21
SCD-XE670
4-5 . AGING MODE
(• Perform as necessary)
The aging can be performed to the set in the test mode. The aging
can be continued by the set number of times or until an error oc-
curs.
In the aging, the following operations are repeated.
Table turn
tDisc chuckingtDisc detecttServo ontAuto
adjustment
tTOC readingtPlay of first track for 5 secondtPlay
of last track for 5 second
tPlay of first track for 5 secondtDisc
unchucking
Setting Method:
1. After setting the test mode, rotate the 
[        AMS        ]
 dial to
select “94. SET AGING” and press the 
[        AMS        ]
 dial
to enter.
2. When “AGING TIMES” is displayed, rotate the 
[        AMS        ]
dial to set the number of aging times. (For the number of times,
every 10 times can be set. Setting 0 (zero) eliminates the count
limitation where the aging is repeated until an error occurs)
Note:
 Do not perform unmanned overnight aging..
3. Press the 
[        AMS        ]
 dial, and “AGING START” will be
displayed instantaneously, then “DISC IN & JOG ON” will be
displayed and the tray will come out automatically.
4. Place a disc (CD or the SACD SL disc) on the tray, and press
the 
[        AMS        ]
 dial to start the againg.
5. At the completion of aging by the set number of times, the
tray will come out automatically and the check will stop.
Typical time required for aging    About 1 hour/100 times
“AGING SUCCESS!” will be displayed if no error occurred
in the aging, or the error will be displayed if an error occurred.
(Refer to the following error list)
4-6. SHIPPING MODE
The repaired set must be initialized, and for this purpose the set
should be set to the shipping mode.
Setting Method:
1. After setting the test mode, rotate the 
[        AMS        ]
 dial to
select “8d Set Up Init” and press the 
[        AMS        ]
 dial to
enter.
2. “8D 000000000 00” will be displayed, and if the scroll starts
in the left direction, the set initialization has completed
3. Press the 
[POWER]
 button to turn the power off.
Note:
Take care not to leave the test disc in the set.
The following setups are established in the SHIPPING MODE
1. Initialization of EEPROM (IC903)
• PLAY MODE
ALL DISCS, CONTINUE
• COMMAND MODE
CD1
• LAYER SELECTSACD
• M/2CH SELECT MULTI
• DIGITAL FILTER
STD
• 2ch SPK MODE 2ch DIRECT
• Mch SPK MODEMch DIRECT
• Resetting the accumulated hours meter.
2. Chucking at the DISC1 position.
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Error List
An error occurring during the check in the aging mode of the test mode is displayed automatically (scroll display) immediately when the
error occurred.
< How to view the error history >
1. Select “95 DISP ERROR” with the 
[        AMS        ]
 key, and press the 
[        AMS        ]
 key once.
2. The error that has occurred lastly in the set and the signal status (H = 1, L = 0) at that time are displayed on the FL display by scrolling.
(Types of the errors and the signal status that can be checked, are the same as the error display of the aging mode.)
3. Press the 
[        AMS        ]
 key once again to show the error history repeatedly.
4. When the error history is displayed with scrolling once, the mode returns to the normal test mode.
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SCD-XE670
Display Items List:
Display items
Description
Remarks
Error name
tRefer to the error display list
IN SW
Sled in switch state when an error occurred
0: switch off    Not limit in
1: switch on    Limit in (Optical pick-up is at most inward track)
FOK
FOK signal state when an error occurred
FOK signal    Is focus on?
0: FOK L (Focus off), 1: FOK H (Focus on)
LOCK
LOCK signal state when an error occurred.
LOCK signal    Is PLL lock?
0: LOCK L    Not lock, 1: LOCK H    Lock
From
Displayed if effective in the error item
Disc PSN (relative address) is
tRefer to the error display list
displayed in case of access error
To
Displayed if effective in the error item
Disc PSN (relative address) is
tRefer to the error display list
displayed in case of access error
Error Display List:
Error display
Error description
Main causes of errors
DISC DETECT ERROR
Disc type error
Optical pick-up, RF amplifier or CD
MIRR measured time is displayed in From:
DSP IC is faulty
OFFSET ADJUST ERROR
Offset adjustment error
Optical pick-up, RF amplifier or CD
DSP IC is faulty
FCS SRV ON ERROR
Focus servo error
From:1 means focus search failed
An error code is displayed in From:
From:2 means defocusing
CLV SRV ON ERROR
CLV servo error
Defocusing
E-F BALANCE ERROR
E-F  balance adjustment error
Defocusing
TRK SRV ON ERROR
Tracking servo error
Tracking servo on time out
Optical pick-up, RF amplifier or CD
DSP IC is faulty
SLD SRV ON ERROR
Sled servo error
Sled servo on time out
FOCUS BIAS ERROR
Focus bias adjustment failed
Defocusing during adjustment
An error code is displayed in From:
Description of display
An error code is displayed in From
From:1 means retry failed 3 times
From:2 means abnormal value
Optical pick-up, RF amplifier or CD
DSP IC is faulty
FCS AGC ERROR
Error at focus gain automatic adjustment
Defocusing during adjustment
Optical pick-up, RF amplifier or CD
DSP IC is faulty
TRK AGC ERROR
Error at tracking gain automatic adjustment
Defocusing during adjustment
Optical pick-up, RF amplifier or CD
DSP IC is faulty
ACCESS 1TJ ERROR
Access    Error at one-track jump
Access failed
Effective addresses (PSN) are displayed in From: and To:
Defocusing at access, etc
ACCESS FINE ERROR
Access    Error at fine search
Access failed
Effective addresses (PSN) are displayed in From: and To:
Defocusing at access, etc
ACCESS MOVE ERROR
Access    Error at M-track MOVE
Access failed
Effective addresses (PSN) are displayed in From: and To:
Defocusing at access, etc
WHILE PLAYING ERROR
Error during disc playing
Defocusing
Focusing retry failed
FCS JUMP ERROR
Time out error at focus jump
Defocusing
Focusing retry failed
System errors are as follows.
Note:
This error is not saved in the set.
Display
Description
Toc Error *
Error during the time from auto adjustment to TOC reading, Different type of disc (Such as a DVD disc), Disc is dirty
Toc Error ****
Illegal SACD (Such as a pirated version)
Read Error
Music data read error (Error during disc playing)
Error display is as follows.
Error name, Disc type, IN SW (Sled in switch state), FOK (FOK signal state), LOCK (LOCK signal state), From (Displayed if effective),
To (Displayed if effective), Aging times (Displayed in aging mode only)
Display example
ACCESS MOVE ERROR : SACDSL : IN SW 1 FOK 0 LOCK 0 : FROM 205663 : TO 2461601 : TIMES 5
 (Error name) (Disc type) (Sled in switch, FOK, LOCK signal state) (Relative address) (Relative address)(Aging times)
23
SCD-XE670
Traverse Check
Connection:
Checking Method:
1. Under the condition of S curve waveform check mode in step
5, press the 
[        AMS        ]
 dial.
2. After “WAIT” is displayed, the traverse waveform check mode
will become active and “TRAVERSE MODE” will be dis-
played.
3. Connect an oscilloscope to the TP513 (TE) and TP504 (AVC)
on the MAIN board.
4. Check that the level A and B of waveform on the oscillo-
scope satisfy the specification.
Specified Value:
Disc
A
B
SATD-S5 or
SATD-S4
PATD-012 or
0.9 to 1.4 Vp-p
–0.1 to +0.1V
YEDS-18
Checking and Connecting Location : See page 25.
4-7. WAVEFORMS CHECK
This set performs automatic adjustment for each disc, and there-
fore the set need not be adjusted when parts are replaced, but it
requires checking following the description in this section, 4-1.
IC AND FLUORESCENT DISPLAY TUBE CHECK and 4-2.
AUTO CHECK.
For the check, the test mode is used. Wrong setting causes a trouble,
thus requiring extreme care.
BU Electrical Adjustment Mode
The BU electrical adjustment mode is used to check the S curve
waveform, traverse waveform and RF waveform. After a disc is
placed on the tray, each time the 
[        AMS        ]
 dial is pressed,
the check mode is switched in order for S curve waveform
t
traverse waveform
tRF waveform.
Setting Method:
After setting the test mode, rotate the 
[        AMS        ]
 dial to select
“9C BU DENCHO” and press the 
[        AMS        ]
 dial to enter.
“BU MEASURE” will be displayed if the BU electrical adjust-
ment mode becomes active.
S Curve Check
Connection:
Checking Method:
1. After setting the BU electrical adjustment, place the test disc
(PATD-012 or SATD-S5 or SATD-S4) on the tray and close
the tray, then press the 
[        AMS        ]
 dial.
2. At the completion of disc type check, “CD DETECT” will be
displayed (for PATD-012 or YEDS-18).
Note:
 For the  SATD-S5 or SATD-S4, “SACD DETECT“ is displayed.
3. Press again the 
[        AMS        ]
 dial, and the S curve waveform
check mode will become active and “S-CURVE MODE” will
be displayed.
4. Connect an oscilloscope to the TP506 (FE) and TP504 (AVC)
on the MAIN board.
5. Check that the level A and B of waveform on the oscilloscope
satisfy the specification.
Specified Value:
Disc
A
B
SATD-S5 or
SATD-S4
PATD-012 or
0.7 to 1.7 Vp-p
–0.1 to +0.1V
YEDS-18
Note:
For easier observation of this waveform, extend the sweep time
and raise the brightness.
Checking and Connecting Location : See page 25.
MAIN board
TP506 (FE)
TP504 (AVC)
+
oscilloscope
A
B
S curve waveform
VC
MAIN board
TP513 (TE)
TP504 (AVC)
+
oscilloscope
A
B
VC
Center fo the waveform
Traverse waveform
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SCD-XE670
A
CLV jitter waveform
RF Level Check
Connection:
Checking Method:
1. Under the condition of traverse waveform check mode in step
4, press the 
[        AMS        ]
 dial.
2. Connect an oscilloscope to the TP703 (RFAC) and TP704
(AGND) on the MAIN board.
3. After “WAIT” is displayed, the RF waveform check mode will
become active and “PLAY 5th TRACK” will be displayed,
and the 5th music on the disc will be played.
4. Check that the RF waveform is clear and the level satisfies the
specification.
5. Press the 
[        AMS        ]
 dial, and “OUTSIDE TRACK” will be
displayed and the outward track of the disc will be played.
6. Check that the RF waveform is clear and the level satisfies the
specification.
7. Press the 
[        AMS        ]
 dial, and “INSIDE TRACK” will be
displayed and the inward track of the disc will be played.
8. Check that the RF waveform is clear and the level satisfies the
specification.
9. After checking, press the 
[        AMS        ]
 dial, and the test is
over when “BU MEASURE” is displayed.
10. Press the 
[OPEN/CLOSE    ]
 button to open the tray, and re-
move the test disc.
11. Using each type of disc, repeat from step 1 of S curve wave-
form check up to step 10 of RF level check.
12. When the check is over, press the 
[POWER]
 button to turn the
power off.
Note:
 Take care not to leave the test disc in the set.
Specified Value:
Disc
A
SATD-S5 or
SATD-S4
PATD-012 or
0.9 to 1.4 Vp-p
YEDS-18
Note:
 Clear RF waveform refers to the waveform where 
 shapes should
be distinctively observed in the center.
Checking and Connecting Location : See page 25.
MAIN board
TP703 (RFAC)
TP704 (AGND)
+
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
RF signal waveform
A
CLV Jitter Check (CD only)
Connection:
Checking Method:
1. Set the test mode.
2. Connect an oscilloscope to the TP516 (RFCK) (CH1), TP517
(WFCK) (CH2) and TP808 (DG) (GND) on the MAIN board.
3. Place the test disc PATD-012 or YEDS-18 on the tray, and
close the tray.
4. Rotate the 
[        AMS        ]
 dial to select “61 DISC DETECT”,
and press the 
[        AMS        ]
 dial to enter. Then, the disc type
will be judged.
5. Check that the disc type has been judged.
(For the PATD-012, “DSKMOD CD” will be displayed. Refer
to the test mode, DISC DETECT command (page 13))
6. Rotate the 
[        AMS        ]
 dial to select “86 ALL SRV ON”,
and press the 
[        AMS        ]
 dial. Then, the disc will rotate,
automatic adjustment will be carried out, and all servos will
be turned on.
7. Rotate the 
[        AMS        ]
 dial to select “07 DSP MON3”, and
press the 
[        AMS        ]
 dial to enter.
8. Check that the value A of waveform on the oscilloscope sat-
isfies the specification.
9. Rotate the 
[        AMS        ]
 dial to select “19 ALL SRV OFF”,
and press the 
[        AMS        ]
 dial. Then, all servos will be
turned off and the disc rotation will stop.
10. Press the 
[OPEN/CLOSE    ]
 button to open the tray, and re-
move the test disc.
11. Press the 
[POWER]
 button to turn the power off.
Note:
 Take care not to leave the test disc in the set.
Specified Value:
Disc
A
PATD-012 or
35 
µ
sec or less
YEDS-18
Checking and Connecting Location : See page 25.
MAIN board
TP516 (RFCK)
TP517(WFCK)
TP808 (DG)
+
+
oscilloscope
(CH2)
(CH1)
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