DOWNLOAD Sony CDP-CX57 Service Manual ↓ Size: 3.26 MB | Pages: 58 in PDF or view online for FREE

Model
CDP-CX57
Pages
58
Size
3.26 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cdp-cx57.pdf
Date

Sony CDP-CX57 Service Manual ▷ View online

– 9 –
BASE  UNIT
BD  BOARD,  SLED  MOTOR  (M102)
1
wire (flat type) (16 core)
(CN101)
8
gear cover
2
screw
(B2 
×
 5)
7
three claws
4
BD board
3
Removal
four solders.
sled motor
(M102)
0
two screws
(2 
×
 3)
5
claw
9
gear (B) (RP)
6
gear (A) (S)
1
two screws 
(BTP2.6 
×
 8)
6
four screws 
(PTPWH2.6 
×
 8)
3
screw
(BTP2.6 
×
 10)
2
bracket
4
reinforcement (small)
5
two tention springs
7
base unit
– 10 –
OPTICAL  PICK-UP  (KSS-213B/S-N)
3
Remove the optical
pick-up to direction 
of the arrow 
A
.
A
1
claw
2
sled shaft
– 11 –
SECTION 4
TEST MODE
ADJ MODE
1. Press the
I
/
u
button to turn ON the power, and open the front
cover.
2. Place the CD on the slit, close the front cover, and chuck the
the CD.
3. Press the
I
/
u
button to turn OFF the power.
4
Disconnect the power supply from the outlet.
5. Short-circuit the test point (TP  ADJ) and test point (TP GND)
of the MAIN board with a lead wire.
6. Insert the power plug into the outlet.
The CD is played back automatically and the ADJ mode is set.
• Prohibits high speed search during accessing
• Ignores even if GFS becomes L
ADJ Mode Special Function Table
(The buttons shown in the (
) function only when the remote
commander provided is used.)
Button
Function
(3)
(8)
CHECK
CLEAR
Tracking servo, sled servo OFF
Tracking servo, sled servo ON
Observation mode during S
Automatic eccentricity measurement (Not used for servicing)
Display of special functions in ADJ mode
• Observation mode during S
When this mode is set, the below will be displayed. *1
• Automatic eccentricity measurement (Not used for servicing)
When this mode is set, the below will be displayed.The
Sokuteichu count down display will be counted down from 4 to
to 1 *2.After counting down, the eccentricity value will be
displayed *3.
FLUORESCENT INDICATOR TUBE, LED ALL LIT,
AND KEY CHECK MODE
1. Short-circuit the test point (TP ADJ) and test point (TP AFADJ)
of the MAIN board with a lead wire.
2. Insert the power plug into the outlet. The whole fluorescent
indicator tube lights up.
When the SRAM is faulty, “SRAMNG” will be displayed.
3. Pressing the
I
/
u
button sets the key check mode.
All buttons have individual button numbers.
When a button is pressed, the button number is counted up
and  displayed.
Buttons and Corresponding Button Numbers
CLEAR
CHECK
FADER
MEMO SEARCH
INPUT
TIME/TEXT
PUSH ENTER
±
REPEAT
PLAY MODE
I
/
u
X-FADE
NO DELAY
GROUP 5
GROUP 4
GROUP 3
GROUP 2
GROUP 1
GROUP FILE
·
P
p
PLUS ONE
MEGA CONTROL
DISC/CHARACTER
Button
Button Number or Display
ALL DISCS
S - J I   m o d e
*1
CD1
ALL DISCS
Sokuteichu count down display
TRACK
MIN
SEC
NEXT
DISC
DISC
CD1
Sokuteichu -4
*2
ALL DISCS
CD1
H e n s hin   0 2 1
*3
Eccentricity value
1 DISCS
DISC
CD1
**
**
Count up display
Displays button number
0
1
2
3
4
5
6
8
9
14
15
16
17
18
24
25
26
27
28
29
All lit (LED lights up)
Partially lit 1 (LED lights up)
Partially lit 2
LED lights up
Partially lit 3 (LED lights up)
Partially lit 4
Each time JOG is rotated, GROUP FILE 1 2 3 4
5 is displayed on the fluorescent indicator tube,
and 1, 2, 3, 4, 5 light up one by one, and GROUP
LED 1, 2, 3, 4, 5 lights up one by one.
Clockwise : GROUP FILE 1
n2n3n4n5
Counterclockwise : GROUP FILE
5
n4n3n2n1
STANDBY LED OFF
PUSH OPEN
(DOOR SW ON)
STANDBY LED ON
PUSH OPEN
(DOOR SW OFF)
– 12 –
Partially lit 1
Partially lit 2
Partially lit 3
Partially lit 4
FLUORESCENT INDICATOR TUBE AND LED
CHECK MODE
This mode is set by pressing the
I
/
u
button while pressing the
[CHECK]
 and 
[PLUS ONE]
 buttons in order in the power-off
(standby) state.
The whole fluorescent indicator tube lights up, and the 
[STANDBY]
,
[MEGA CONTROL]
[GROUP1-5]
[PLUS ONE]
· and
 
P  LEDs light up.
This mode can be exited by pressing the
I
/
u
button.
SHIPMENT  MODE
(Set to this mode when returning the unit to the
user.)
This mode is set by pressing the
I
/
u
button while pressing the
[PUSH ENTER]
 and 
[PLUS ONE]
 buttons  in order in the power-
off (standby) state.
The power goes off automatically after the SRAM is all-erased
and the BD is opened (loading out state).
Test points and connecting points:
[MAIN BOARD]  – CONDUCTOR SIDE –
AGING MODE
• Mode which repeatedly changes and plays back discs automati-
cally in the unit.
• It will repeat aging as long as no errors occur.
• If an error occurs during aging, it will stop all servos, motors,
etc. instantaneously, display the error number, and stop opera-
tions. However, the stopping conditions differ according to
whether the unit is equipped with the “self-protection function
during errors” described later.
The function serves to maintain the state of the unit when errors
occur.
Sequence of Aging Mode
$
$
$
$
$
$
$
$
$
Order of Disc Change
 (1 cycle takes 3 minutes)
$
$
$
1. No. 51
2. No. 20
3. No. 40
4. No. 30
5. No. 10
6. No. 40*
$
$
$
$
1. Disc change
2. Load in
3. TOC read
4. Access of last track
5. 3 second playback
6. Access of first track
7. 3 second playback
8. Load out
*
DISC No. 40 chucks twice during one cycle.
To differentiate,  the “
[2nd]
” on the block indicator of the
fluo rescent indicator tube will light up during the second
chucking.
Special Functions in Aging Mode
There are some useful function in the aging mode.
• Disc setting mode*1
• Switching of use/disuse of protection function in errors *2
• Aging cycle count function *3
*1 Disc setting mode:
5 discs are set before setting the aging mode. This mode makes
the setting of these discs more easy.
*2 Switching of use/disuse of protection function in errors:
Function which voluntarily corrects errors which occur dur-
ing normal operations by retries.
If this function is not provided, all operations will be stopped
without retiring. It is suitable for checking errors with low re-
producibility.
If this function is provided, and errors can be corrected by
retries, aging will be continued without stopping.
(The normal aging should be performed with “be”.)
1 DISCS
CD1
  A   B   C   D   E   F
G
1 DISCS
CD1
1 DISCS
2nd
CD1
**
1 DISCS
CD1
**
GROUP FILE
1
TP
(GND)
TP
(AFADJ)
IC201
CN704
CN702
IC501
R504
R505
TP (ADJ)
Page of 58
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