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Model
SCD-C222ES
Pages
98
Size
6.62 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
scd-c222es.pdf
Date

Sony SCD-C222ES Service Manual ▷ View online

SCD-C222ES
13
3-10. SENSOR  BOARD
3-11. LOADING  MOTOR  BOARD
1
screw
(PTPWH M2.6)
3
belt (rotary)
4
two screws
(BTTP M2.6)
4
two screws
(BTTP M2.6)
5
SENSOR board
2
tray
3
two screws
(BTTP M2.6)
4
LOADING MOTOR board
1
belt (loading)
2
connector 
(CN13)
SCD-C222ES
14
SECTION  4
ASSEMBLY
Note:
 Follow the assembly procedure in the numerical order given.
ADJUSTING  PHASE  OF  SWING  GEAR  AND  GEAR (U/D)
6
screw
(PTPWH M2.6)
5
stopper washer (FR)
4
Push fully the shaft of shaft gear and 
align the hole shape of gear (loading B).
3
Let the swing gear through under the
chassis     and engage its dowel   
with the groove     of rotary encoder.
2
Install the rotary encoder so that
its groove      comes to the position 
shown in the figure.
1
Insert the shaft gear up to the 
position where its shaft comes
out by 5 mm.
g
g
h
h
f
f
f
7
gear (U/D)
8
screw
(PTPWH M2.6)
q;
screw
(PTPWH M2.6)
circle mark
circle mark
swing gear
gear (RV)
Fig. A
9
gear (RV)
Note: Align swing gear, a circle mark
on the gear (U/D), and the teeth
of gear (RV) to the position 
showing in the Fig. A.
15
SCD-C222ES
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 indicator 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 setting
the test mode. Be sure to turn the 
[        AMS        ]
 dial to select 59
Table Init and push 
[        AMS        ]
 once. When initialization of the
table is completed, the message “INITAIL OK” appears several sec-
onds on the fluorescent indicator tube. 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.
l
L
l
L
l
L
l
L
l
L
l
L
l
L
l
L
l
L
l
L
A
A
A
16
SCD-C222ES
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 0
t1, 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 (page 17)
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
SetDiscMode
Enter disc type    CD setting
CD forced setting
63
Enter disc type    SL setting
SL forced setting
64
Enter disc type    DD setting
DD forced setting
65
Enter disc type    HYBRID HD setting
HD forced setting
66
Enter disc type    HYBRID CD setting
CD forced setting
6F
Download
Not used for the servicing
A
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