DOWNLOAD Sony CDP-S3 / MHC-S3 Service Manual ↓ Size: 2.13 MB | Pages: 34 in PDF or view online for FREE

Model
CDP-S3 MHC-S3
Pages
34
Size
2.13 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cdp-s3-mhc-s3.pdf
Date

Sony CDP-S3 / MHC-S3 Service Manual ▷ View online

CDP-S3
8
3-4.
MAIN  BOARD
3-5.
FRONT  PANEL  SECTION
2
connector
(CN401)
1
wire (flat type) (21 core)
(CN301)
2
two connectors
(CN101, 102)
5
MAIN board
3
screw
(BVTP3 
×
 8)
4
lug
3
screw
(BVTP3 
×
 8)
2
connector
(CN701)
3
two screws
(BVTP3 
×
 8)
2
three screws
(BVTP3 
×
 8)
3
two claws
1
connector
(CN401)
4
front panel section
3
claw
CDP-S3
9
3-6.
PANEL (L)  BOARD,  PANEL (R)  BOARD
3-7.
LID (CD)
5
two claws
4
four screws
(BVTP2.6 
×
 8)
6
PANEL (R) board
1
five screws
(BVTP2.6 
×
 8)
3
PANEL (L) board
2
two claws
3
lid (CD)
4
spring (CD)
1
screw
(BVTP2.6 
×
 8)
2
bracket (LID) assy
10
CDP-S3
SECTION  4
TEST  MODE
Note:
Use flowing buttons in the test mode.
no mark : Button of CD unit (CDP-S3)
*1
: Button of amplifier unit (TA-S7AV or TA-S3)
*2
: Button of tuner unit (ST-S5 or ST-S3)
[CD Delivery Mode]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1. Press the 
I
/
*
1
 button to turn the power on.
2. Turn the 
[FILE SELECT]
 *
1
 knob to set the CD function.
3. While pressing the 
[EQ ON/OFF]
 *
1
 button, press the 
I
/
1
 *
1
button.
4. The message “LOCK” is displayed on the fluorescent indica-
tor tube of tuner unit and turn the power off automatically, and
the CD delivery mode is set.
[GC Test  Mode]
Enter the GC Test Mode
Procedure 1:
1. Press the 
I
/
1
 *
1
 button to turn the power on.
2. While pressing the both 
[PLAY MODE]
 and 
[   ]
 buttons, press
the 
[   ]
 (DISC 1) button.
3. LEDs and fluorescent indicator tube are all turned on of all
units.
Procedure 2:
1. Press the 
I
/
1
 *
1
 button to turn the power on.
2. While pressing the both 
[STEREO/MONO]
 *
2
 and
[CINEMA STUDIO C]
 *
buttons, press the 
[CLOCK/TIMER]
*
2
 button.
3. LEDs and fluorescent indicator tube are all turned on of all
units.
Version Display Mode
Procedure:
1. Enter the GC test mode.
2. Each time the 
[DISC 1]
 or 
[TUNER MEMORY]
 *
2
 button is
pressed, microcomputer or mechanism deck version is dis-
played of each unit.
3. Press the 
[DISC 3]
 or 
[TUNING +]
 *
2
 button to detail is dis-
played the version.
Key Check Mode
Procedure:
1. Enter the GC test mode.
2. Press the 
[DISC 2]
 or 
[TUNING  --]
  *
2
 button to set the key
check mode, and displays “K 0 J 0 V 0” on the fluorescent
indicator tube of tuner unit.
3. All buttons are pressed of CD unit, all LEDs are blinking of
CD unit. (not change the display of fluorescent indicator tube)
Releasing the GC Test Mode
To release from this mode, press three buttons in the same manner
as entering this mode or disconnect the power cord.
x
Z
[CD Service Mode]
• This mode can run the CD sled motor optionally. Use this mode,
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the 
I
/
1
 *
1
 button to turn the power on.
2. Turn the 
[FILE SELECT]
 *
1
 knob to set the CD function.
3. While pressing the both 
[PLAY MODE]
 and 
[   ]
 buttons, press
the 
[      ]
 button.
4. Set to the CD service mode.
5. With the CD in stop status, press the 
[      ]
 button to move the
optical pick-up to outside track, or press the 
[     ]
 button to
inside track.
6. To release from this mode, perform as follows.
1) Move the optical pick-up to the most inside track.
2) Disconnect the power cord.
Notes:
• Always move the optical pick-up to most inside track when
releasing from this mode. Otherwise, a disc will not be un-
loaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.
[CD Cancellation Mode of Repeat Limitation]
• This mode can cancel the CD repeat limitation (5 times).
Procedure:
1. Press the 
I
/
1
 *
1
 button to turn the power on.
2. Turn the 
[FILE SELECT]
 *
1
 knob to set the CD function.
3. While pressing the both 
[PLAY MODE]
 and 
[   ]
 buttons, press
the 
[REPEAT]
 button.
4. CD repeat limitation is canceled.
5. To release this mode, disconnect the power cord.
x
.
M
m
x
11
CDP-S3
SECTION  5
ELECTRICAL  ADJUSTMENTS
Note :
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use LUV-P01 (4-999-032-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M
 impedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
S-Curve Check
Procedure :
1. Connect an oscilloscope to TP (FEO).
2. Connect between TP (FEI) and TP (DVC) ( 1.65 V) by lead
wire.
3. Turn Power switch on.
4. Load a disc (LUV-P01) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
5. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And confirm peak to peak level
within 2 
±
 0.5 Vp-p.
6. After check, remove the lead wire connected in step 2.
Note :
• Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF Level Check
Procedure :
1. Connect an oscilloscope CH1 to TP (RFDC) and CH2 to TP
(RFAC).
2. Turn Power switch on.
3. Load a disc (LUV-P01) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF
signal level is correct or not.
Note :
Clear RF signal waveform means that the shape “ 
 ” can be clearly
distinguished at the center of the waveform.
BD board
Oscilloscope
TP(FEO)
TP(DVC)
symmetry
S-curve waveform
within 2 
±
0.5Vp-p
A
B
TP(RFDC)
TP(RFAC)
BD board
oscilloscope
TP(DVC)
E-F Balance (1 Track jump) Check
Procedure :
1. Connect an oscilloscope to TP (TEO) and TP (DVC).
2. Turn Power switch on.
3. Load a disc (LUV-P01) and playback the number nine track.
4. Press the  
N
  button. (Becomes the 1 track jump mode.)
5. Confirm that the level B and A (DC voltage) on the oscilloscope
waveform.
6. Adjust RV101 on the BD board so that the center of waveform
becomes the same voltage of DVC. (i.e.  A=0V)
Adjustment Location:
[BD BOARD] (Conductor Side)
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 0.65 
±
0.15Vp-p (RFDC)
1.1 
±
0.4Vp-p (RFAC)
TP(TEO)
TP(DVC)
BD board
oscilloscope
level=1.0 
±
0.5Vp-p
symmetry
A (DC voltage)
center of
waveform
B
DVC
1 track jump waveform
TP (TEO)
TP
(RFAC)
TP
(FEI)
TP
(RFDC)
TP (FEO)
IC101
IC103
RV101
TP (DVC)
1
15
30
1
20
21
40
60
80
41
61
16
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