Sony HCD-RG550 / HCD-RG660 / MHC-RG550 / MHC-RG660 Service Manual ▷ View online
17
HCD-RG550/RG660
SECTION 3
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.
set to the customer.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GROOVE] and [POWER] simultaneously.
3. The message “COLD RESET” is displayed on the fluorescent
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GROOVE] and [POWER] simultaneously.
3. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
[TUNER STEP CHANGE-OVER]
(Except AEP and UK models)
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [TUNER BAND] key to select “AM”.
3. Press the [POWER] key to turn the power OFF.
4. Press two keys of [ENTER] and [POWER] simultaneously.
5. The message “9K STEP” or “10K STEP” is displayed on the
1. Press the [POWER] key to turn the power ON.
2. Press the [TUNER BAND] key to select “AM”.
3. Press the [POWER] key to turn the power OFF.
4. Press two keys of [ENTER] and [POWER] simultaneously.
5. The message “9K STEP” or “10K STEP” is displayed on the
fluorescent indicator tube, and thus the channel step is changed
over.
over.
[CD SHIP 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.
after repair.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press two keys of [CD] and [POWER] simultaneously.
4. The message “LOCK” is displayed on the fluorescent indicator
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press two keys of [CD] and [POWER] simultaneously.
4. The message “LOCK” is displayed on the fluorescent indicator
tube, and the CD ship mode is set.
[CHANGE-OVER FUNCTION OF MD/VIDEO]
• This mode is used to enable function of external input to change
over between MD and VIDEO.
Procedure:
1. Set to standby state.
2. Press two keys of [MD VIDEO ] and [POWER] simultaneously.
3. The message “MD” or “VIDEO” is displayed on the fluorescent
1. Set to standby state.
2. Press two keys of [MD VIDEO ] and [POWER] simultaneously.
3. The message “MD” or “VIDEO” is displayed on the fluorescent
indicator tube, and the function of external input is changed
over.
over.
[CD TRAY LOCK MODE]
• This mode is used to unable to take sample disc out of tray in the
shop.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Set disc on the tray.
4. While pressing the x key, press the Z key for 5 seconds.
5. The message “LOCKED” is displayed on the fluorescent
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Set disc on the tray.
4. While pressing the x key, press the Z key for 5 seconds.
5. The message “LOCKED” is displayed on the fluorescent
indicator tube and the tray is locked. (Even if pressing
the Z key, the message “LOCKED” is displayed on the
fluorescent indicator tube and the tray is locked)
the Z key, the message “LOCKED” is displayed on the
fluorescent indicator tube and the tray is locked)
6. To release from this mode, while pressing the x key, press
the Z key for 5 seconds.
7. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the tray is unlocked.
[AMP TEST MODE]
• This mode is used to set the parameter of AMP IC for adjustment
of tone quality and VACS level and display VACS status.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GAME EQ] and [EFFECT ON/OFF]
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GAME EQ] and [EFFECT ON/OFF]
simultaneously.
3. When the AMP test mode is activated, the message “AMP
TEST” is displayed on the fluorescent indicator tube
momentarily.
momentarily.
4. Press two keys of [GAME EQ] and [DISC 2] simultaneously, mode
is changed over to parameter setting of AMP IC and display of
VACS status.
VACS status.
5. When the VACS status, the message VACS level, VACS signal
level, and VACS signal hold level is displayed on the fluorescent
indicator tube.
indicator tube.
6. Press the [GROOVE] key, DBFB ON/OFF is changed over.
7. Press the [GAME MIXING] key, surround ON/OFF is changed
7. Press the [GAME MIXING] key, surround ON/OFF is changed
over.
8. Press the cursol
B and b key, EQ band is changed over to
LOW, MID or HIGH.
9. Press the cursol
V and v key, EQ curve adjustment value is
changed over between –8dB to +8dB.
10. To release from this mode, press two keys of [GAME EQ] and
[MOVIE EQ] simultaneously.
(
)
18
HCD-RG550/RG660
[AGING MODE]
• This mode can be used for operation check of CD section and
tape deck section.
CD section and tape deck section work in parallel.
CD section and tape deck section work in parallel.
If an error occurred:
The aging operation stops only an error occurred sections and
display then status.
display then status.
If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Set disc on the tray and set tape into the deck.
4. Set the “ALL DISCS” mode and “REV OFF” mode.
5. Press three keys of x , [GAME EQ] and [DISC SKIP/EX-CHANGE]
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Set disc on the tray and set tape into the deck.
4. Set the “ALL DISCS” mode and “REV OFF” mode.
5. Press three keys of x , [GAME EQ] and [DISC SKIP/EX-CHANGE]
simultaneously.
6. The message “AGING” is displayed on the fluorescent
indicator tube momentarily, then aging operations of CD and
tape are started at the same time.
tape are started at the same time.
7. To release from this mode, operate the “COLD RESET”.
1. Display at the Aging Mode
Display operating state of CD section and tape deck section
alternately.
If an error occurred, stop display which that section.
alternately.
If an error occurred, stop display which that section.
2. CD Section
The sequence during the aging mode is following as below.
Display at the aging mode is the same as the normal operation.
Display at the aging mode is the same as the normal operation.
Aging mode sequence (CD section) :
Start (from disc 1)
Disc chucking
TOC read
Play first track for 2 seconds
Play last track for 2 seconds
EX-change open/close
Open the disc tray
Disc skip
Close the tray
Change the next disc.
3. Tape Deck Section
The sequence during the aging mode is following as below.
If an error occurred, stop display that step.
If an error occurred, stop display that step.
Aging mode sequence (tape deck section) :
Rewind the tape A and B
“AAG-1 or 2”
Shut off
FWD play the tape A
“AAG-3”
2 minutes
Fast forward the tape A
“AAG-4”
Shut off or 20 seconds
REV play the tape A
“AAG-5”
2 minutes
Rewind the tape A
“AAG-6”
Shut off
FWD play the tape B
“BAG-3”
2 minutes
Fast forward the tape B
“BAG-4”
Shut off or 20 seconds
REV play the tape B
“BAG-5”
2 minutes
Rewind the tape B
“BAG-6”
Shut off
Note:
“
*
AG-
*
” is display of each step.
19
HCD-RG550/RG660
[GC TEST MODE]
• This mode is used to check the fluorescent indicator tube, LED
and key.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GAME EQ] and [DISC 2] simultaneously.
3. Fluorescent indicator tube and LEDs are all turned ON.
4. Press two keys of [GAME EQ] and [DISC 2] simultaneously, mode
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GAME EQ] and [DISC 2] simultaneously.
3. Fluorescent indicator tube and LEDs are all turned ON.
4. Press two keys of [GAME EQ] and [DISC 2] simultaneously, mode
is changed over.
5. In the key check mode, press each key, the defined key number
of every each key list is displayed on the fluorescent indicator
tube.
tube.
6. In the key count check mode, “KEYCNT 0” is displayed on the
fluorescent indicator tube. Each time a key is pressed,
“KEYCNT” value increases. However, once a key is pressed, it
is no longer taken into account.
“KEYCNT” value increases. However, once a key is pressed, it
is no longer taken into account.
7. In the headphone input check mode, connect the headphone,
the message “H_P ON” is displayed on the fluorescent
indicator tube, and disconnect the headphone, the message “H_P
OFF” is displayed on the fluorescent indicator tube.
indicator tube, and disconnect the headphone, the message “H_P
OFF” is displayed on the fluorescent indicator tube.
8. In the volume check mode, turn the [VOLUME] knob, the
display on the fluorescent indicator tube is changed over to
“VOLUME UP”, “VOLUME FLAT” or “VOLUME DOWN”
“VOLUME UP”, “VOLUME FLAT” or “VOLUME DOWN”
[MC TEST MODE]
• This mode is used to check operations of Amplifier.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GAME EQ] and [DISC 3] simultaneously.
3. When the MC test mode is activated, the message “TEST
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x , [GAME EQ] and [DISC 3] simultaneously.
3. When the MC test mode is activated, the message “TEST
MODE” is displayed on the fluorescent indicator tube
momentarily, then VACS level is displayed on the fluorescent
indicator tube.
momentarily, then VACS level is displayed on the fluorescent
indicator tube.
4. Press the [MUSIC EQ] key, the display on the fluorescent
indicator tube is changed over to “GEQ MAX”, press the
[EFFECT ON/OFF] key, the display on the fluorescent indicator
tube is changed over to “GEQ 16”, press the [MOVIE EQ] key,
the display on the fluorescent indicator tube is changed over to
“GEQ MIN”,
[EFFECT ON/OFF] key, the display on the fluorescent indicator
tube is changed over to “GEQ 16”, press the [MOVIE EQ] key,
the display on the fluorescent indicator tube is changed over to
“GEQ MIN”,
5. Turn the [VOLUME] knob, the display on the fluorescent
indicator tube is changed over to “VOLUME MAX”, “VOLUME
MID” or “VOLUME MIN”
MID” or “VOLUME MIN”
6. Press the [GROOVE] key, VACS ON/OFF is changed over.
7. When the [REC PAUSE/START] key is pressed with a tape set in
7. When the [REC PAUSE/START] key is pressed with a tape set in
the deck-B, the function is switched “MD” or “VIDEO” and
recording starts. When the m or M key is pressed during
recording, the tape is rewound back to the beginning of
recording, the function is switched to “TAPE B”, then playback
starts.
recording starts. When the m or M key is pressed during
recording, the tape is rewound back to the beginning of
recording, the function is switched to “TAPE B”, then playback
starts.
8. When the [CD SYNC] key is pressed with the test tape (AMS-
100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is
displayed on the fluorescent indicator tube.
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is
displayed on the fluorescent indicator tube.
9. To release from this mode, press the [POWER] key.
[MODEL, DESTINATION AND VERSION DISPLAY]
• This mode is used to check the model, destination and software
version.
Procedure:
1. Set to the standby state.
2. Press three keys of x , [GAME EQ] and [MOVIE EQ]
1. Set to the standby state.
2. Press three keys of x , [GAME EQ] and [MOVIE EQ]
simultaneously.
3. When the model, destination and version display mode is
activated, the model an destination is displayed on the
fluorescent indicator tube.
fluorescent indicator tube.
4. Press two keys of [GAME EQ] and [DISC 2] simultaneously, mode
is changed over to model and destination display mode and
version display mode.
version display mode.
5. To release from this mode, press the two keys of [GAME EQ]
and [MOVIE EQ] simultaneously.
[CD ERROR CODE DISPLAY]
• This mode can be used for error display of CD section.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three keys of x , [GAME EQ] and [DISC 1] simultaneously.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three keys of x , [GAME EQ] and [DISC 1] simultaneously.
Note:
Error code is not displayed on the fluorescent indicator tube.
[CD SERVICE MODE]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the optical pick-up.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three keys of x , [GAME EQ] and Z simultaneously.
4. When the CD service mode is activated, the message
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three keys of x , [GAME EQ] and Z simultaneously.
4. When the CD service mode is activated, the message
“TRAVERS ON” is displayed on the fluorescent indicator tube.
5. Press the M key, optical pick-up move to outside track and
the message “SLED OUT” is displayed on the fluorescent
indicator tube.
indicator tube.
6. Press the m key, optical pick-up move to inside track and
the message “SLED IN” is displayed on the fluorescent
indicator tube..
indicator tube..
7. Press the [MOVIE EQ] key, traverse ON/OFF is changed over.
[5 REPEAT LIMIT CANCEL]
• 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.
playback for limitless times.
Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three keys of x , [GAME EQ] and gG simultaneously.
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three keys of x , [GAME EQ] and gG simultaneously.
20
HCD-RG550/RG660
SECTION 4
ELECTRICAL ADJUSTMENTS
CD SECTION
Note:
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MW impedance.
4. Clean the object lens by an applicator with neutral detergent
3. Use an oscilloscope with more than 10MW impedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
following checks.
S-CURVE CHECK
Procedure :
1. Connect an oscilloscope to TP (FE) and TP (VC).
2. Turn the power on.
3. Load a disc (YEDS-18) and actuate the focus search. (In
1. Connect an oscilloscope to TP (FE) and TP (VC).
2. Turn the power on.
3. Load a disc (YEDS-18) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
search)
4. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And confirm peak to peak level
within 3 ± 0.5 Vp-p.
within 3 ± 0.5 Vp-p.
Note:
• Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF LEVEL CHECK
Procedure :
1. Connect an oscilloscope to TP (RF) and TP (VC).
2. Turn the power on.
3. Load a disc (YEDS-18) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF
1. Connect an oscilloscope to TP (RF) and TP (VC).
2. Turn the power on.
3. Load a disc (YEDS-18) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF
signal level is correct or not.
Note:
Clear RF signal waveform means that the shape “
◊ ” can be
clearly distinguished at the center of the waveform.
Connecting Location: BD board
BD board
Oscilloscope
TP(FE)
TP(VC)
TP(VC)
symmetry
S-curve waveform
within 3
±
0.5Vp-p
A
B
TP(RF)
BD board
oscilloscope
TP(VC)
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.3
±
0.3Vp-p
TP (VC)
TP (RF)
TP (FE)
IC721
– BD Board (Conductor side) –
TP (TE)
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