Sharp GX-M10, GX-M10 (OR), GX-M10 (RD) Service Manual

GX-M10

– 1

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

iPhone not included.

iPad, iPhone, iPod, iPod classic, iPod nano, and
iPod touch are trademarks of Apple Inc., registered
in the U.S. and other countries.

“Made for iPod,” “Made for iPhone,” and “Made for iPad”
mean that an electronic accessory has been designed to
connect specifically to iPod, iPhone, or iPad,
respectively, and has been certified by the developer to
meet Apple performance standards. Apple is not
responsible for the operation of this device or its
compliance with safety and regulatory standards. Please
note that the use of this a

ccessory with iPod, iPhone, or

iPad may affect wireless performance.

PRECAUTIONS FOR USING LEAD-FREE SOLDER

CHAPTER 1. GENERAL DESCRIPTION

[1] Important Service Safety Precaution ................. 1-1

[2] Important Service Notes (for U.S.A only)..... 1-1

[3] Specifications .................................................... 1-2

[4] Name Of Parts ................................................... 1-3

CHAPTER 2. ADJUSTMENTS

[1] CD Section .................................................. 2-1

[2] Test Mode .................................................... 2-1

[3] Standard Specification Of Stereo System

Error Message Display Contents SYSTEM
PROTECT detection and AMP PROTECT

detection display ......................................... 2-1

CHAPTER 3. MECHANICAL DESCRIPTION

[1] Disassembly ................................................ 3-1

CHAPTER 4. CIRCUIT DESCRIPTION

[1] Waveform Of Servo Circuit .......................... 4-1

[2] Voltage ......................................................... 4-2

CHAPTER 5. FLOWCHART

[1] Troubleshooting ........................................... 5-1

CHAPTER 6. MAJOR PART DRAWING

[1] Function Table of IC ..................................... 6-1

[2] LCD Display................................................. 6-5

CHAPTER 7. DIAGRAMS

[1] Main Block Diagram..................................... 7-1

CHAPTER 8. CIRCUIT SCHEMATICS AND PARTS
LAYOUT

[1] Notes On Schematic Diagram ..................... 8-1

[2] Type Of Transistor And LED ........................ 8-1

[3] Schematic Diagram ..................................... 8-2

[4] Chart Of Connecting Wires.......................... 8-7

[5] Wiring Side Of PWB .................................... 8-8

PARTS GUIDE

SERVICE MANUAL

No. SX243GXM10UC/

CONTENTS

PORTABLE CD STEREO SYSTEM

MODEL

SHARP CORPORATION

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.

!

• In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified be used.

GX-M10 (OR

)

[For U.S.A./Canada]

without suffix : GUN METAL COLOR
(OR) : ORANGE COLOR
(RD) : RED COLOR

GX-M10 (RD

)

GX-M10

GX-M10

– 2

PRECAUTIONS FOR USING LEAD-FREE SOLDER

1. Employing lead-free solder

Example:

Indicates lead-free solder of tin, silver and copper.

Lead-free wire solder for servicing

2.

Using lead-free wire solder

When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering
bit, contact our service station or s

ervice branch in your area.

3.

Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C, and as it has poor solder wet ability, you may be apt to keep the soldering bit in contact with the

PWB for extended period of time. However, since the land may be peeled of for the maximum heat-resistance
temperat ure of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn
on and off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit
after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.
Be careful when replacing parts with polarity indic

ation on the PWB silk.

"MAIN, iPod, DOOR SWITCH, SMPS, DISPLAY, KEY, USB, TRANSIT, SUBW OOFER FLASH (R-CH),
SUBWOOFER FLASH (L-CH), BATTERY TERMINAL 1, BATTERY TERMINAL 2, AC INLET PWB" of this
model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWB and
service manuals. The alphabetical character following LF shows the type of lead-free solder.

DescriptionParts No.Ref. No.

PWB-A 92LPWB8678MANS MAIN(A1), iPod (A2), DOOR SWITCH (A3)

PWB-B RUiTZA056AWZZ SMPS

DISPLAY (C1) / KEY (C2) / USB (C3) / TRANSIT (C4) /
SUBWOOFER FLASH (L-CH) (C5) / SUBWOOFER FLASH (R-CH) (C6) /
BATTERY TERMINAL 1 (C7) / BATTERY TERMINAL 2 (C8) / AC INLET (C9)
[ For ORANGE Version and GUN METAL Version ]

92LPWB8678DPLSPWB-C

DISPLAY (C1) / KEY (C2) / USB (C3) / TRANSIT (C4) /
SUBWOOFER FLASH (L-CH) (C5) / SUBWOOFER FLASH (R-CH) (C6) /
BATTERY TERMINAL 1 (C7) / BATTERY TERMINAL 2 (C8) / AC INLET (C9)
[ For RED Version ]

PWB-C

92LPWB8761DPLS

i

GX-M10

1 – 3

CHAPTER 1. GENERAL DESCRIPTION

Before returning the audio product to the user, perform
the following safety checks.

2. Inspect all protective devices such as insulating
materials, cabinet, terminal board, adjustment and
compartment covers or shields, mechanical insulators
etc.

3. To be sure that no shock hazard exists, check for
leakage current in the following manner.

*

Plug the AC line cord directly into a

120 volt AC outlet.

*Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series
with all exposed metal cabinet parts and a known
earth ground, such as conduit or electrical ground
connected to earth ground.

*

Use a VTVM or VOM with 1000 ohm per volt, or
higher, sensitivity to measure the AC voltage drop
across the resistor (See diagram).

* Connect the resi

stor connection to all exposed metal
parts having a return path to the chassis (antenna,
metal cabinet, screw heads, knobs and control shafts,
escutcheon, etc.) and measure the AC voltage drop
across the resistor.

All check must be repeated

with the AC line cord plug

connection reversed.

Any reading of 0.3 volt RMS (this corresponds to 0.2
milliamp. AC.) Or more is excessive

and indicates a
potential shock hazard which must be corrected before
returning the audio product to the owner.

[2] Important Service Notes (for U.S.A only)

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard)

[1] Important Service Safety Precaution

CAUTION : “These servicing instructions are for use by qualified service personnel only. To reduce
the risk of electric shock do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so”.

WARNING

1. For continued safety, no modification of any circuit should be
attempted.

2. Disconnect AC power before servicing.

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

0.15 µ F

TEST PROBE

1.5k ohms
10W

VTVM

AC SCALE

1. Inspect all lead dress to make certain that leads are
not pinched or that hardware is not lodged between

the chassis and other metal parts in the audio product

.

1 – 1

GX-M10

1 – 4

[3]

Specifications

General

Amplifier

CD player

USB (MP3 / WMA)

Tuner

Speaker

Power source

AC 120 V ~ 60 Hz
15 V (UM/SUM-1, R20) x 10
DC IN 12 V

Power
consumption

AC: Power on: 30 W
DC 12 V: 4.5 A

Dimensions

Width: 30 - 5/16’’ (750 mm)
Height: 10 - 13/16” (275 mm)
Depth: 11 - 1/16” (280 mm)

Weight
(without
batteries and
accessories)

16.8 lbs. (7.6 kg)

Weight
(with batteries)

Approximately 20.2 lbs (9.2 kg)

Output power Front speaker:

RMS: Total 34 watt (17 W per channel
into 3 ohms at 1 kHz, 10% T.H.D.)
FTC: 12.5 watt minimum RMS per
channel into 3 ohms from 200 Hz to
20 kHz, 10% T.H.D.

Subwoofer:
RMS: Total 66 watt into 3 ohms
at 100 Hz, 10% T.H.D.
FTC: 50 watt minimum RMS into
3 ohms from 70 Hz to 200 Hz, 10%
T.H.D.

Output terminals Video output: 1 Vp-p

Headphones: 16 Ω - 50 Ω
(recommended: 32 Ω )

Input terminals Audio In (audio signal):

500 mV/47 k ohms
Mic Input: 200 Ω - 2 kΩ Ø 1/4” (6.3

mm)

Guitar: 100 kΩ - 1 MΩ Ø 1/4” (6.3 mm)

Type Single disc multi-play compact disc

player

Signal readout Non-contact, 3-beam

semiconductor laser pickup

D/A converter Multi bit D/A converter

Frequency
response

20 - 20,000 Hz

Dynamic range 90 dB (1 kHz)

USB host interface

Complies with USB 1.1 (Full

Speed)/2.0 Mass Storage Class.

Support Bulk only and CBI protocol.

Support file

MPEG 1 Layer 3
WMA (Non DRM)

Bitrate support

MP3 (32 ~ 320 kbps)
WMA (64 ~ 160 kbps)

Other

Maximum total number of MP3/WMA

files is 65025.

Maximum total number of folders is

999 INCLUSIVE of root directory.

The ID3TAG information supported

are TITLE, ARTIST and ALBUM only.

Supports ID3TAG version 1 and

version 2.

File system
support

Support USB devices with

Microsoft Windows/DOS/FAT 16/
FAT 32.

2 kbyte block length for sector.

Frequency range FM: 87.5 - 108 MHz

Preset 40 (FM station)

Type

2-way type speaker system
Front Speakers:
3-1/8” (8 cm) - 3 Ω - Full Range
Subwoofer: 5- 1/8” (13 cm) - 6 Ω

- Woofer (light-up)

Maximum input
power

Front Speakers: 34W / Channel
Subwoofer: 66W / Channel

Rated input power

Front Speakers: 17W / Channel
Subwoofer: 33W / Channel

1 – 2

GX-M10

1 – 5

[4] Names Of Parts

1. Equaliser/X-Bass Button

2. Power On/Stand-by Button

3. Demo/Dimmer/Stop Button

4. Tuner/Audio In Button

5. Tuner Preset Down, CD/USB Track Down,
iPod/iPhone Skip Down

6. USB Play/Pause Button

7. Tuner Preset Up, CD/USB Track Up,
iPod/iPhone Skip Up

8. CD Play/Pause Button

9. Volume Down Button

10. iPod Play/Pause Button

11. Volume Up Button

12. Docking station door open knob

13. Timer indicator

14. Remote sensor

15. Docking station

16. USB/iPad Terminal

17. CD compartment

18. CD compartment open knob

Front Panel

1. FM antenna

2. DC 12 V input jack

3. Headphone jack

4. Microphone volume knob

5. Microphone input jack

6. Guitar input jack

7. Guitar volume knob

8. Audio input jack

9. Video output jack

10. AC input jack

11. Cable holder

Rear panel

1. CD Indicator

2. USB Indicator

3. MP3 Indicator

4. WMA Indicator

5. iPod Indicator

6. FM Stereo Mode Indicator

7. Stereo Station Indicator

8. Total Indicator

9. Folder Indicator

10. Title Indicator

11. MEM (Memory) Indicator

12. X-bass Indicator

13. Sleep Indicator

14. Once Timer Indicator

15. Daily Timer Indicator

16. RDM (Random) Indicator

17. Repeat Indicator

18. Microphone Indicator

19. Guitar Indicator

20. Battery Level Indicator

21. Play Indicator

22. Pause Indicator

Display

X-BASS/EQ

DEMO/DIMMER

VOLUME

iPod

CD

USB

TUNER/AUDIO-IN

ON/STAND-BY

PORTABLE MUSIC BOOMBOX GX-M10

PRESET

R

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I

T

T

OME

R

E
R

O

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N

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S

11 3 579 11

2468 10

13

12

14

16

15

17

18

1 2 3 4 5 6 7

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21
22

1 2 3 4 5 6 7 8 9

10

11

1 – 3

GX-M10

1 – 6

1. Remote Control Transmitter

2. Demo/Dimmer Button

3. Numeric Buttons

4. Equalizer (X-Bass) Button

5. Tuner Preset Up Button

6. Tuner Preset Down Button

7. Folder Button

8. Tuning Up, iPod Cursor Up, Folder Up Button

9. Skip Down, Fast Reverse, Time Down Button

10. Tuning Down, iPod Cursor Down,
Folder Down Button

11. Memory Button

12. Audio In Button

13. USB Play/Pause Button

14. Tuner Button

15. Display Button

16. On/Stand-by Button

17. Mute Button

18. Volume Up Button

19. Volume Down Button

20. Sleep (Clear) Button

21. Play Mode/Random Button

22. Skip Up, Fast Forward, Time Up Button

23. Enter Button

24. Clock (Timer) Button

25. CD Play/Pause Button

26. iPod Play/Pause Button

27. iPod Display (TV OUT) Button

28. CD/USB Stop Button

29. iPod Menu Button

Remote Control

1. Front speaker

2. Subwoofer

3. Bass Reflex Duct

Speakers

T
R
O
P

AB

L

E

MU

I
S

CXO

B
MO
O
B G

X

-

M

1

0

3

21

7

8

10

13

12

11

15

14

5

2

4

6

3

9

16

17

18

19
20

21

22

23
24
25

27

29

28

26

1

1 – 4

GX-M10

2 – 1

CHAPTER 2. ADJUSTMENTS

[1] CD Section

• Adjustment
Since this CD system incorporates the following
automatic adjustment functions, readjustment is not
needed when replacing the pickup. Therefore,
different PWBs and pickups can be combined freely.

Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of
each disc can be performed under optimum
conditions.

Items adjusted automatically

1) Offset adjustment (The offset voltage between the
head amplifier output and the VREF reference
voltage is compensated inside the IC)

* Focus offset adjustment

* Tracking offset adjustment

2) Tracking balance adjustment

3) Gain adjustment (The gain is compensated inside
the IC so that the loop gain at the gain crossover
frequency will be 0 dB.)

* Focus gain adjustment

* Tracking gain adjustment

[2] Test Mode

[Test Mode Input Method]

1. During power stand-by DEMO ON condition, press [1] -> [2] -> [4] -> [5] buttons at remote control sequently.

5. [Exiting Test Mode]

5.1. While in Version display or in Test Mode Function press ON / STAND-BY button (main unit).

5.2.

2. MCU will start up with software version display as below.

" GX# ymdd$ "

Press EQ/X-BASS Key at Main unit

y : year ( in Hexa code. Eg: 2012 C )
m : month ( in Hexa code. Eg: 07 7, 10 A )
dd : day (Eg: 01)

$ : A, B, C, ...... Z

RR : version (00 ~ 99)
# : area setting H : Europe
U : USA
Vxxxx : Servo F/W version

" GX#_10RR "

Press EQ/X-BASS Key at Main unit

Press EQ/X-BASS Key

at Main unit

" 618Vxxxx "

3. Press [OPEN / CLOSE] button at the main unit to enter the KEY Test Mode.

4. The display will change as below for each main unit button is pressed.

[TUNER / AUDIO IN] : Display "KEY 2-1"
[PRESET DOWN] : Display "KEY 6-3"
[PRESET UP] : Display "KEY 6-4"
[USB PLAY / PAUSE] : Display "KEY 3-1"
[VOL UP] : Display "KEY 6-6"

[STOP] : Display "KEY 6-1"
[CD PLAY / PAUSE] : Display "KEY 4-1"
[VOLUME DOWN] : Display "KEY 6-5"
[iPod PLAY / PAUSE] : Displa

y "KEY 5-1"

[EQ / X-BASS] : Display "KEY 6-2"

All display light up in Backlight On (2sec) => Backlight Off (2sec) => finally display "RESET" and execute reset,
before go to standby (demo).

[3] Standard Specification Of Stereo System Error Message Display Contents
SYSTEM PROTECT detection and AMP PROTECT detection display

Example: In case of speaker abnormal

1: SYSTEM PROTECT
2 : AMP Over Temperature Warning Protect
3 :AMP Shut Down Protect
4 : FAULT

OFF

FLASHING

ON

No.1

1 Frame

(Repeat)

OFFOFF

( 3 Sec )

No.2

No.3 No.4

No.1

No.2

( 3 Sec )

( 3 Sec )

( 3 Sec )

OFF

ON

ON

OFF

FLASHING

ON

OFF

)ceS3 () ceS3 (

( 3 Sec )

In case AMP Shut Down, SYSTEM PROTECT, FAULT PROTECT or AMP Over-Temp Warning Protect has occurred,
the unit will automatically enter to stand-by mode ON/Standby LED willl be flashing as below:-

GX-M10

3 – 1

CD-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE

CHAPTER 3. MECHANISM DESCRIPTION

[1] Disassembly
Caution On Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure
excellent performance:

1. Take compact disc out of the unit.

2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were before disassembling.

4. Take sufficient care on static electricity of integrated circuits and other circuits when servicing.

(A1) x 8
M4 x 14mm

(B1) x 4
M3.5 x 10mm

(B1) x 4
M3.5 x 10mm

(A2) x 2
M3 x 30mm

(C1) x 6
M3 x 30mm

(A2) x 2
M3 x 30mm

(A1) x 8
M4 x 14mm

Figure 2

Figure 1

Front Cabinet Ass’y

(A3) x 1
From Side Cabinet Ass’y

(A3) x 1
From Side Cabinet Ass’y

Side Cabinet Ass’y (Left)

Side Cabinet Ass’y (Right)

Subwoofer (Right)

Subwoofer (Left)

Back Cabinet Ass’y

Back Cabinet Ass’y

Top Cabinet Ass’y

Front Cabinet Ass’y

CAUTION:

TO REMOVE SPEAKER UNIT, PRESS THESE LOCKING TABS
TO RELEASE SPEAKER WIRES.

SPEAKER UNIT

LOCKING

TA B

LOCKING TAB

SPEAKER

WIRE

STEP REMOVAL PROCEDURE FIGURE STEP REMOVAL PROCEDURE FIGURE

1 Side Cabinet Ass'y (A1)x16 1 8 Speaker (H1)x2 3

(Left/Right) (A2)x4 1 (Left/Right) (H2)x8 3

(A3)x2 2 (H3)x8 5

2Subwoofer (B1)x8 2 (H4)x4 5

(Left/Right) (B2)x4 9 iPod PWB ( J1)x1 6

3 Back Cabinet Ass'y (C1)x6 1 (J2)x1 6

(C2)x9 3,5,11,12 (J3)x2 7
(C3)x2 11 10 Top Cabinet Ass'y (K1)x2 8

4Display PWB (D1)x1 3 11 CD Mechanism Unit (L1)x4 9

(D2)x6 3 12 Door Switch PWB (M1)x1 9
(D3)x2 4 13 Main PWB (N1)x1 8
(D4)x1 4 (N2)x2 8

5 Key PW B (E1)x1 4 (N3)x1 10

(E2)x3 (N4)x7 10
6 USB PWB (F1)x1 3 (N5)x4 11
7Transit PWB (G1)x1 5 14 SMPS PWB (P1)x4 12

(G2)x3 (P2)x1

(G3)x1 15 Subwoofer Flash(Q1)x413

PWB (R-CH / L-CH )
16 AC Inlet PWB (R1)x2 14
17

Battery Terminal 1

(S1)x2 14

and 2 PWB

(S2)x8

1. Speaker Cup .....................

2. Screw.................................

3. Screw.................................

4. Terminal ............................

1. iPod Door...........................

2. iPod Holder Ass'y ..............

3. Screw.................................

1. Screw.................................

1. Screw.................................

1. Screw.................................

1. Screw.................................

2. Mic Knob............................

3. Bracket ..............................

4. Screw.................................

5. Screw.................................

1. Screw.................................

2. Socket ...............................

1. Screw.................................

1. Screw.................................

1. Battery Cover.....................

2. Screw.................................

1. Screw.................................

2. Screw.................................

3. Socket ...............................

1. Screw.................................

2. Terminal ............................

1. Screw.................................

2. Socket ...............................

3. Flat Cable ..........................

1. PWB Holder Ass'y .............

2. Screw.................................

3. Screw.................................

4. Flat Cable ..........................

1. Function Button .................

2. Screw.................................

1. Screw.................................

1. iPod Cover.........................

2. Screw.................................

3. Socket ...............................

GX-M10

3 – 2

(H2) x 4
M3 x 10mm

(H2) x 4
M3 x 10mm

(D2) x 2
M3 x 10mm

(D2) x 4
M3 x 10mm

USB PWB

Key PWB

PWB Holder

Display PWB

(F1) x 1
Special Screw

(C2) x 1
From Main PWB

(E2) x 3
M2.6 x 8mm

(J3) x 2
M3 x 8mm

iPod PWB

iPod Holder Ass’y

(D3) x 2
M2.6 x 8mm

(H3) x 4
M3.5 x 10mm

(H3) x 4
M3.5 x 10mm

(N1) x 1
M3 x 10mm

(K1) x 2
M3 x 10mm

(N2) x 2
Mic Knob

(G3) x 1
From
Transit
PWB

(G2) x 2
M3 x 8mm

(C2) x 1
From Main PWB

(G2) x 1
M3 x 8mm

Tr ansit PWB

iPod Cover
(G1) x 1

(D4) x 1

Function Knob
(E1) x 1

(J1) x 1
iPod Door

(H1) x 1
Speaker Cup

(H1) x 1
Speaker Cup

Figure 6

Figure 7

Figure 5

Figure 8

Figure 3

Figure 4

Front Cabinet Ass’y

Front Cabinet Ass’y

Front Cabinet Ass’y

Back Cabinet Ass’y

Top Cabinet Ass’y

Speaker (Right)

Speaker (Left)

(J2) x 1
iPod Holder Ass’y

(D1) x 1
PWB Holder Ass’y

OPEN

CAUTION:

TO REMOVE SPEAKER UNIT, PRESS THESE LOCKING TABS
TO RELEASE SPEAKER WIRES.

SPEAKER UNIT

LOCKING

TA B

LOCKING TAB

SPEAKER

WIRE

GX-M10

3 – 3

(M1) x 1
M3 x 8mm

Door Switch PWB

Top Cabinet Ass’y

Back Cabinet Ass’y

Subwoofer Flash PWB
(L-CH / R-CH)

Side Cabinet Ass’y (Left / Right)

Back Cabinet Ass’y

Main PWB

SMPS PWB

(N4) x 4
M3 x 10mm

(P1) x 4
M3 x 8mm

(Q1) x 2
M3 x 6mm

(N4) x 3
M3 x 10mm

(N5) x 4
M3 x 8mm

(S2) x 4
M3 x 10mm

(S2) x 4
M3 x 10mm

(R1) x 2
M3 x 10mm

(C2) x 1
From Battery Terminal 1

(C2) x 1
From Main PWB

(P2) x 1
From AC Inlet PWB

(C2) x 1
From AC Inlet PWB

Main PWB

Battery Terminal 2 PWB

Battery Terminal 1 PWB

AC Inlet PWB

Battery Cover
(S1) x 1

Battery Cover
(S1) x 1

(C2) x 1

From Door Switch PWB

(C3) x 1

From Display PWB

(C2) x 1

From CD Motor PWB

(C3) x 1
From CD Pickup Unit

(C2) x 1
From Subwoofer Flash (R-CH)

(C2) x 1
From Subwoofer Flash (L-CH)

(N3) x 1
Bracket

CD Mechanism Unit

(L1) x 4
Special Screw

Figure 9

Figure 12

Figure 13

Figure 14

Figure 10

Figure 11

GX-M10

4 – 1

CHAPTER 4. CIRCUIT DESCRIPTION

[1] Waveform Of Servo Circuit

48

IC1

1

FOP

49

IC1

2

TRP

Figure 1

48

IC1

1

FOP

138

IC1

4

TE

67

IC1

7

RFOUT

Figure 2

138

IC1

4

RFOUT

67

IC1

7

TE

Figure 3

Figure 5

Figure 4

48

IC1

4

FOP

50

IC1

3

SPOUT

GX-M10

4 – 2

[2] Voltage

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin

No.

Voltage ( V)

Pin
No.

Voltage ( V)

1 1.78 17 1.85 33 1.82 49 1.62

2 0.07180.02340.01501.62

3 0.73 19 0.76 35 0.01 51 1.62

4 0.92200.88363.17521.62

5 0.05 21 0.01 37 0.00 53 0.01

6 0.05220.01380.01540.00

7 0.02 23 0.01 39 3.24 55 0.03

8 0.05 24 3.29 40 0.16 56 0.03

9 3.43253.06411.62570.03

10 1.25 26 1.66 42 0.16 58 0. 03

11 3.06 27 -0.02 43 1. 62 59 3.65

12 3.17 28 -0.02 44 0. 16 60 3.65

13 3.06 29 0.01 45 0.16 61 3. 65

14 3.06 30 0.00 46 0.16 62 3. 64

15 3.20 31 1.23 47 0.16 63 1. 59

16 0.00 32 0.05 48 1.88 64 0. 05

IC500

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin

No.

Voltage ( V)

Pin
No.

Voltage ( V)

1 12.03 12 3.22 23 12.04 34 21.90

2 3.17 13 3.22 24 21. 90 35 21.54

3 0.00 14 0.00 25 2.80 36 10.64

4 0.00 15 0.00 26 21. 53 37 0.00

5 3.17 16 1.62 27 21. 53 38 0.00

6 1.62173.24281.063910.60

7 3.24 18 1.62 29 0.00 40 22.07

8 1.62 19 0.00 30 0.00 41 22.07

9 1.18 20 0.00 31 10. 58 42 0.00

10 0.00 21 12.08 32 21. 88 43 22.05

11 0.00 22 12.04 33 21. 86 44 12.09

IC900

Pin
No.

Voltage (V)

Pin

No.

Voltage (V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

1 1.65 12 1.65 23 1.64 34 1.65

2 1.65131.65241.64351.65

3 1.65 141.65 251.64361.65

4 1.65 151.65 261.64371.65

5 1.65 161.65 271.64383.29

6 1.65 17 -0. 01 28 1.64 39 0.00

7 1.65 18 -0. 01 29 1.64 40 3.29

8 1.65191.64301.65413.29

9 1.65 201.64 311.65420.71

10 1.65 21 1.64 32 1.65 43 2. 95

11 1.62 22 1.64 33 1.65 44 2. 75

IC701

Pin
No.

Voltage (V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage (V)

1 3.15 17 2.92 33 3.05 49 3.17

2 3.30180.72343.33503.17

3 3.04 19 2.88 35 2.95 51 3.17

4 0.95203.16363.17523.17

5 0.74213.16373.06533.17

6 3.03223.08380.12543.17

7 1.56233.06393.30553.01

8 0.02240.01403.00562.74

9 0.02253.06413.06571.75

10 3.06 26 3.08 42 3.18 58 0. 00

11 3.05 27 2.20 43 3.18 59 0. 00

12 3.06 28 2.75 44 2.88 60 3. 15

13 3.06 29 3.16 45 2.89 61 3. 17

14 3.06 30 3.30 46 2.89 62 3. 06

15 3.06 31 0.02 47 3.07 63 1. 80

16 0.50 32 0.17 48 2.83 64 3. 06

IC600

Pin
No.

Voltage ( V)

10.17

20.17

30.00

40.00

50.00

60.20

70.08

86.00

IC401

Pin
No.

Voltage ( V)

10.02

20.02

30.00

40.00

50.00

60.04

70.03

80.00

IC431

Pin
No.

Voltage ( V)

16.81

26.11

36.08

40.00

51.62

68.38

7 10.75

86.00

IC451

Pin

No.

Voltage ( V)

16.92

26.06

35.91

40.00

55.91

66.06

76.92

8 11.92

IC461

Pin
No.

Voltage ( V)

14.76

24.11

34.10

40.00

50.00

64.17

74.00

85.90

IC550

Pin
No.

Voltage ( V)

Pin

No.

Voltage ( V)

12.5681.54

20.0091.39

3 5.07 10 0.00

4 3.29 11 0.00

5 0.00 12 0.00

61.45132.53

71.65142.50

IC580

Pin
No.

Voltage (V)

Pin
No.

Voltage ( V)

1 0.13 9 12.06

2 0.00 10 0.00

30.001112.07

4 0.00 12 -0. 10

50.01130.00

60.001412.08

7 0.00 15 0.00

80.001612.08

IC590

Pin

No.

Voltage ( V)

13.25

23.25

3NC

40.00

IC681

GX-M10

4 – 3

Pin
No.

Voltage ( V)

10.73

23.31

30.00

43.78

51.18

IC801

Pin
No.

Voltage ( V)

19.92

2 21.63

35.17

4 -0.02

50.79

60.99

73.09

83.58

IC802

Pin

No.

Voltage (V)

14.98

20.09

30.74

40.05

51.25

65.07

75.04

83.35

IC803

Pin

No.

Voltage (V)

19.94

221.53

35.02

4 -0.07

50.80

60.92

73.09

83.59

IC804

Pin
No.

Voltage ( V)

15.05

20.00

35.05

4NC

53.32

IC805

5.05 5.07 4.24 0.00 0.00 1.74 3.16 12.06 0.00

4.24 0.11 2.97 0.68 0.68 0.01 -0.01 0.01 0.74

5.07 4.83 0.00 0.01 0.01 1.79 -0.01 0.00 0.00

B

E

Q552

Voltage ( V)

Q553

Voltage ( V)

Q554

Voltage ( V)

Q591

Voltage ( V)

Q593

Voltage ( V)

C

TRANSISTOR

TERMINAL

Q492

Voltage ( V)

Q493

Voltage ( V)

Q494

Voltage ( V)

Q551

Voltage ( V)

CD / Servo section

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin

No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin

No.

Voltage ( V)

1 3.33 19 2.80 m 37 1.14 55 1.67 73 1.65 91 3.10 m 109

3.28

127

0.10 m

2 4.10 m 20 3.34 38 1.14 56 1.67 74 0.82 92 3.34 110

3.33

128

3.33

3 4.00 m 21 3.34 39 1.13 57 1.67 75 0.81 93 3.10 m 111

4.90 m

129

0.10 m

4 3.90 m 22 4.30 m 40 1.14 58 1.67 76 422.70 m 94 1.67 112

4.90 m

130

2.80 m

5 3.90 m 23 3.34 41 1.14 59 1.67 77 2.90 m 95 1.67 113

3.33

131

3.33

6 4.00 m 24 4.40 m 42 1.13 60 1.67 78 3.32 96 1.21 114

3.33

132

4.00 m

7 3.34 25 3.34 43 1.14 61 6.10 m 79 3.33 97 3.34 115

0.43

133

4.00 m

81.2

1263.34441.14623.31803.31983.40 m116

1.66

134

3.33

9 2.80 m 27 1.42 45 3.34 63 5.90 m 81 3.70 m 99 3.30 m 117

1.56

135

1.67

10 3.33 28 3.34 46 2.90 m 64 3.32 82 3.70 m 100 3.30 m 118

5.50 m

136

1.09

11 3.32 29 3.34 47 1.20 65 1.65 83 3.70 m 101 1.20 119

1.42

137

344.80 m

12 3.32 30 2.91 48 1.67 66 1.73 84 3.80 m 102 3.30 m 120

3.33

138

1.65

13 4. 00 m 31 2.55 49 1.67 67 1.58 85 3.80 m 103 3.34 121

1.20

139

4.00 m

14 3. 90 m 32 3.34 50 1. 67 68 1.79 86 3.90 m 104 3.23 122

3.30 m

140

4.00 m

15 4. 00 m 3

3 396.50 m 51 1.67 69 1.02 87 1.20 105 3.22 123

0.40 m

141

4.00 m

16 3.33 34 3.26 52 3.90 m 70 1.21 88 3.33 106 3.30 124

3.33

142

4.00 m

17 3.33 35 3.34 53 1.67 71 1.19 89 1.53 107 3. 21 125

3.33

143

4.00 m

18 3.34 36 2. 90 m 54 1.67 72 1.65 90 1.48 108 3.21 126

0.30 m

144

4.00 m

IC1 (MN6627992AB)

GX-M10

4 – 4

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

Pin
No.

Voltage ( V)

1 3. 33 10 4.00 m 19 2.90 m 28 2. 70 m 37 3.34 46 2.70 m

2 4.00 m 11 4.00 m 20 4.00 m 29 3. 33 38 1.42 47 4.00 m

3 3.33 122.80 m214.00 m304.10 m39 3.33 484.00 m

4 4.00 m 13 4.00 m 22 3.90 m 31 3. 34 40 433.10 m 49 3. 33

5 4.00 m 14 3.34 23 4.00 m 32 4.20 m 41 2.80 m 50 4.10 m

6 2.80 m 15 3.33 24 3.33 33 4.20 m 42 4.00 m 51 4.10 m

7 4.00 m 16 3.33 25 4.00 m 34 3.34 43 3.34 52 2.80 m

8 4.00 m 17 3.32 26 4.00 m 35 3.33 44 4.10 m 53 4.00 m

9 3. 33 18 3.32 27 3.34 36 435. 60 m 45 4. 10 m 54 2.80 m

IC6(EM638165 S DRAM )

Pin
No.

Voltage ( V)

1 0.40 m

25.26

348.30 m

4 0.50 m

5 319.30 m

63.29

7 378.60 m

84.31

95.26

10 3.29

IC5(TPS2561D)

Pin
No.

Voltage ( V)

13.80 m

23.33

3 385.10 m

4 418.20 m

5 437.10 m

63.33

73.4m

83.33

IC3( MF1337S395)

Pin
No.

Voltage ( V)

12.57

22.90

32.33

42.80 m

53.26

60.41

73.33

83.33

IC7(W25Q16BV)

Pin

No.

Voltage ( V)

10.66

20.30 m

30.30 m

40.30 m

53.00 m

60.40 m

70.40 m

83.21

IC4(TS3USB++ )

Pin

No.

Voltage ( V)

Pin

No.

Voltage ( V)

1 1.66 15 2.62

2 4.38 16 2.64

3 1.86 17 2.62

4 1.66 18 5.08

5 1.25 19 1.95

6 10.90 m 20 5.08

7 11.00 m 21 1.90 m

8 5.08 22 1.90 m

9 3.30 m 23 1. 66

10 3.30 m 24 5.04

11 2.60 25 5.06

12 2.60 26 1.66

13 2.64 27 1.67

14 2.62 28 5.08

IC12 (SA5888)

GX-M10

5 – 1

CHAPTER 5. FLOWCHART

[1] Troubleshooting

1. When the CD does not function

The CD section may not operate when the objective lens of the optical pickup is dirty. Clean the objective lens, and
check the playback operation. When this section does not operate even after the above step is taken, check the
following items.

Remove the cabinet and follow the troubleshooting instructions.

"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign

matter on the
laser pickup lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned
below."

Turn the power off.

Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.

Do not touch the lens with the bare hand.

2. When a CD cannot be played

2.1. Pressing the CD operation key is accepted, but playback does not occur.

1) Focus-HF system check

2) Tracking system check

3) Spin system check

4) PLL system check

Parts code

1. CD optical pickup Lens cleaner disc UDSKA0004AFZZ

HOW TO USE

CAUTION

Cleaning fluid

Cleaner disc

Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the
brush on the CD cleaner disc which has the mark next to it.
Place the CD cleaner disc onto the CD disc tray with the brush side down, then
press the play button.
You will hear music for about 20 seconds and the CD player will automatically stop.
If it still play continuously, press the stop button.

1.

2.

3.

The CD lens cleaner should be effective for 30-50 operations, however if the
brushes become worn out earlier then please replace the cleaner disc.
If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft
cloth.
Do not drink the cleaner fluid or allow it contact with the eyes. In the event of this
happening then drink and / or rinse with clean water and seek medical advice.
The CD cleaner disc must not be used on car CD players or on computer CD-ROM
drives.
All rights reserved. Unauthorized duplicating, broadcasting and renting this product
is prohibited by law.

GX-M10

5 – 2

(1) Focus-HF system check.

Figure 2

Figure 3

48

49

IC1

IC1

1

FOP

TRP

Figure 1

Without inserting a disc, close the CD top cover and try starting
the playback operation.

2. Does the focus (lens) move up and down ?
(Waveform drawing Figure 1)

1. Is focus servo activated ?
(Waveform drawing Figure 2)

2. Is the HF waveform normal ?
(Waveform drawing Figure 3)

1. Does the pickup move to the PICKUP-IN Switch position ? Sled motor.

Check the focus peripheral circuit.

Check the laser diode driver Q4 peripheral circuit.

Spindle motor.

If the level is not normal.

Pins 50, 51, 48, 49 (55 ~ 62) on IC1.
Check the laser diode driver Q4 peripheral circuit.

3. Is the laser lit ?

4. Is the turntable rotating ?

When a disc is loaded, start playback operation.

Although a CD is inserted and the cover is
closed, "NO DISC" is displayed.

Yes

Yes

Yes

Yes

No

No

No

No

No

No

2

48

138

IC1

IC1

1

FOP

TE

4

67

IC1

RFOUT

7

GX-M10

5 – 3

The tracking servo is not activated.
Check the peripheral circuits at pins 50, 51, 48, 49 on IC1 and
FFC1.

(2) Tracking system check.

If the waveform shown in Figure 4 appears and soon after NO
DISC appears ?

Check the TE waveform at pin 63 on IC1.

"Initialization" is possible, but play is not possible ?

No

Yes

A normal jump operation cannot be completed or the begining of
the track cannot be found.
Check the around pin 49 on IC1.

Yes

"Initialization" is not possible.

No

When a disc is loaded, start play operation.

The RF waveform is normal, but the TOC data cannot be read.

Check the PLL waveform. (Figure 6)

Check around pins 73 ~ 76 on IC1.

Data cannot be read. Check the VCO - PLL (Pin no. 73 ~ 76)
on IC1 system.

(3) Spin system check.

(4) PLL system check.

Press the OPEN/CLOSE switch without inserting a disc, and
then try starting the play operation.

1. The turntable rotates a little ?
(Waveform drawing Figure 5)

Yes

2. The turntable does not rotate.

The spin driver circuit is OK.

Check around pin 50 on IC1, pins 1 and 2 on CNP2.

No

Figure 4

138

67

IC1

IC1

4

TE

RFOUT

7

48

50

IC1

IC1

1

FOP

SPOUT

3

74

75

IC1

IC1

5

PLLF

PLLFO

6

48

IC1

FOP

1

Figure 5

Figure 6

GX-M10

6 – 1

CHAPTER 6. MAJOR PART DRAWING

[1] Function Table Of IC

IC600 CH-IXA369AWA5 : Micro Computer IXA369AW00 ( 1/4 )

Pin
No.

NAME

INPUT/

OUTPUT

TYPE

SOFT

PULL-UP

DESCRIPTION

HARDWARE

PULL-UP

PORT_TYPE

1

HP_SEL

INPUT

CMOS INPUT /

OUTPUT

OFF

HEADPHONE IN DETECTION SWITCH
L : IN , H : OUT

NEED

P3_3/SSI

2

TUN_SDA/DAP_SDA

INPUT /

OUTPUT

CMOS INPUT /

OUTPUT

OFF TUNER/DAP DATA I2C BUS LINE NEED

P3_4/SDA/SCS

3

MODE

INPUT INPUT - CONNECT THIS PIN TO VCC VIA A RESISTOR NEED

MODE

4

XCIN

INPUT

CMOS INPUT /

OUTPUT

OFF 32.768kHz CRYSTAL (SUB CLOCK)

P4_3/XCIN

5

XCOUT

OUTPUT

CMOS INPUT /

OUTPUT

OFF 32.768kHz CRYSTAL (SUB CLOCK)

P4_4/XCOUT

6

RESET

INPUT INPUT -

RESET INPUT. ACTIVE "L"
CONNECT TO WRITER RESET LINE DURING
FLASH

NEED

RESET

7

XOUT

OUTPUT INPUT OFF 8MHz CERAMIC OSCILLATOR (MAIN CLOCK)

P4_7/XOUT(Note1)

8

VSS

-- -GROUND

VSS/AVSS

9

XIN

INPUT INPUT OFF 8MHz CERAMIC OSCILLATOR (MAIN CLOCK)

P4_6/XIN

10

VCC

- - - 3.3V SUPPLY

VCC/AVCC

11

DAP_RST

OUTPUT

CMOS INPUT /

OUTPUT

OFF

DAP RESET CONTROL
H : NORMAL , L : RESET

P5_4/TRCIOD

12

DAP_PWDN

OUTPUT

CMOS INPUT /

OUTPUT

OFF

DAP POWER DOWN CONTROL
H : NORMAL , L : POWER DOWN

P5_3/TRCIOC

13

DAP_MUTE

OUTPUT

CMOS INPUT /

OUTPUT

OFF

DAP MUTE CONTROL
H : MUTE OFF , L : MUTE ON

P5_2/TRCIOB

14

DCDC_EN

OUTPUT

CMOS INPUT /

OUTPUT

OFF

12V SUPPLY CONTROL, ON DURING DEMO/P-ON
H : ON; L : OFF

P5_1/TRCIOA/TRC­TRG

15

DC_ECO

OUTPUT

CMOS INPUT /

OUTPUT

OFF

ECO CTRL
H: OTHERS , L: DC DEMO OFF

P5_0/TRCCLK

16

LCD_CE

OUTPUT

CMOS INPUT /

OUTPUT

OFF LCD DRIVER CHIP ENABLE OUTPUT

P2_7/TRDIOD1

17

LCD_BCKLGHT

OUTPUT

CMOS INPUT /

OUTPUT

OFF

LCD BACKLIGHT CONTROL
L : OFF H: ON

P2_6/TRDIOC1

18

IPOD_DET

INPUT

CMOS INPUT /

OUTPUT

OFF

IPOD IN DETECTION
L : IN , H : OUT

NEED

P2_5/TRDIOB1

19

FAULT

INPUT

CMOS INPUT /

OUTPUT

OFF CURRENT LIMITTER IC ERROR DETECT NEED

P2_4/TRDIOA1

20

USB_EN

OUTPUT

CMOS INPUT /

OUTPUT

OFF

CURRENT LIMITTER IC SELECTOR
H:USB L:OTHERS

P2_3/TRDIOD0

21

IPOD_EN

OUTPUT

CMOS INPUT /

OUTPUT

OFF

CURRENT LIMITTER IC SELECTOR
H:IPOD L:OTHERS

P2_2/TRDIOC0

22

GUI_MUTE

OUTPUT

CMOS INPUT /

OUTPUT

OFF

GUITAR MUTE CONTROL
L : MUTE ON , H : MUTE OFF

P2_1/TRDIOB0

23

DSEL_S

OUTPUT

CMOS INPUT /

OUTPUT

OFF

D+/D- BUS SELECTOR CONTROL
H : IPOD , L : USB

P2_0/TRDIOA0/TRD­CLK

24

RX_IN

INPUT

CMOS INPUT /

OUTPUT

OFF REMOCON SENSOR INPUT

P1_7/TRAIO/INT1

25

LCD_CLK

OUTPUT

CMOS INPUT /

OUTPUT

OFF LCD DRIVER CLOCK OUTPUT

P1_6/CLK0

26

MIC_MUTE

OUTPUT

CMOS INPUT /

OUTPUT

OFF

MIC MUTE CONTROL
L : MUTE ON , H : MUTE OFF

P1_5/RXD0/(TRAIO)/
(INT1)(Note2)