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Model
HCD-RG55 HCD-RG55S MHC-RG55 MHC-RG55S
Pages
71
Size
4.49 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-rg55-hcd-rg55s-mhc-rg55-mhc-rg55s.pdf
Date

Sony HCD-RG55 / HCD-RG55S / MHC-RG55 / MHC-RG55S Service Manual ▷ View online

16
HCD-RG55/RG55S
3-12. BASE UNIT
3-13. DRIVER BOARD, MOTOR BOARD, SENSOR (CD) BOARD
base unit
qs
6
two screws (+PTPWH M2.6)
7
two springs (insulator), coil
0
two springs (insulator), coil
2
shild cover
3
screw (+PTPWH M2.6)
5
screw (DIA. 12)
8
two screws (+BVTP 2.6
 
×
 8)
qs
two insulators
4
holder (BU) assy
qa
two insulators
9
two stoppers (BU)
1
screw (+BVTP 2.6
 
×
 8)
qa
 Pull-out the disc tray.
6
two
 screws (+BVTP 2.6 
×
 8)
qs
screw (+PTPWH 2.6
 
×
 8)
qd
tray
4
screw (+BVTP 2.6
 
×
 8)
1
screw 
(+BVTP 2.6
 
×
 8)
qf
screw 
(+BVTP 2.6
 
×
 8)
5
plate
3
CN702 (flat type)
8
CN721(flat type)
0
MOTOR board
qg
SENSOR (CD) board
2
DRIVER board
7
Remove the two solderings of motor.
9
CN722
17
HCD-RG55/RG55S
[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  x  ,  GROOVE  , and  ?/1  simultaneously.
2. The fluorescent indicator tube displays “COLD RESET” and
the set is reset.
[CD Ship Mode]
SECTION 4
TEST MODE
• This mode moves the pickup to the position durable to vibration.
Use this mode when returning the set to the customer after repair.
Procedure:
1. Press  ?/1  button to turn the set ON until “STANDBY”
appears.
2. Press  CD  button and  ?/1  button simultaneously.
3. When you releaset he buttons, a message “LOCK” is displayed
on the fluorescent indicator tube, and the CD ship mode is set.
[Hot Reset]
• This mode resets the set with the preset data kept stored in the
memory. The hot reset mode functions same as if the power cord
is plugged in and out.
Procedure:
1. Press three buttons  x  ,  GAME EQ  , and  DISPLAY
simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Press  ?/1  button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons  x  ,  GAME EQ  , and  OPEN/CLOSE
simultaneously.
4. The CD service mode is selected.
5. With the CD in stop status, press the > key to move the pickup
to outside track, or turn the shuttle knob counter-clockwise to
inside track.
6. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Cold reset.
Note:
 • Always move the pickup to most inside track when exiting
from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear
can be chipped.
[Change-over of AM Tuner Step between 9 kHz and 10
kHz]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press  ?/1  button to turn the set ON.
2. Select the function “TUNER”, and press  TUNER/BAND
button to select the BAND “MW”.
3. Press  ?/1  button to turn the set OFF.
4. Press  ENTER  and  ?/1  buttons simultaneously, and the
display of fluorescent indicator tube changes to “AM 9 k STEP”
or “AM 10 k STEP”, and thus the channel step is changed over.
[GC Test Mode]
• This mode is used to check the software version, FL tube, LED,
keyboard, headphone and volume.
Procedure:
1. Press three buttons  x  ,  GAME EQ  and  DISC2
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When  GAME EQ  and  DISC2  are pressed at the same time,
the key number check mode starts up. In this mode, the key
numbers of each key series are displayed.
4. In the key check mode, the fluorescent indicator tube displays
“KEY 000”. Each time a button is pressed.
5. When  GAME EQ  and  DISC2  are pressed at the same time,
the key count check mode starts up. In this mode, the message
“KEY CNT @@” is displayed on the FL display tube. When
each button is pressed, the key row number is incremented first.
Then the key value is then incremented. However, one the
button is pressed, the key value cannot be counted.
6. When  GAME EQ  and  DISC2  are pressed at the same time,
the headphones check mode starts up. In this mode, the
message “H_P ON” is displayed when the headphones are in-
serted. When the headphones are not inserted, the message “H_P
OFF” is displayed.
7. When  GAME EQ  and  DISC2  are pressed at the same time,
the volume check mode starts up. In this mode, the message
“VOLUME STOP” is displayed on the FL display tube. When
the volume control knob is rotated in the positive (+) direction,
the message “VOLUME UP” is displayed. When the volume
control knob is rotated in the negative (–) direction, the
message “VOLUME DOWN” is displayed.
8. In order to quit the mode, either press  GAME EQ  and  DISC2
at the same time or press the three buttons at the same time as in
step 1.
9. To exit from this mode, cold reset or disconnect the power cord.
18
HCD-RG55/RG55S
[MC Test Mode]
• This mode is used to check operations of the respective sections
of Amplifier, TUNER, CD and Tape.
Procedure:
1. Press the  ?/1  button to turn on the set.
2. Press the three buttons of  x  ,  GAME EQ  and  DISC 3
simultaneously.
3. A message “TEST MODE” appears on the FL display tube.
• The messages VACS1 to VACS5 are displayed when the VACS
is changed in this mode.
• The number of repeats of TAPE and CD is set to the infinite
number as the default setting.
4. When  MUSIC EQ  button is pressed, GEQ increases to its
maximum and a message “GEQ MAX” appears.
5. When  MUSIC EQ  button is pressed, GEQ decreases to its
minimum and a message “GEQ MIN” appears.
6. When  EFFECT ON/OFF  button is pressed, GEQ is set to flat
and a message “GEQ FLAT” appears.
7. In the test mode, the default-preset channel is called even when
the TUNER is selected and an attempt is made to call the preset
channel that has beeen stored in memory, by operating the
Shuttle knob. (It means that the memory is cleared.)
8. When a tape is inserted in the Deck B and the TAPE B function
is selected, and when the  REC PAUSE/START  buttton is
pressed twice, recording starts.
The VIDEO function is selected automatically as the input
source.
9. Select the desired loop by pressing the  PLAY MODE  button
in the TAPE B function. Insert a test tape AMS-110A or AMS-
RO to Deck A.
10. Press the  SPECTRUM  button to enter the AMS test mode.
11. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting the AMS signal twice.
12. Then the REW AMS is checked and the mechanism is shut off
after detecting the AMS signal twice.
13. When the check is complete, a message of either OK or NG
appears.
14. When the two buttons of  SPECTRUM  and  DISC1  are pressed
at the same time in any function modes, either the “VACS ON”
display to enable the VACS function or the “VACS OFF”
display to disable the VACS function can be selected.
15. When you want to exit this mode, press the  ?/1  button twice.
The cold reset is enforced at the same time.
[Microprocessor version display]
• If the following operation is performed during the POWER OFF
in the modes other than the POWER SAVE mode (i.e., while the
Demo display shows the watch time).
1. When three buttons of  STOP  ,  GAME EQ  ,  MOVIE EQ  are
pressed at the same time, the model name and destination are
displayed as “GYO AS1A3”.
2. When three buttons of  STOP  ,  GROOVE  are pressed at the
same time, the MC and the GC microprocessor version
numbers are displayed as “V01.02:01.12.24”.
19
HCD-RG55/RG55S
[Aging mode]
This mode can be used for operation check of CD section and tape deck section.
• If an error occurred:
The aging operation stops and display status.
• If no error occurs:
The aging operation continues repeatedly.
1. Operating method of Aging Mode
Turn on the main power and select “CD” of the function.
1) Set a disc in DISC1 tray. Select ALL DISC CONTINUE, and REPEAT OFF.
2) Load the tapes recording use into the decks A and B respectively.
3) Press three buttons  x  ,  GAME EQ  , and
 DISC SKIP EX-CHANGE  simultaneously.
4) Aging operations of CD and tape are started at the same time.
5) To exit the aging mode, perform [Cold Reset].
2. Aging Mode in CD section
1) Display state
• No error occurs
Display
Note:
: Number of aging operations
Error display
E ** s ## $$ %%
1 2 3 4 5
*
*
*
*
AGING
*
*
*
*
1
 
**
The error No. 00 indicates the newest error. As the error No. increases, it means the older error.
When you want to retrieve the error history, press the  PLAY MODE  button in the case of mechanism error.
Or press the  REPEAT  button in the case of NO DISC error.
2
 s
M: Mechanism error
D: No disc error
3
 
##
Don’t care
01: FOCUS ERROR
02: GFS ERROR
03: SETUP ERROR
4
 
$$
High order digits only
01: NO DISC judgment without chucking retry
D: Stopped during closing due to problems other than mechanism.
02: NO DISC judgment after chucking retry
E: Stopped during opening due to problems other than mechanism.
C: Stopped during chucking due to problems other than mechanism.
F: Stopped during EX-opening due to problems other than mechanism.
5
 
%%
Emergency related errors (High order digits only)
Status at the time of NO DISC judgment
1: Stopped during chuck-up
(High order digits only)
2: Stopped during chuck-down
1: STOP
3: Time out by EX-OPEN
2: SETUP
5: Time out by EX-CLOSE
3: TOC READ
4: ACCESS
5: PLAY BACK
6: PAUSE
7: MANUAL SEARCH (PLAY)
8: MANUAL SEARCH (PAUSE)
When the buttons  x  ,  ENTER  and  DISC 1  are pressed simultaneously, number of time of the mechanism error and the NO DISC error
can be checked.
Display: 
EMC**EDC**
**
: Number of times of error (Maximum three times)
EMC : Mechanism error
EDC : No DISC error
• When aging operation is complete, be sure to perform the MC Cold Reset to reset the error history.
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