DOWNLOAD Sony CDX-GT572 Service Manual ↓ Size: 5.55 MB | Pages: 38 in PDF or view online for FREE

Model
CDX-GT572
Pages
38
Size
5.55 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-gt572.pdf
Date
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CDX-GT572
13
3-10.  OPTICAL  PICK-UP  SECTION
3-11.  OPTICAL  PICK-UP
optical pick-up section
Note: Be careful not to touch the lens and hologram 
 
terminal when removing the optical pick-up section.
There is space at the end of the 
leaf spring (sub guide) to avoid 
contact with the slide.
pan tapping screw
 (M 
1.4 
× 2.5)
leaf spring (sub guide)
leaf spring (OP)
optical pick-up
lead screw assy
Notes for Assembly
Prevent the end of the 
leaf spring (sub guide) from being 
in contact with the OP slide base.
Prevent the end of the 
leaf spring (sub guide) from being 
in contact with the OP slide base.
CDX-GT572
14
4.  Contents of each display mode
4-1.  Reset count display mode
4-2.  Reset count by watchdog timer display mode
SECTION  4
DIAGNOSIS  FUNCTION
Description of the Diagnostics function:
1.  Setting the Diag display mode 
 
With the power off, press the [4/SHUF] button, [5] button, and 
[4/SHUF] button on the set body or the remote control (for 
more than 2 seconds) in turn. 
2.  Canceling the Diag display mode
 
During the Diag function mode, press the [OFF] button.
3.  Initial display in the Diag display mode
 
Just when the Diag mode is entered, “reset count” is displayed.
 
The display mode is switched by each rotation of [SEEK +/
M>
] or [SEEK –/
.m 
] buttons.
4-3.  Number of connected units display mode
The display mode is switched by each rotation of [ALBM+] or 
[ALBM–] buttons during the number of connected units display 
mode.
4-4.  Operating hours display mode
4-5.  CD error information display mode
4-5-1.  Error description
Reset count
(in hexadecimal format)
Diag code
01: Reset count
Reset count
(in hexadecimal format)
Diag code
02: Number of resets by watchdog timer
Shown the number of connected
units for CD-C, MD-C and XM
respectivery from the rightmost
(in hexadecimal format).
Recency of information
1 - 3: 1 represents the latest.
Diag code
03: Number of connected unit
No. of connected units history 1 (latest) display
No. of connected units history 3 display
No. of connected units history 2 display
Operating hours
(in hexadecimal format)
Diag code
04: Operating hours
Error information
Indication
Description
1X
SERVO ERROR
3X
LOADING ERROR
4X
TRACK JUMP
5X
TEXT ERROR
FX
MECHA ERROR
Error description
(in hexadecimal format)
Recency of information
1 - 3: 1 represents the latest.
Diag code
05: CD error information
Reset count display
OFFSET/FAILURE error display
CD error information display
Operating hours display
Number of connected units display
Reset count by watchdog timer display
CDX-GT572
15
4-5-2.  Disc type and operating hours
The display mode is switched by each rotation of [ALBM+] or 
[ALBM–] buttons during the CD error information display mode.
4-6.  OFFSET/FAILURE error display mode
The display mode is switched by each rotation of [ALBM+] or 
[ALBM–] buttons during the OFFSET/FAILURE error display 
mode.
Disc type 
Indication
Disc type
0
MP3
1
WMA
2
AAC
3
ATRAC
8
CD-DA
F
UNKNOWN
Operating hours
Recency of information
1 - 3: 1 represents the latest.
Diag code
05: CD error information
Disc type
CD error info history 1 (latest)
Error description plus error details display
CD error info history 3
Disc type plus operating hours display
CD error info history 3
Error description plus error details display
CD error info history 2
Disc type plus operating hours display
CD error info history 2
Error description plus error details display
CD error info history 1 (latest)
Disc type plus operating hours display
Operating hours
Recency of information
1 - 3: 1 represents the latest.
Diag code
06: OFFSET/FAILURE
Error description 
(0: OFFSET, 1: FAILURE)
OFFSET/FAILURE error history 1 (latest) display
OFFSET/FAILURE error history 3 display
OFFSET/FAILURE error history 2 display
CDX-GT572
16
For Schematic Diagram.
Note:
•  All capacitors are in 
μF unless otherwise noted.  (p: pF)
  50 WV or less are not indicated except for electrolytics 
and tantalums.
•  All resistors are in 
Ω and 
1
/
4
 W or less unless otherwise 
specifi ed.
•      
f  : internal component.
• 
C : panel designation.
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC  DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• 
A  : B+ Line.
• 
B  : B– Line.
•  Voltages and waveforms are dc with respect to ground 
under no-signal (detuned) conditions.
  no mark : FM
 ( 
) 
: 
MW
  < 
> : CD PLAY
•  Voltages are taken with a VOM (Input impedance 10 M
Ω).
  Voltage variations may be noted due to normal production 
tolerances.
•  Waveforms are taken with a oscilloscope.
  Voltage variations may be noted due to normal production 
tolerances.
•  Circled numbers refer to waveforms.
• Signal path.
 
J 
: CD PLAY
 
F : 
FM
 
f : 
MW
 
L : 
AUX
 
g : AUDIO
For Printed Wiring Boards.
Note:
• 
X  : Parts extracted from the component side.
• 
Y  : parts extracted from the conductor side.
•      
a  
: 
Through 
hole.
• 
 : Pattern from the side which enables seeing.
  (The other layers' patterns are not indicated.)
Caution:
Pattern face side:
(SIDE B)
Parts face side: 
(SIDE A)
Parts on the pattern face side seen from   
the pattern face are indicated.
Parts on the parts face side seen from   
the parts face are indicated.
Note:  The components identifi ed by mark 
0 or dotted 
line with mark 
0 are critical for safety. 
 
Replace only with part number specifi ed.
• Waveforms
– MAIN Board –
SECTION  5
DIAGRAMS
1.6 Vp-p
32.768 kHz
  IC501 
VM (XOUT)
2.5 Vp-p
18.432 MHz
  IC501 
JE (OSCOUT)
1 V/DIV, 50 nsec/DIV
1 V/DIV, 50 nsec/DIV
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