Text preview for : sony_hcd-gpx5g_gpx7g_gpx8g_ver1.1.pdf part of Sony HCD-GPX5G/GPX7G/GPX8G Manual de Servicio Tecnico HCD-GPX5G/GPX7G/GPX8G
Back to : sony_hcd-gpx5g_gpx7g_gpx8 | Home
HCD-GPX5G/GPX7G/GPX8G
SERVICE MANUAL E Model
Ver. 1.1 2012.07
· HCD-GPX5G is the amplifier, USB, CD player and tuner
section in MHC-GPX5.
· HCD-GPX7G is the amplifier, USB, CD player and tuner
section in MHC-GPX7.
· HCD-GPX8G is the amplifier, USB, CD player and tuner
section in MHC-GPX8. Photo: HCD-GPX8G (E2 Model)
"WALKMAN" and "WALKMAN" logo are registered
trademarks of Sony Corporation. Model Name Using Similar Mechanism NEW
MPEG Layer-3 audio coding technology and patents licensed CD Section CD Mechanism Type CDM74I-DVBU201//M
from Fraunhofer IIS and Thomson.
Windows Media is either a registered trademark or trademark
Optical Pick-up Name CMS-ST6RFS3
of Microsoft Corporation in the United States and/or other
countries.
This product contains technology subject to certain
intellectual property rights of Microsoft.
Use or distribution of this technology outside of this product
is prohibited without the appropriate license(s) from
Microsoft.
SPECIFICATIONS
Amplifier section MHC-GPX5 Supported USB device Other models:
The following are measured at Mexican model: Front speaker Mass Storage Class 530 kHz 1,610 kHz (10 kHz step)
AC 120 V 240 V, 60 Hz Power Output (rated): Maximum current 531 kHz 1,602 kHz (9 kHz step)
Other models: 240 W + 240 W (at 5 ohms, 1 kHz, 500 mA General
AC 120 V 240 V, 50/60 Hz 1% THD) Disc player section Power requirements
MHC-GPX8 RMS output power (reference): System Mexican model: AC 120 V 240 V, 60 Hz
Front/Satellite speaker 370 W + 370 W (per channel at 5 ohms, Compact disc and digital audio system Other models: AC 120 V 240 V, 50/60 Hz
Power Output (rated): 1 kHz) Laser Diode Properties Power consumption
300 W + 300 W (at 4 ohms, 1 kHz, Subwoofer Emission Duration: Continuous MHC-GPX8: 250 W
1% THD) RMS output power (reference): Laser Output*: Less than 44.6 W MHC-GPX7: 230 W
Front speaker 360 W (5 ohms, 100 Hz) * This output is the value measurement MHC-GPX5: 200 W
RMS output power (reference): Inputs at a distance of 200 mm from the Dimensions (w/h/d) (excl. speakers)
360 W + 360 W (per channel at 6 ohms, TV (AUDIO IN) L/R objective lens surface on the Optical (Approx.)
1 kHz) 280 mm × 355 mm × 440 mm
Voltage 1.2 V, impedance 47 kilohms Pick-up Block with 7 mm aperture.
Satellite speaker Mass (excl. speakers) (Approx.)
DVD/SAT (AUDIO IN) L/R Frequency response
RMS output power (reference): HCD-GPX8G/HCD-GPX7G/
Voltage 1.2 V, impedance 47 kilohms 20 Hz 20 kHz
180 W+ 180 W (per channel at 12 ohms, HCD-GPX5G: 7.0 kg
PC/GAME (AUDIO IN) L/R Signal-to-noise ratio
1 kHz) Supplied accessories
Voltage 1.2 V, impedance 47 kilohms More than 90 dB
Subwoofer Remote control (1)
MIC (MHC-GPX8/MHC-GPX7 only) Dynamic range
RMS output power (reference): R6 (Size AA) batteries (2)
Sensitivity 1 mV, impedance More than 88 dB
260 W + 260 W (per channel at 8 ohms, FM lead/AM loop antenna (1)
100 Hz) 10 kilohms Tuner section Spacer A (MHC-GPX8 only) (2)
A (USB), B (USB) port: Type A FM stereo, FM/AM superheterodyne tuner Spacer B (MHC-GPX8 only) (2)
MHC-GPX7 Antenna:
USB section Speaker pads (MHC-GPX7 only) (8)
HIGH speakers FM lead antenna
Power Output (rated): Supported bit rate
AM loop antenna Design and specifications are subject to change
300 W + 300 W (at 4 ohms, 1 kHz, MP3 (MPEG 1 Audio Layer-3):
FM tuner section without notice.
1% THD) 32 kbps 320 kbps, VBR
Tuning range
RMS output power (reference): WMA: 48 kbps 192 kbps
87.5 MHz 108.0 MHz (50 kHz step)
495 W + 495 W (per channel at 4 ohms, AAC: 48 kbps 320 kbps
AM tuner section
1 kHz) Sampling frequencies
Tuning range
LOW speakers MP3 (MPEG 1 Audio Layer-3):
Pan American models:
RMS output power (reference): 32 kHz/44.1 kHz/48 kHz
530 kHz 1,710 kHz (10 kHz step)
180 W + 180 W (10 ohms, 100 Hz) WMA: 44.1 kHz
531 kHz 1,710 kHz (9 kHz step)
AAC: 44.1 kHz
COMPACT DISC RECEIVER
9-890-600-02
2012G08-1 Sony Corporation
© 2012.07 Published by Sony EMCS (Malaysia) PG Tec
HCD-GPX5G/GPX7G/GPX8G
NOTES ON CHIP COMPONENT REPLACEMENT
· Never reuse a disconnected chip component. To Exposed Metal
Parts on Set
· Notice that the minus side of a tantalum capacitor may be
damaged by heat.
FLEXIBLE CIRCUIT BOARD REPAIRING
· Keep the temperature of soldering iron around 270 °C during
repairing.
· Do not touch the soldering iron on the same conductor of the AC
circuit board (within 3 times). 0.15 F 1.5 k voltmeter
(0.75 V)
· Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer: Earth Ground
Check the antenna terminals, metal trim, "metallized" knobs, Fig. A. Using an AC voltmeter to check AC leakage.
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below. CAUTION
Use of controls or adjustments or performance of procedures
LEAKAGE TEST
other than those specified herein may result in hazardous
The AC leakage from any exposed metal part to earth ground and radiation exposure.
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
This appliance is classified as a CLASS 1
Leakage current can be measured by any one of three methods. LASER product. This marking is located on
1. A commercial leakage tester, such as the Simpson 229 or RCA the rear exterior.
WT-540A. Follow 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-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
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.
2
HCD-GPX5G/GPX7G/GPX8G
TABLE OF CONTENTS
1. SERVICING NOTES................................................ 4 5-22. Printed Wiring Board - TUNER1AM3R Board ............. 45
5-23. Schematic Diagram - TUNER1AM3R Board - .............. 45
2. DISASSEMBLY 5-24. Printed Wiring Board - DMB22 Board - ........................ 46
2-1. Disassembly Flow ........................................................... 8 5-25. Schematic Diagram - DMB22 Board (1/3) - .................. 47
2-2. Case ................................................................................. 9 5-26. Schematic Diagram - DMB22 Board (2/3) - .................. 48
2-3. Loading Panel ................................................................. 9 5-27. Schematic Diagram - DMB22 Board (3/3) - .................. 49
2-4. Front Panel Section ......................................................... 10
2-5. CD Mechanism Section (CDM741-DVBU201//M) ....... 10 6. EXPLODED VIEWS
2-6. TUNER1AM3R Board ................................................... 11 6-1. Case Section ................................................................... 61
2-7. MAIN Board ................................................................... 11 6-2. Front Panel Section ........................................................ 62
2-8. Back Panel Section ......................................................... 12 6-3. Back Panel Section ......................................................... 63
2-9. 4CH DAMP board .......................................................... 13 6-4. Chassis Section ............................................................... 64
2-10. Chassis Section ............................................................... 14 6-5. CD Mechanism Section (1)
2-11. Cover Dust CDM ........................................................... 15 (CDM74I-DVBU201//M) ............................................... 65
2-12. Optical Pick Up ............................................................... 15 6-6. CD Mechanism Section (2)............................................. 66
2-13. DMB22 Board................................................................. 16
2-14. DRIVER Board, SWITCH Board ................................... 16 7. ELECTRICAL PARTS LIST ............................... 67
2-15. SENSOR Board .............................................................. 17
2-16. MOTOR (TB) Board....................................................... 17
2-17. MOTOR (LD) Board ...................................................... 18
3. TEST MODE ............................................................. 19
4. ELECTRICAL CHECK .......................................... 22
5. DIAGRAMS
5-1. Block Diagram - CD/USB Section - ............................... 23
5-2. Block Diagram - MAIN Section -................................... 24
5-3. Block Diagram - AMP Section - ..................................... 25
5-4. Block Diagram - PANEL/POWER SUPPLY Section - .. 26
5-5. Printed Wiring Board -
4CH DAMP Board (Component side) ............................ 28
5-6. Printed Wiring Board -
4CH DAMP Board (Conductor side) .............................. 29
5-7. Schematic Diagram - 4CH DAMP Board (1/3) -............ 30
5-8. Schematic Diagram - 4CH DAMP Board (2/3) -............ 31
5-9. Schematic Diagram - 4CH DAMP Board (3/3) -............ 32
5-10. Printed Wiring Board - DISPLAY Board - ..................... 33
5-11. Schematic Diagram - DISPLAY Board - ........................ 34
5-12. Printed Wiring Board -
MAIN Board (Component side) ..................................... 35
5-13. Printed Wiring Board -
MAIN Board (Conductor side) ....................................... 36
5-14. Schematic Diagram - MAIN Board (1/4) - ..................... 37
5-15. Schematic Diagram - MAIN Board (2/4) - ..................... 38
5-16. Schematic Diagram - MAIN Board (3/4) - ..................... 39
5-17. Schematic Diagram - MAIN Board (4/4) - ..................... 40
5-18. Printed Wiring Board -
USB, VOLUME and MIC Board - ................................. 41
5-19. Schematic Diagram -
USB, VOLUME and MIC Board - ................................. 42
5-20. Printed Wiring Board - DRIVER, SENSOR, SWITCH,
MOTOR (LD) and MOTOR (TB) Board ....................... 43
5-21. Schematic Diagram - DRIVER, SENSOR, SWITCH,
MOTOR (LD) and MOTOR (TB) Board - ..................... 44
3
HCD-GPX5G/GPX7G/GPX8G
Ver. 1.1 SECTION 1
SERVICING NOTES
MODEL IDENTIFICATION
NOTES ON HANDLING THE OPTICAL PICK-UP
Back Panel
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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.
PART No.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size) Model Part No.
HCD-GPX8G: E2, E51, E4 4-411-595-0[]
: LEAD FREE MARK
Unleaded solder has the following characteristics. HCD-GPX7G: E2, E51 4-411-595-1[]
· Unleaded solder melts at a temperature about 40 °C higher HCD-GPX5G: E2, E51 4-411-595-2[]
than ordinary solder. HCD-GPX8G: MX 4-411-595-3[]
Ordinary soldering irons can be used but the iron tip has to be
HCD-GPX7G: MX 4-411-595-4[]
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to HCD-GPX5G: MX 4-411-595-5[]
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
· Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
· Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
NOTE OF REPLACING THE IC502 ON THE DMB22
BOARD
IC502 on the DMB22 board cannot exchange with single.
When these parts on the DMB22 board are damaged,
exchange the entire mounted board.
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure:
1. Press [I/1 STANDBY] button to turn the power on.
2. Press the [CD/DISC SKIP] button to select CD function.
3. While pressing the [x] button, press the [ENTER] button for
more 5 seconds).
4. The message "UNLOCKED" is displayed and the disc tray is
unlocked.
Note: When "LOCKED" is displayed, the slot lock is not released by
turning power on/off with the [I/1 STANDBY] button.
Note : Refer to SUPPLEMENT-1 for adding SERVICING
NOTES (TROUBLESHOOTING)
4
HCD-GPX5G/GPX7G/GPX8G
HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF
CD mechanism deck (CDM74I)
1 Turn the gear to the direction of the arrow.
(The location of this gear pulley is at the
bottom side of the CDM)
chassis side
gear
By using (-) screw driver
5
HCD-GPX5G/GPX7G/GPX8G
CAPACITOR DISCHARGE FOR ELECTRIC SHOCK PREVENTION
in checking the DAMP 4CH board, make a capacitor
for electrical shock prevention.
C1431
4CH DAMP board
board
6
HCD-GPX5G/GPX7G/GPX8G
PRECAUTION WHEN INSTALLING A NEW OP UNIT/
PRECAUTION BEFORE UNSOLDERING THE STATIC
ELECTRICITY PREVENTION SOLDER BRIDGE
When installing a new OP unit, be sure to connect the flexible
printed circuit board first of all before removing the static electric-
ity prevention solder bridge by unsoldering.
Remove the static electricity prevention solder bridge by unsolder-
ing after the flexible printed circuit board has already been con-
nected.
(Do not remove nor unsolder the solder bridge as long as the OP
unit is kept standalone.)
7
HCD-GPX5G/GPX7G/GPX8G
SECTION 2
DISASSEMBLY
· This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
SET
2-2. CASE
(Page 9)
2-3. LOADING PANEL 2-4. FRONT PANEL SECTION 2-5. CD MECHANISM SECTION
(Page 9) (Page 10) (CDM74I-DVBU201/M)
(Page 10)
2-6. TUNER1AM3R BOARD
(Page 11)
2-7. MAIN BOARD
(Page 11)
2-8. BACK PANEL SECTION
(Page 12)
2-9. 4CH DAMP BOARD
(Page 13)
2-10. CHASSIS SECTION
(Page 14)
2-11. COVER DUST CDM
(Page 15)
2-12. OPTICAL PICK UP
(Page 15)
2-13. DMB22 BOARD
(Page 16)
2-14. DRIVER BOARD, SWITCH BOARD
(Page 16)
2-15. SENSOR BOARD
(Page 17)
2-16. MOTOR (TB) BOARD
(Page 17)
2-17. MOTOR (LD) BOARD
(Page 18)
8
HCD-GPX5G/GPX7G/GPX8G
Note: Follow the disassembly procedure in the numerical order given.
2-2. CASE
5 two screws
(+BVTP 3x14)
6
2 two screws
4 panel, side (L) (+BVTP 3x14)
3
4 panel, side (R)
1 two screws 2 two screws
(+BVTP 3x14) 3 (+BVTP 3x14)
1 two screws
(+BVTP 3x14)
2-3. LOADING PANEL
3 panel, loading
CD mechanism deck (CDM74I)
1 Turn the gear to the direction of the arrow.
(The location of this gear pulley is at the
bottom side of the CDM)
chassis side
gear
By using (-) screw driver
2 Pull-out the disc tray
9
HCD-GPX5G/GPX7G/GPX8G
2-4. FRONT PANEL SECTION
2 one screw
(+BVTP 3x8)
2 one screw
(+BVTP 3x8)
3 wire (flat type) (17core) CN601
4 CN707 (4P)
5 CN705 (10P)
1 one screws
1 four screws
(+BVTP 3x8)
(+BVTP 3x8)
For GPX7G/
GPX8G
2-5. CD MECHANISM SECTION (CDM74I-DVBU201//M)
Peel off the cushion
and tape on the wire
(flat type) from TUNER.
CD mechanism section
( CDM74I-DVBU201//M) cushion tape
4 one screw
(BVTP 3x8)
2 wire (flat type) (19core) CN702
1 wire (flat type) (13core) CN700
3 wire (flat type) (15core) CN703
10
HCD-GPX5G/GPX7G/GPX8G
2-6. TUNER1AM3R BOARD
3 shield plate top
5 TUNER1AM3R board
4 shield plate bottom
1 wire (flat type) (9 core)
(CN513)
2 two screws
(BVTP 3x8)
2-7. MAIN BOARD
1 two screws
(+BVTP 3x8)
3 MAIN board
2 two screws
(+BVTP 3x8)
11
HCD-GPX5G/GPX7G/GPX8G
2-8. BACK PANEL SECTION
3 two screws
4 cover, fan (BVTP 3x8)
1 CN1405 (3P)
5 fan, DC
2 two screws
(BVTP 3x8)
9 back panel section
for GPX8G
7 one screw
(+BVTP 3x8)
6 two screws
(BVTP 3x8)
8 one screws
(BVTP 3x8)
12
HCD-GPX5G/GPX7G/GPX8G
2-9. 4CH DAMP BOARD
1 three screws
(PTPWH 2.6x12)
3 two screws 3 two screws
2 sheet thermal (BVTT 3x8) (BVTT 3x8)
4 CN2 (9P)
6 4CH DAMP board
5 CN3 (5P)
13
HCD-GPX5G/GPX7G/GPX8G
2-10. CHASSIS SECTION
2 bracket, SMPS (shield)
1 two screws
(+BVTP 3x8)
1 two screws
5 nine screws (+BVTP 3x8)
(+PWH 3x8)
6 REGULATOR,
SWITCHING
4
7 chassis
E 3 CN1 (2P)
14
HCD-GPX5G/GPX7G/GPX8G
2-11. COVER DUST CDM
3 four screws
(+BVTP 3x10)
4 bracket, holder (DMB)
5 go through the
hole of cover dust
1 two screws
(+BVTP 3x10)
1 two screws
(+BVTP 3x10)
2 cover dust (CDM)
6 CDM74I
2-12. OPTICAL PICK UP
1 floating screw
(+PTPWH M2.6)
2 CDM74I assy
4 insulator
3 insulator screw
4 insulator 4 insulator
Solder the short-land 3 insulator screw
3 insulator screw
(Location of this point is at the bottom
side of optical device) 5 solder the short land
6 device, optical
(CMS-ST6RFS3)
4 insulator
3 insulator screw
15
HCD-GPX5G/GPX7G/GPX8G
2-13. DMB22 BOARD
1 four screws 2 clamp
(+BVTP 3x10)
4 wire (flat type)
(21core) (CN501)
5 DMB22 board
3 CN801 (6P)
6 bracket, holder (DMB)
7 CDM74I-DVBU201//M
2-14. DRIVER BOARD, SWITCH BOARD
1 two screws
(+BTTP (M2.6))
2 CN703 (4P)
5 DRIVER board
6 one screw
(+BTTP (M2.6))
7 SWITCH board
3 CN704 (2P)
4 wire (flat type) (5 core)
(CN702)
16
HCD-GPX5G/GPX7G/GPX8G
2-15. SENSOR BOARD
1 floating screw
(+PTPWH M2.6)
2 tray 8 one screw
(+BTTP (M2.6))
3 belt (table)
0 SENSOR board
4 floating screw
(+PTPWH M2.6)
5 pulley (table)
6 floating screw 9 CN731
(3P)
(+PTPWH M2.6)
7 gear (geneva)
2-16. MOTOR (TB) BOARD
1 gear (stopper)
table
2
1 gear (stopper)
5 motor assy, table (M741)
3 wire (flat type) (5 core)
(CN742)
7 MOTOR (TB) board
6 remove the two solderings of motor
4 two screws
(+BTTP (M2.6))
17
HCD-GPX5G/GPX7G/GPX8G
2-17. MOTOR (LD) BOARD
3 two screws
(+BTTP (M2.6))
2 remove the two solderings of motor
5 MOTOR (LD) board
4 motor assy, loading (M751)
1 belt (loading)
18
HCD-GPX5G/GPX7G/GPX8G
SECTION 3
TEST MODE
[PANEL TEST MODE] 4. When the [MASTER VOLUME] knob is turned clockwise
· This mode is used to check the fluorescent indicator tube, even slightly, the sound volume increases to its maximum
LEDs, keys, [MASTER VOLUME] jog, model, destina- and a message "VOLUME MAX" appears on the fluores-
tion and software version. cent indicator tube.
5. When the [MASTER VOLUME] knob is turned counter-
· Procedure: clockwise even slightly, the sound volume decreases to its
1. Press [CD/DISC SKIP] button and [TUNER/BAND] minimum and a message "VOLUME MIN" appears on the
button simultaneously and hold 3 seconds. fluorescent indicator tube.
2. All LEDs and segments in fluorescent indicator tube are
lighted up. · To release from Common Test mode
3. When you want to enter to the software version display 1. To release from this mode, press [I/1 STANDBY] button.
mode, press [ + / ] button. The model information 2. The cold reset is enforced at the same time.
appears on the fluorescent indicator tube.
· "GPX 3S" is shown for MHC-GPX5. [USER RESET]
· "GPX 4" is shown for MHC-GPX7. · The user reset clears all data including preset data stored
· "GPX 7S" is shown for MHC-GPX8. in the data flash to initial conditions exclude history mode
Press [ + / ] button again to view the destination data
information.
· Procedure:
4. During the destination information display, press [ +
1. Press [I/1 STANDBY] button to turn on the system.
/ ] button. Each time [ + / ] button is pressed, the
2. Press [x] button and [I/1 STANDBY] button simultane
fluorescent indicator tube shows the version of each category
ously for 3 seconds.
software in the following sequence: SC, MTK (DMB Board
3."RESET" appears on the fluorescent indicator tube.
firmware version), UI, PF, SYS, CD, CDMA, CDMB,
After that, the fluorescent indicator tube becomes blank
ST, TA, TAS, TM and return back to model information
for a while, and the system is reset.
display.
5. When [OPTION] button is pressed while the version
[COLD RESET]
numbers are being displayed except model and destination,
· The cold reset clears all data including preset data stored in
the date of the software creation appears. When [OPTION]
the data flash to initial conditions. Execute this mode when
button is pressed again, the display returns to the software
returning the set to the customer.
version display.
6. Press [ + / ] button, the key check mode is activated. · Procedure:
7. In the key check mode, the fluorescent indicator tube 1. Press [I/1 STANDBY] button to turn on the system.
displays "K 0 V0". 2. Press [ENTER] button and [GAME] button
Each time a button is pressed, "K" value increases. simultaneously for 3 seconds.
However, once a button has been pressed, it is no longer 3. "COLD RESET" appears on the fluorescent
taken into account. indicator tube. After that, the fluorescent indicator
"V" value increases in the manner of 0,1, 2, 3 ... if [MAS- tube becomes blank for a while, and the system is
TER VOLUME] knob is turned clockwise, or it decreases reset.
in the manner of 0, 9, 8,7 ... if [MASTER VOLUME] knob
is turned counterclockwise. [TUNER STEP CHANGE]
8. When [ENTER] button is pressed after all LEDs and · The step interval of AM channels can be toggled between
segments in fluorescent indicator tube light up, alternate 9 kHz and 10 kHz. This mode is not available for Saudi
segments in fluorescent indicator tube and LEDs would Arabian, European and Russian models.
light up. If you press [ENTER] button again, another half · Procedure:
of alternate segments in fluorescent indicator tube and 1. Press [I/1 STANDBY] button to turn on the system.
LEDs would light up. Pressing [ENTER] button again 2. Press [TUNER/BAND] button repeatedly to select
would cause all segments in fluorescent indicator tube and the "AM".
LEDs light up. 3. Press [I/1 STANDBY] button to turn off the system.
9. To release from this mode, press three buttons in the same 4. Press [LED EFFECT] button and [I/1 STANDBY]
manner as step 1, or disconnect the power cord. button simultaneously. The system turns on
[COMMON TEST MODE] automatically. The message "AM 9K STEP"
· This mode is used to check operations of the Amplifier or "AM 10K STEP" appears on the fluorescent
section. indicator tube and thus the channel step is changed.
· Procedure: [CD SHIP MODE (WITH MEMORY CLEAR)]
· To enter Common Test Mode · This mode moves the optical pick-up to the position
1. Press [USB/USB SELECT] button and [BASS BAZUCA] durable to vibration and clears all data including preset
button simultaneously and hold for 3 seconds. data stored in the EEPROM to initial conditions during the
2. The function is changed to TV and the volume is changed next AC-In. Use this mode when returning the set to the
to VOLUME MIN. customer after repair.
· Check of Amplifier · Procedure:
1. Press [MUSIC] button repeatedly until a message "GEQ 1. Press [I/1 STANDBY] button to turn on the system.
MAX" appears on the fluorescent indicator tube. GEQ in- 2. Select CD function.
creases to its maximum. 3. Press [ENTER] button and [MUSIC] button
2. Press [MUSIC] button repeatedly until a message "GEQ simultaneously for 3 seconds. The system turns off
MIN" appears on the fluorescent indicator tube. GEQ automatically.
decreases to its minimum. 4. A message
3. Press [MUSIC] button repeatedly until a message "GEQ "MECHA LOCK" is displayed on the fluorescent
FLAT" appears on the fluorescent indicator tube. GEQ is
indicator tube and the CD ship mode is set.
set to flat.
19
HCD-GPX5G/GPX7G/GPX8G
[CD SHIP MODE (WITHOUT MEMORY CLEAR)] 7. Press [ENTER] to Aging Display
· This mode moves the optical pick-up to the position du-
rable to vibration. Use this mode when returning the set to · To release from Meter Aging Mode.
the customer after repair. To release from this mode, press [I/1 STANDBY] button or
perform COLD RESET operation.
· Procedure:
1. Press [I/1 STANDBY] button to turn on the system. [HISTORY MODE]
2. Select CD function. · This mode is used to check important data stored in the
3. Press [BASS BAZUCA] button and [I/1 STANDBY] system when PROTECTOR happen.
button simultaneously. The system turns off
automatically. · Procedure:
4. A message 1. During demo mode, press [u] button and [BASS
"MECHA LOCK" is displayed on the fluorescent BAZUCA] for 5 seconds to mode in to history
indicator tube and the CD ship mode is set. mode.
2. Press the [TUNING +] or [TUNING -] button to
check history data stored
[CD TRAY LOCK MODE]
· This mode let you lock the disc tray. When this mode is ac- Item Display
tivated, the disc tray will not open when [Z OPEN/CLOSE] Protector Count P R O C O U N T
button or [EX-CHANGE] button is pressed. The message
"LOCKED" will be displayed on the fluorescent indicator Protector Type P R O T Y P E
tube. This mode only applied when there is disc(s) on the Single Power On Time T 1 H M
tray. Total Power On Time T 2 H M
· Procedure: Input Function F U N C
1. Press [I/1 STANDBY] button to turn on the system.
Volume V O L
2. Select CD function.
3. Press [x] button and [ENTER] button simultane- Actual Attenuation A T T
ously and hold down until "LOCKED" or "UN- Low EQ Level E Q L O W
LOCKED" displayed on the fluorescent indicator
tube (around 5 seconds). Mid EQ Level E Q M I D
High EQ Level E Q H I G H
[FACTORY PRESET] VACS Level V A C S
· This mode is use to load all the factory use preset frequen-
cies into FM 1-FM 20 and AM 1-AM 10. Originally, fre- AP VACS Level A P V A C S
quency of FM 1-FM 20 and AM 1-AM10 are set to the Subwoofer Setting S W
minimum frequency. Surround Setting S U R R
· Procedure: DJ Effect Setting D J
1. Press [I/1 STANDBY] button to turn on the system.
Bass Bazuca Setting B A Z U C A
2. Press [CD/DISC SKIP] button and [AUDIO IN]
button simultaneously and hold for 3 seconds, · To release from History Mode.
message "FACTORY" appears on the fluorescent To release from this mode, press [I/1 STANDBY] button.
indicator tube. The function is changed to TUNER
automatically. [PROTECT KIND CHECK TEST MODE]
· This mode is used to check types of protect occurred during
[CDM AGING MODE] protector on.
· This mode is used to display the total count of meter
pointer touch initial switch and max switch. · Procedure:
3. During protection on, fluorescent indicator tube
· Procedure: shows blinking message "PROTECT EXX".
1. Press [I/1 STANDBY] button to turn on the system. "EXX" represent the error code.
2. Select CD function and All DISC play mode. 4. Press [u] button & [x] button simultaneously.
3. Put discs on all trays and close the tray. 5. Fluorescent indicator tube display will toggle
4. Press [ + / ] button and [x] button simultane- between "PROTECT" message & protector kind
ously for 3 seconds. message display.
5. The fluorescent indicator tube displays Aging Bellow table explains on protector kind.
Display "AG xxxx/yyyy".
"xxxx" represents the error counter Error Code Protector Message Description
(Maximum Value of "xxxx" = 9999) The over current condition to MOS-
"yyyyy" represents the cycle counter E01 "AMP OCP" FET occurs by defect of MOSFET or
(Maximum Value of "yyyy" = 9999) defect of PS output line.
6. Press [<<] or [>>] to search for Aging History E02 "MTK POWER" No power supply to DMB mount
Error Display. E03 "POWER SUPPLY" Defect of power supply circuit to AMP
The fluorescent indicator tube displays
E04 "AMPLIFIER" Defect of AMP circuit
"Mx E1E2E3E4".
Defect of DC FAN and DC FAN
x: error history number E06 "FAN BLOCK"
driver circuit
E1: Loading sequence JCP high
E2: Loading sequence JCP low · To release from this mode.
E3: Loading operation JCP Press [u] button & [x] button simultaneously again or
E4: Cam position operation JCP unplug & re-plug in the power cord.
20
HCD-GPX5G/GPX7G/GPX8G
1. Defect of AMP circuit
1-1. If PROTECT mode is "AMPLIFIER",
The following defect might be possible.
Defects Possible cause
Unusual heat up of MOSFET by im-
OTP (Over Tempera-
proper assembly of heatsink, destruction
ture Protection)
of MOSFET etc..
DC appears in SP terminal by defect of
DC Detection AMP IC and MOSFET or output is short-
circuit.
Unusual output of
The power mount has unusual output.
Power mount
1-2. If speaker does not have output even if the set status is not
in PROTECT mode
The following defect might be possible.
Defects Possible cause
Under Voltage IC1402 output is below 12V.
RESET defect Reset signal status from micom is not `H'.
2. Defect of power supply circuit to AMP
2-1. If the PROTECT mode is "POWER SUPPLY",
There is possibility of unusual power supply of any of the
AMP IC or Pre-amplifier.
· To release from this mode.
Press [u] button and [x] button simultaneously
again or unplug and re-plug in the power cord.
21
HCD-GPX5G/GPX7G/GPX8G
SECTION 4
ELECTRICAL CHECK
CD SECTION TUNER SECTION 0 dB = 1 V
Note: FM AUTO STOP CHECK
1. CD Block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (Part No. 3-702-101-01) unless otherwise indicat- signal
ed. generator
3. Use an oscilloscope with more than 10 M impedance.
4. Clean the object lens by an applicator with neutral detergent when the set
signal level is low than specifi ed value with the following checks.
5. Check the focus bias check when optical pick-up block is replaced. +
75
FOCUS BIAS CHECK
oscilloscope
(DC range)
DMB22 board
CN507 pin 6 (RFMON) + Procedure:
CN507 pin 3 (GND)
1. Turn the power on.
2. Input the following signal from Signal Generator to FM an-
Procedure : tenna input directly.
1. Connect the oscilloscope to CN507 pin 6 (RFMON) and
CN507 pin 3 (GND) on the DMB22 board. Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
2. Press the [?/1 STANDBY] button to turn the power on, and Deviation : 75 kHz
press the [CD/DISC SKIP] button to select CD function. Modulation : 1 kHz
3. Set disc (YEDS-18) and press the [u] button to playback. ANT input : 35 dBu (EMF)
4. Confi rm that oscilloscope waveform is as shown in the fi gure
below (eye pattern). Note: Please use 75 ohm "coaxial cable" to connect SG and the
A good eye pattern means that the diamond shape () in the set. You cannot use video cable for checking.
center of the waveform can be clearly distinguished. Please use SG whose output impedance is 75 ohm.
VOLT/DIV: 200 mV
TIME/DIV: 500 ns 3. Set to FM tuner function and scan the input FM signal with
automatic scanning.
4. Confirm that input Frequency of A, B and C detected and auto-
level: matic scanning stops.
1.05 ± 0.45 Vp-p
The stop of automatic scanning means "The station signal is re-
ceived in good condition".
Checking Location:
-DMB22 Board (SideA)-
pin 6
(RFMON)
CN507 IC504
IC501
pin 3
(GND)
22
HCD-GPX5G/GPX7G/GPX8G
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM CD/USB Section
ASYNCHRONOUS SAMPLE
MULTIPLEXER RATE CONVERTER DSP D/A CONVERTER
IC741 IC761 IC762 IC763
A
L-OUT
ASDATA0 118 6 1C0 1Y 7 4 SDIN SDOUT 23 11 SDIN1 SDOUT1 27 2 DATA VOUT L 7 (Page 24)
BCKO 25