DOWNLOAD Sony CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US Service Manual ↓ Size: 5.32 MB | Pages: 48 in PDF or view online for FREE

Model
CDX-GT420U CDX-GT424U CDX-GT427UE CDX-GT470U CDX-GT470US
Pages
48
Size
5.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-gt420u-cdx-gt424u-cdx-gt427ue-cdx-gt470u-cdx-g.pdf
Date
PREV: Sony XM-GTR2022 Service Manual

Sony CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US Service Manual ▷ View online

CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
17
3-9.   SLED  MOTOR  ASSY
sled mtor assy
sled mtor assy
spring
spring
stand
stand
turn table
three serration screws
 (M 
2 
× 3)
 three 
serration 
screws
 (M 
2 
× 3)
Note: Place the stand with care not to touch the turn table.
Note: 
Never remove these parts since they were adjusted.
Note for Assembly
Note: Take care to prevent the chassis from being bent 
 
when tightening the three machine screws.
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
18
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-GT420U/GT424U/GT427UE/GT470U/GT470US
19
SECTION  4
DIAGNOSIS  FUNCTION
Description of the Diagnostics function:
1.  Setting the Diag display mode 
 
With the power off, press the [4] button, [5] button, and [4] 
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 [
M >/
SEEK +] or [
. m/
SEEK –] keys.
4.  Contents of each display mode
4-1.  Reset count display mode
4-2.  Reset count by watchdog timer display mode
4-3.  Number of connected units display mode
The display mode is switched by each rotation of [2/ALBM+] or 
[1/ALBM–] keys during the number of connected units display 
mode.
4-4.  Operating hours display mode
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
      9 9
      9 9
     9 9 9
    9 9 9 9
      9 9
   9 9 9 9 9
USB error information display
      9 9
Reset count 
(in hexadecimal format)
Diag code
01: Reset count
      9 9
Reset count 
(in hexadecimal format)
Diag code 
02: Number of resets by watchdog timer
      9 9
Show the number of connected units for 
CD-C, MD-C and XM respectively from 
the rightmost (in hexadecimal format).
Recency of information
1-3: 1 represents the latest.
Diag code
03: Number of connected unit.
     9 9 9
No. of connected units history 1 (latest) display
No. of connected units history 3 display
No. of connected units history 2 display
     9 9 9
     9 9 9
     9 9 9
Operating hours 
(in hexadecimal format)
Diag code
04: Operating hours
    9 9 9 9
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
20
4-5.  CD error information display mode
4-5-1.  Error description
4-5-2.  Operating hours
The display mode is switched by each rotation of [2/ALBM+] or 
[1/ALBM–] keys during the CD error information display mode.
4-6.  OFFSET/FAILURE error display mode
The display mode is switched by each rotation of [2/ALBM+] or 
[1/ALBM–] keys during the OFFSET/FAILURE error display 
mode.
4-7.  USB error information display mode
4-7-1.  Error description
Error information
Indication
Description
1X
SERVO ERROR
3X
LOADING ERROR
4X
TRACK JUMP
5X
TEXT ERROR
FX
MECHA ERROR
Error information
Indication
Description
15
DEVICE ERROR
17
FILE ERROR 
(NO MUSIC)
1E
POWER ON 
ERROR
1F
BOOT ERROR
3A
INVALID EJECT 
ERROR
43
READ ERROR
44
INVALID 
FORMAT FILE
FA
NOT SUPPORT 
DEVICE
FB
HUB NOT 
SUPPORT
Error description 
(in hexadecimal 
format)
Recency of information
1-3: 1 represents the latest.
Diag code
05: CD error information
      9 9
Operating hours
Recency of information
1-3: 1 represents the latest.
Diag code
05: CD error information
    9 9 9 9
Operating hours
Recency of information
1-3: 1 represents the latest.
Diag code
06: OFFSET/FAILURE
Error description 
(0: OFFSET, 1: FAILURE)
   9 9 9 9 9
OFFSET/FAILURE error history 1 (latest)display
OFFSET/FAILURE error history 3display
OFFSET/FAILURE error history 2display
   9 9 9 9 9
   9 9 9 9 9
   9 9 9 9 9
Error description 
(in hexadecimal 
format)
Recency of information
1-5: 1 represents the latest.
Diag code
07: USB error information
      9 9
CD error info history 1 (latest)
Error description plus error details display
CD error info history 3
Operating hours display
CD error info history 3
Error description plus error details display
CD error info history 2
Operating hours display
CD error info history 2
Error description plus error details display
CD error info history 1 (latest)
Operating hours display
    9 9 9 9
      9 9
    9 9 9 9
      9 9
    9 9 9 9
      9 9
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