• HCD-GX40 is the tuner, deck, CD and
amplifier section in MHC-GX40.
CD
Section
Tape deckModel Name Using Similar MechanismHCD-GX10
SectionT ape Transport Mechanism T ypeCWL43FF48
US Model
Canadian Model
Model Name Using Similar MechanismNew
CD Mechanism TypeCDM58F-K6A
Optical Pick-up NameKSM-213D
AUDIO POWER SPECIFICATIONS:
(USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohms loads both channels driven, from
120 – 10,000 Hz; rates 60 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
Amplifier section
Front speaker
Continuous RMS power output (reference)
Total harmonic distortion less than 0.07%
Sub woofer
Continuous RMS power output (reference)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
60 + 60 watts (6 ohms at
1 kHz, 10% THD)
(6 ohms at 1 kHz, 30 W)
120 watts (12 ohms at
40 Hz, 10% THD)
(12 ohms at 40 Hz, 60 W)
SPECIFICATIONS
CD player section
SystemCompact disc and digital
LaserSemiconductor laser
Frequency response2 Hz – 20 kHz (±0.5 dB)
Wavelength780 – 790 nm
Signal-to-noise ratioMore than 90 dB
Dynamic rangeMore than 90 dB
Personal Audio Company
Published by Sony Engineering Corporation
HCD-GX40
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for A C leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1.A commercial leakage tester, such as the Simpson 229 or RCA
WT -540A. Follo w the manufacturers’ instructions to use these
instruments.
2.A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3.Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter . The “limit” indication
is 0.75 V, so analog meters must have an accurate low-v oltage
scale. The Simpson 250 and Sanwa SH-63Trd are e xamples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
The release method of a CD disc tray LOCK function
There is a disc lock function for the disc theft prevention for a
demonstration at a shop front in this machine.
Procedue:
1. Press the ?/1 button to turn the set on.
2. Press two buttons of x and OPEN/CLOSE simultaneously
for five seconds.
3. The message “LOCKED” is displayed and the tray is lock ed.
(Even if exiting from this mode, the tray is still locked.)
4. Press two buttons of x and OPEN/CLOSE simultaneously
for five seconds again.
5. The message “UNLOCKED” is displayed and the tray is
unlocked.
6. To exit from this mode, press the ?/1 button to turn the set
off.
To Exposed Metal
Parts on Set
AC
0.15 µF
Fig. A. Using an A C v oltmeter to check A C leakage.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
1.5 kΩ
Earth Ground
Voltmeter
(0.75 V)
ATTENTION AU COMPOSANT AYANT RAPPORT
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
À LA SÉCURITÉ!
2
HCD-GX40
Ver 1.2 2003.11
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
TABLE OF CONTENTS
1. GENERAL ·········································································· 4
GAME wf (22, 24)
GAME EQ ql (20, 24)
GAME MIXING 4 (22)
GROOVE 6 (20)
MOVIE EQ 5 (20)
MUSIC EQ 9 (20)
PHONES jack qf
REC PAUSE/START 8 (18)
TAPE A/B wg (16, 18)
TUNER/BAND wh (13 – 15, 18)
VIDEO jack wd (24)
VOLUME control qd
678
BUTTON DESCRIPTIONS
?/1 (power) 1
Z OPEN/CLOSE qs
Z (deck B) qg
M qk
. qk
> qk
X qk
N qk
x qk
m qk
Z (deck A) wa
Press . or > on the remote
repeatedly to set the hour.
4
Press ENTER on the remote.
The minute indication flashes.
5
Press . or > on the remote
repeatedly to set the minute.
6
Press ENTER on the remote.
The clock starts working.
To adjust the clock
1 Press CLOCK/TIMER SET on the remote.
2 Press . or > on the remote to select
“CLOCK SET”, then press ENTER on the
remote.
3 Do the same procedures as step 3 to 6
above.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
wa
w;
ql
qk
qj
qh
qg
5
6
7
8
9
0
qa
qs
qd
qf
5
HCD-GX40
)
Ver 1.2 2003.11
Note : Disassemble the unit in the order as shown below.
SECTION 2
DISASSEMBLY
SET
BACK PANEL SECTION
CD BOARD AND DRIVER BOARD
OPTICAL PICK-UP (KSM-213D)
MOTOR BOARD AND
CD DOORCD MECHANISM DECK (CDM58F-K6A)CASE (TOP)FRONT PANEL SECTION
SUB TRANS BOARD AND VIDEO OUT BOARD
MAIN BOARD
SPDL BOARD
ADDRESS SENSOR
BOARD
Note : Follow the disassembly procedure in the numerical order given.
AMPLIFIER BOARD AND
POWER BOARD
TABLE (NEW),CAM (CONTROL) AND
DC MOTOR (M721)
KEY BOARD BOARDREM BOARD AND PANEL BOARDTAPE MECHANISM DECK (CWL43FF48)
TRANS BOARD
2-1.Case (Top)
6
two screws (Case 3 TP2)
7
screw (Case 3 TP2)
case (Side-L)
9
screw
(+BVTT 3
×
8)
qf
case (Top)
8
(+BVTP 3
screw
q;
qs
× 8
qa
four screws (+BVTP 3
qs
)
qd
case (Side-R)
5
×
10)
3
screw
(+BVTP 3
1
two screws
(Case 3 TP2)
× 8
4
(+BVTT 3
2
screw (Case 3 TP2)
screw
×
8)
6
2-2.CD Door
)
CD mechanism deck (CDM58F-K6A)
1
Turn the pulley to the direction of arrow.
Front panel side
4
CD door
HCD-GX40
pulley
2-3.Front Panel Section
6
connector 2p (CN682)
2
Pull-out the disc tray.
4
screw (+BVTP 3
×
3
10)
3
screw (+BVTP 3
qs
front panel
×
10)
7
wire (flat type)
19p (CN733)
5
0
connector 3p (CN303)
2
screw (+BVTP 3
8
9
wire (flat type) 13p (CN207)
×
connector 3p (CN201
10)
qa
connector 7p (CN202)
1
three screws (+BVTT 3
×
6)
7
HCD-GX40
)
)
2-4.CD Mechanism Deck (CDM58F-K6A)
4
CD mechanism deck (CDM58F-K6A)
3
1
screw (+BVTP 3
2
connector 7p (CN734)
×
10
2-5.Tape Mechanism Deck (CWL43FF48)
2
three ground wires
3
tape mechanism deck
(CWL43FF48)
1
six
screws
(+BVTP 2.6
×
8
8
2-6.REM Board and PANEL Board
g
)
2
four
claws
two claws
6
REM
claw
board
REM
board
3
eight
(+BVTP 2.6
HCD-GX40
screws
× 8
)
1
volume knob
2-7.KEY BOARD Board
three claws
7
PANEL board
two claws
4
13p (CN662)
2
KEY BOARD board
5
Remove the solderin
(three portions)
connector
1 four
screws
×
(+BVTP 2.6
8
9
HCD-GX40
)
)
2-8.Back Panel Section
3
connector
3p (CN903)
6
7 back panel
screw
1 four
(+BVTP 3
2 two
screw
(+BVTT 3
×
×
10
6)
2-9.SUB TRANS Board and VIDEO OUT Board
6 cover (duct)
4 VIDEO OUT board
4
2p (CN301)
5
connector
2p (CN505)
connector
3
screw (+BVTP 3
5 two
×
10)
screws (+BVTP 3
7 two
screws (+BVTP 3
×
10)
×
10
10
1 two
screws
(+BVTP 3
×
10)
2 SUB TRANS board
8 DC fan (M961)
2-10. MAIN Board
d
2
connector 3p (CN509)
5
MAIN boar
1 two
screws
(+BVTT 3
×
HCD-GX40
6)
2-11. AMPLIFIER Board and POWER Board
7
screw (+BVTT 3
9
connector 7p (CN508)
2
three screws (+BVTT 3
×
×
6)
4
connector 13p (CN502)
Main board
3
connector 13p (CN503)
8
screw (+BVTT 3
6)
×
6)
1 two
screws (+BVTT 3
qd
heat sink
×
6)
5
connector 13p (CN915)
3
6 POWER
4 two
screws (+BVTP 3
qs
0 t
qa two
screws (+BVTP 3
board
AMPLIFIER
wo screws (+BVTP 3
×
board
×
6)
6)
×
6)
11
HCD-GX40
d
)
2-12. TRANS Board
1 two
screws (+BVTT 4× 6)
2 two
screws (+BVTT 4× 6)
3 TRANS boar
2-13. CD Board and DRIVER Board
3
four s
crews (+BTTP M2.6 )
5
CD board
4
2
wire (flat type)
16p (CN731)
1
connector 10p (CN735)
6
screw (+BTTP M2.6
8
DRIVER board
7
wire (flat type)
8p (CN702)
12
2-14. SPDL Board
)
HCD-GX40
Ver 1.2 2003.11
1 Remove solder (four places).
2 Remove solder (four places).
3 SPDL board
2-15. Optical Pick-up (KSM-213D)
7
4
two stoppers (BU)
2
two insulators
holder (BU) assy
0
optical pick-up
(KSM-213D)
9
1
screw (+PTPWH M2.6)
6
screw (DIA. 12)
8
two insulators
5
two
screws (+PTPWH M2.6
3
two screws (+BVTP 2.6
×
8)
13
HCD-GX40
2-16. MOTOR Board and ADDRESS SENSOR Board
2
screw (+PTPWH 2.6
7
MOTOR board
8
3
tray
screw (+BVTP 2.6
×
8)
×
8)
5
two screws (+BVTP 2.6
6
×
8)
Remove the two solderings of motor.
4
connector 4p (CN722)
9
ADDRESS SENSOR board
1
Pull out the disc tray.
2-17. Table (New), Cam (Control) and DC Motor (M721)
2
screw (STEP)
3
*Cautions of an assembly
DC
motor (TURN)
pulley (S)
4
gear (U)
cam (CONTROL)
5
pulley (S)
6
belt
7
DC
claw
motor (M721)
14
1
table (NEW)
claw
SECTION 3
TEST MODE
HCD-GX40
[Change-over of AM Tuner Step between 9 kHz and
10 kHz]
•A step of AM channels can be changed ov er 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 “AM”.
3. Press ?/1 button to turn the set OFF.
4. Press TUNER/BAND 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.
[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 , GROO VE , and ?/1 simultaneously.
2. The fluorescent indicator tube displays “COLD RESET” and
the set is reset.
[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 is displayed 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 three discs in tray. Select ALL DISCS, and REPEAT OFF.
2) Load the tapes recording use into both decks.
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) Operation during aging mode
• In the agining mode ,the program is excuted in the following
sequence.
(1) The disc tray opens and closes.
(2) The disc tray turns to select a disc 3.
(3) The pickup accesses to the first track, and plays 3 seconds.
(4) The pickup accesses to the last track, and plays 3 seconds.
(5) The disc tray opens and closes.
(6) The disc tray turns to select a disc 1.
(7) The same operation starts like step (3).
(8) After a disc 1 aging operation, a disc 2 is selected.
(9) When an aging operation of a disc 3 is completed, the display
“AGING
∗∗∗∗” value increases.
(10) If no error occurs, the aging operation continues repeatedly.
2) Error display
Disc error
DisplayError
E00D01022Focus error (No disc)
E00D02022Sub Q error (Focus is good)
E00D02023TOC reading error
E00D02014Access error (Unable within regular time)
Mechanism error
DisplayError
E00M__E_0Error during opening tray
E00M__C_2EX-CHANGE disc error
E00M__D_0Error during closing tray
• If error occurred, the display remains like “TAPE BAG-2”.
4.Exiting from the aging mode
• Be sure to perform Cold Reset to exit from the aging mode.
15
HCD-GX40
[GC Test Mode]
• All fluorecent segments and LEDs are tested.
•Keyboard check.
Procedure:
1. Press ?/1 button to turn the set ON.
2. To enter the test mode, press the three buttons x , GAME EQ
and DISC 2 simultaneously.
3. All segments and LEDs (without STANDBY LED) are turned
on.
4. Press GAME EQ and DISC 2 buttons simultaneously, and the
key check mode is activated.
5. The message “KEY 0 0 0 0” is displayed.
Each time a button is pressed, the key code number is displayed.
6. Press GAME EQ and DISC 2 buttons simultaneously, and the
key count mode is activated.
7. The message “KEYCNT 0 1” is displayed.
Each time a button is pressed, “KEYCNT 0 1” value increased.
However, once a button is pressed, it is no longer taken into
account.
8. Press GAME EQ and DISC 2 buttons simultaneously, and the
head phone detect mode is activated.
9. The message “H_P OFF” is displayed when a headphone jack
is not inserted.
“H_P ON ” is displayed when a headphone jack is inserted.
10. Press GAME EQ and DISC 2 buttons simultaneously, and the
volume control detect mode is activated.
11. The message “VOLUME FLAT” is displayed.
“VOLUME UP” is displayed if rotating VOLUME knob
clockwise, or “VOLUME DOWN” is displayed if rotating
counterclockwise.
12. To exit from the GC test mode after the volume control detect
mode, press GAME EQ and DISC 2 buttons simultaneously .
[Version and Destination Display Mode]
•The version or destination is displayed.
Procedure:
1. Press ?/1 button to turn the set ON.
2. To enter the test mode, press the three buttons x , GAME EQ
and MOVIE EQ simultaneously.
3. The destination is displayed.
4. Press STOP and GROOVE buttons simultaneously.
5. The version is displayed.
6. To exit from this mode, press ?/1 button to turn the set OFF.
[MC Test Mode]
•This mode is used to test the function of the equalizer.
Procedure:
1. Press ?/1 button to turn the set ON.
2. To enter the test mode, press the three buttons x , GAME EQ
and DISC 3 simultaneously.
3. Press the MOVIE EQ button.
The function of the equalizer is set to “MIN”.
4. Press the MUSIC EQ button.
The function of the equalizer is set to “MAX”.
5. Press the P.FILE button.
The function of the equalizer is set to “FLAT”.
6. To exit from this mode, press ?/1 button to turn the set OFF.
[CD Ship Mode (No Memory Clear) ]
•This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. Press ?/1 button to turn the set OFF.
4. Press CD button and ?/1 button simultaneously.
5. The "STANDBY" display blinks instantaneously, and the CD
ship mode is set.
[Disc T ray Lock]
Procedure:
1.Press the ?/1 button to turn the set on.
2.Press two buttons of x and OPEN/CLOSE simultaneously
for five seconds.
3.The message “LOCKED” is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked.)
4.Press two buttons of x and OPEN/CLOSE simultaneously
for five seconds again.
5.The message “UNLOCKED” is displayed and the tray is
unlocked.
6.To exit from this mode, press the ?/1 button to turn the set
off.
[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. To enter the test mode, 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
to outside track, or press . button to inside track.
6. To exit from this mode, perform as follows:
> button to move the pickup
+
–
1) Move the pickup to the most inside track.
2) Press ?/1 button to turn the set OFF.
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.
16
SECTION 4
l
r
ELECTRICAL ADJUSTMENTS
HCD-GX40
TUNER SECTION
AM IF Adjustment
AM RF Signal generator
set
30% amplitude
modulation by
400Hz signal
output level : as low as possible
16
set
headphones jack (JK691)
Procedure:
1.Set the frequency of the AM RF signal generator to 1000 kHz
(at 10 kHz step) or 999 kHz (at 9 kHz step).
2.Tune the set to AM 1000 kHz (at 10 kHz step) or 999 kHz (at 9
kHz step).
3.Adjust IFT101 so that the reading on level meter becomes in
maximum.