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Model
HCD-GX470 HCD-GX570 MHC-GX470 MHC-GX570XM
Pages
87
Size
6.25 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-gx470-hcd-gx570-mhc-gx470-mhc-gx570xm.pdf
Date

Sony HCD-GX470 / HCD-GX570 / MHC-GX470 / MHC-GX570XM Service Manual ▷ View online

HCD-GX470/GX570
16
3-14. MOTOR (TB)  BOARD
6
Remove the two solderings of motor.
8
MOTOR (TB) board
7
table motor assy (M741)
5
two screws
(BTTP (M2.6))
4
3
wire (flat type) (5 core) (CN742)
1
stopper
2
stopper
3
Remove the two solderings of motor.
4
MOTOR (LD) board
1
belt (loading)
5
loading motor assy (M751)
2
two screws
(BTTP (M2.6))
3-15. MOTOR (LD)  BOARD
17
HCD-GX470/GX570
SECTION  4
TEST  MODE
COLD  RESET
The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning the
set to the customer.
Procedure:
1. Press three buttons of
s
7
  and [DISC 1] simultaneously.
2. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
TUNING  STEP  CHANGE-OVER
A step of AM tuning interval can be changed over between 9 kHz
and 10 kHz.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press the [TUNER/BAND] button to select “AM”.
3. Press the
I
/1
button to turn the power off.
4. Press two buttons of [TUNING --] and
I
/1
 
 simultaneously.
5. The message “AM 9K STEP” or “AM 10K STEP” is displayed
on the fluorescent indicator tube, and thus the tuning interval
is changed over.
CD  SHIP (LOCK)  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. Press the [CD] button to select “CD”.
3. Press two buttons of 
7
 and [POWER] simultaneously.
4. The message “LOCK” is displayed on the fluorescent indicator
tube, and the CD ship mode is set.
CD  SHIP (LOCK)  MODE  &  COLD  RESET
This mode is used to perform CD ship (lock) mode and cold reset
simultaneously.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press the [CD] button to select “CD”.
3. Press three buttons of
s
, [CD] and 
 
A
  simultaneously.
4. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
ANTITHEFT  LOCK  MODE
This mode is used to unable to take sample disc out of disc table in
the shop.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press the [CD] button to select “CD”.
3. Press two buttons of
s
and 
 
A
  for 5 seconds.
4. The message “LOCKED” is displayed on the fluorescent
indicator tube and the disc table is locked. (Even if pressing
the
A
button, the message “LOCKED” is displayed on the
fluorescent indicator tube and the disc table is locked)
5. To release this mode, press two buttons of
s
and
A
for 5
seconds.
6. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the disc table is unlocked.
AMP  TEST  MODE (GX470  ONLY)
This mode is used to display the parameter of amplifier IC and
display the VACS status.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press three buttons of
s
,  
7
  and 
 
A
  simultaneously.
3. When the AMP test mode is activated, the message “AMP
TEST IN” is displayed on the fluorescent indicator tube
momentarily, then amplifier adjustment mode is displayed on
the fluorescent indicator tube.
4. Press the [REC PAUSE/START] button to changed over between
VACS status display mode and the amplifier IC parameter
display mode.
5. In this mode, press the [ENTER] button to changed over DBFB
on/off, and “DBFB ON” or “DBFB OFF” is displayed on the
fluorescent indicator tube.
6. In this mode, press the [SURROUND] button to changed over
surround on/off, and “SURROUND ON” or “SURROUND
OFF” is displayed on the fluorescent indicator tube.
7. In this mode, press the [EQ BAND] button to enter the equalizer
adjustment mode.
In the equalizer adjustment mode, press the [EQ BAND] button
to change over the adjustment band as LOW/MID/HIGH. And
turn the multi jog knob to adjust the equalizer level of each
bands.
8. To release the amplifier IC parameter display mode or equalizer
adjustment mode, press the
I
/1
button to the power off.
MC  TEST  MODE (GX470  ONLY)
This mode is used to check operations of microprocessor.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press three buttons of
s
,  
7
  and [DISC 3] simultaneously.
3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.
4. Turn the multi jog knob clockwise, the message “ALL EQ
MAX” is displayed on the fluorescent indicator tube
momentarily and turn the multi jog knob counter-
clockwise, the message “ALL EQ MIN” is displayed on
the fluorescent indicator tube momentarily.
5. Press the [ENTER] button, the message “ALL EQ FLAT” is
displayed on the fluorescent indicator tube momentarily.
6. Turn the [VOLUME] knob clockwise, the message “VOLUME
MAX” is displayed on the fluorescent indicator tube
momentarily and turn the [VOLUME] knob counterclockwise,
the message “VOLUME MIN” is displayed on the fluorescent
indicator tube momentarily.
7. Press the [REC PAUSE/START] button to changed over VACS
on/off.
8. Press the
I
/1
button to release from this mode, then cold reset
is performed.
18
HCD-GX470/GX570
VERSION  DISPLAY  MODE
This mode is used to check the model, destination and software
version.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press three buttons of
s
 and [DISC 2] simultaneously.
3. Fluorescent indicator tube, and LEDs are all turned on.
4. Press the [REC PAUSE/START] button to display the software
version and year, month, day of the software creation.
5. Press the [CD SYNC] button to display the model and destination.
6. To release this mode, press three buttons of
s
  , 
7
  and
[DISC 2] simultaneously.
CD  ERROR  CODE  DISPLAY  MODE (GX470  ONLY)
This mode can be used for error code display of CD section.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press the [CD] button to select “CD”.
3. Press three buttons of
s
, [CD] and [DISC 1] simultaneously.
4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.
5. Press the [REC PAUSE/START] button to changed over between
optical pick-up error code display mode and mechanism deck
error code mode.
6. Turn the multi jog knob to change over display of  error history.
7. To release this mode, press the
I
/1
button to turn the power
off.
1. Mechanism Deck Error Code Mode
When this mode is entered, mechanism deck error code is displayed
with the 10-character format on the fluorescent indicator tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, “M” is displayed on
the fluorescent indicator tube.
The second digit from the left indicates:
(Error history number display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display
Status
0
0
No error
0
8
Table operation time-out (Table does not move to the target
position within the specified time)
1
6
In the chucking down operation, the operation was retried
by the maximum number of times but the operation could
not be completed
1
7
In the chucking up and down operation, the reverse
recovery processing was attempted but it could not be
recovered
1
8
In the chucking up operation, the operation was retried by
the maximum number of times but the operation could not
be completed
2
0
Loading operation time-out (Table does not move to the
target position within the specified time)
2
2
As the chuck was in the ex-open status at the initialization,
the closing was attempted but could not be completed
The 5th and 6th digit from the left indicates:
(Present status display)
The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.
Display
Status
0
1
Open completion status
0
2
From open status, the movement to chucking down position
is under way
0
3
From chucking down position, the open operation is under
way
0
4
Chucking down completion status
1
0
The chucking down operation is under way
1
1
The chucking up operation is under way
1
2
Close completion status
1
3
From close status, the ex-open operation is under way
1
4
From ex-open status, the close operation is under way
1
8
Ex-pen completion status
The 7th and 8th digit from the left indicates:
(Motor status display)
The 7th and 8th digit from the left indicates which motor output
status when an error occurred is indicated.
Display
Status
×
0
No table motor output
×
1
Table motor forward output
×
2
Table motor backward output
×
3
Table motor break output
0
×
No loading motor output
1
×
Loading motor forward output
2
×
Loading motor backward output
3
×
Loading motor break output
The 9th and 10 th digit from the left indicates:
(Tray status display)
The 9th and 10th digit from the left indicates which target processing
when an error occurred is indicated.
Display
Status
0
1
Open operation
1
2
Close operation
1
8
Ex-open operation
19
HCD-GX470/GX570
5  REPEAT  LIMIT  CANCEL  MODE
Number of repeat for CD playback is 5 times when the repeat mode
is “REPEAT”. This mode is used to enables CD to repeat playback
for limitless times.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press the [CD] button to select “CD”.
3. Press three buttons of
s
, [CD] and 
7
 simultaneously.
4. The message “LIMIT OFF” is displayed on the fluorescent
indicator tube momentarily, CD repeat 5 limit is cancelled.
CD  POWER  MANAGE
This mode is used to changed over CD power on/off for decreasing
of reception noise in the tuner mode.
Procedure:
1. Press the
I
/1
button to turn the power on.
2. Press the [CD] button to select “CD”.
3. Press the
I
/1
button to turn the power off.
4. Press two buttons of
s
and
I
/1
simultaneously.
5. The message “CD POWER ON” or “CD POWER OFF” is
displayed on the fluorescent indicator tube, and CD power
on/off changed over in the tuner mode.
2. Optical Pick-up Error Code Mode
When this mode is entered, optical pick-up error code is displayed
with the 8-character format on the fluorescent indicator tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
fluorescent indicator tube.
The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display
Status
0
1
Not focused (TOC read without a disc)
0
2
GFS NG (TOC read with a disc chucked)
0
3
Start operation time-over
0
4
Defocused continuously (Defocused during TOC reading)
0
5
Q code not entered for specified time
0
6
Tracking not turned ON
0
7
Blank disc (Blank disc TOC read)
The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing when
a trouble occurred
Display
Contents
0
1
Power OFF in progress
0
2
Initialize in progress
0
3
Oscillation stopping
0
4
From oscillation stop, oscillation starting
0
5
Stopping
0
6
Stop operation is under way
0
7
Start operation in progress
0
8
TOC read in progress
0
9
Search operation is under way
0
A
Playback operation is under way
0
B
Pause operation is under way
0
C
Playback manual search operation is under way
0
D
Pause manual search operation is under way
0
E
The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)
Page of 87
Display

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