Datasheet FFH-2005AX Service manual (LG)

- 2 -

CONTENTS

1. SERVICING PRECAUTIONS

......................................................................................................................

3

2. ESD PRECAUTIONS

..................................................................................................................................

5

3. SPECIFICATIONS

......................................................................................................................................

6

4. ADJUSTMENTS

..........................................................................................................................................

8

5. TROUBLESHOOTING GUIDE

..................................................................................................................

10

6. WAVEFORMS OF MAJOR CHECK POINT

..............................................................................................

21

7. BLOCK DIAGRAM

....................................................................................................................................

23

8. SCHEMATIC DIAGRAMS

.........................................................................................................................

24

9. WIRING DIAGRAM

...................................................................................................................................

30

10. PCB LAYOUTS

.........................................................................................................................................

31

11. INTERNAL BLOCK DIAGRAM OF ICs

.....................................................................................................

34

12. REPAIRS REGARDING CD MECHANISM

...............................................................................................

52

13. EXPLODED VIEW/PARTS LIST(CABINET/TAPE DECK MECHANISM/CD/PICK-UP)

...........................

53

14. SPEAKER EXPLODED VIEW/PARTS LIST

.............................................................................................

56

15. REPLACEMENT PARTS LIST

..................................................................................................................

57

- 3 -

SERVICING PRECAUTIONS

NOTES REGARDING HANDLING OF THE PICK-UP

1. Notes for transport and storage

1) The pick-up should always be left in its conductive bag until immediately prior to use.

2) The pick-up should never be subjected to external pressure or impact.

2. Repair notes

1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.

2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board.

3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched.

4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.

5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort this.

6) Never attempt to disassemble the pick-up. Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

Storage in conductive bag

Drop impact

NEVER look directly at the laser beam, and don’t let contact fingers or other exposed skin.

Magnet

How to hold the pick-up

Pressure

Cotton swab

Conductive Sheet

- 4 -

NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1. Preparations

1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care.

2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust.

2. Notes for repair

1) Before replacing a component part, first disconnect the power supply lead wire from the unit

2) All equipment, measuring instruments and tools must be grounded.

3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.)

4) To prevent AC leakage, the metal part of the soldering iron should be grounded.

5) Workers should be grounded by an armband (1MΩ)

6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband.

7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.

CLEARING MALFUNCTION

You can reset your unit to initial status if malfunction occur(button malfunction, display, etc.). Using a pointed good conductor(such as driver), simply short the RESET jump wire on the inside of the

volume knob for more than 3 seconds. If you reset your unit, you must reenter all its settings(stations, clock, timer)

NOTE: 1. To operate the RESET jump wire, pull the volume rotary knob and release it.

2. If you wish to operate the RESET jump wire, it is necessary to unplug the power cord.

Armband

Conductive Sheet

Resistor (1 Mohm)

VOLUME KNOB

UP

DOWN

VOLUME

RESET jump wire

- 5 -

ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive

surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can

generate electrical charges sufficient to damage ESD devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD

devices.

6. Do not remove a replacement ESD device from its protective package until immediately before you are

ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the

protective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER

SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion

such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).

[CAUTION. GRAPHIC SYMBOLS]

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

- 6 -

SPECIFICATIONS

1. AMP SECTION

1) Power Output (6 Ω, 2 channel, T.H.D. 10%) 50W+50W

2) T.H.D 0.2%

3) Frequency Response (-3dB down) 40Hz~50kHz

4) Signal-to-noise Ratio 83dB

5) Input Sensitivity AUX 400±50mV

6) Channel Difference 1kHz 2dB

2. TUNER SECTION

1) FM/OIRT

1) Frequency Range 87.5MHz~108MHz or 65.0MHz~74.0MHz & 87.5MHz~108MHz

2) Intermediate Frequency 10.7MHz

3) Sensitivity (69MHz/70MHz/71MHz/90.1MHz/98.1MHz/106.1MHz) 12dB

4) Signal-to-noise Ratio 98.1MHz(Mono/Stereo) 62dB/58dB

5) Image Rejection 106.1MHz 35dB

6) IF Rejection 90.1MHz 65dB

7) Distortion 98.1MHz(Mono/Stereo) 1.2%

8) Frequency Response (-3dB) 60Hz~12.5kHz

9) Stereo Separation (100Hz/1kHz/10kHz) 23dB

2) AM(MW)

1) Frequency Range 522kHz~1611kHz

2) Intermediate Frequency 455kHz

3) Usable Sensitivity 55dB

4) Image Rejection (1404kHz) 25dB

5) IF Rejection (603kHz) 40dB

6) Selectivity (1008kHz) 23dB

7) Signal-to-noise Ratio (1008kHz) 35dB

8) Distortion (1008kHz) 1.5%

9) Frequency Response (1008kHz)

100Hz~2000Hz

- 7 -

3. TAPE DECK SECTION

1) Tape Speed (MTT-111) / Normal Speed 4.75(+2%/-1%) cm/sec

2) Wow Flutter (MTT-111) 0.25%

3) Fast Forward and Rewind Time (C-60) 120sec

4) Frequency Response (6dB range) 125Hz~8kHz

5) Signal-to-noise Ratio (Playback/Record) 46dB/43dB

6) Distortion (Playback/Record) 3% / 4%

7) Crosstalk (Playback: 1kHz) 55dB

8) Channel Separation (Playback: 1kHz) 45dB

9) Erase Ratio 55dB

4. COMPACT DISC PLAYER SECTION

1) Frequency Response (40Hz-18kHz) +0.5/-3.0dB

2) Signal-to-noise Ratio (1kHz) 70dB

3) Dynamic Range (1kHz) 70dB

4) T.H.D. (1kHz) 0.2%

5) Separation (100Hz/1kHz/10kHz) 45dB/45dB/40dB

6) Access Time Short / Long 2sec/6sec

5. VIDEO SECTION

1) Output Level 1Vp-p

6. GENERAL

1) Power requirement Refer to the back panel of unit

2) Power consumption 110W

3) Dimension (W x H x D)

273 x 330 x 360 (mm)

4) Weight (net)

8.0kg

NOTE : specification are subject to change without notice in the course of product improvement.

- 8 -

ADJUSTMENTS

This set has been aligned at the factory and normally will not require further adjustment. As a result, it is not recommended that any attempt is made to modificate any circuit. If any parts are replaced or if anyone tampers with the adjustment, realignment may be necessary.

IMPORTANT

1. Check Power-source voltage.

2. Set the function switch to band being aligned.

3. Turn volume control to minimum unless otherwise noted.

4. Connect low side of signal source and output indicator to chassis ground unless otherwise specified.

5. Keep the signal input as low as possible to avoid AGC and AC action.

TAPE DECK ADJUSTMENT

1. AZIMUTH ADJUSTMENT

Figure 2. Azimuth Adjustment Connection Diagram

CH1 CH2

Speaker Out

Playback Mode

Head

Test Tape MTT-114

L ch

R ch

GND

Dual-trace synchroscope

Electronic Voltmeter

L out

R out

Unit

Deck Mode Test Tape Test Point Adjustment Adjust for

A Deck Playback MTT-114 Speaker Out Azimuth Screw Maximum

B Deck Playback MTT-114 Speaker Out Azimuth Screw Maximum

- 9 -

2. MOTOR SPEED ADJUSTMENT

Figure 3. Motor Speed Adjustment Connection Diagram

Deck Mode Test Tape Test Point Adjustment Adjust for Remark

Normal Speed MTT-111 Speaker Out VR401 3kHz ± 1% A Deck

HI-Speed MTT-111 Speaker Out more than 5.4kHz HI-Speed Dubbing Mode

3. RECORD BIAS ADJUSTMENT

Head

Unit

PN402

GND

Record/Playback head

Test Tape MTT-5511

Record/Playback and Pause Mode

Frequency Counter

Deck Mode Test Tape Test Point Adjustment Adjust for

Rec/Pause MTT-5511 PN402 L403 90kHz±5kHz

Figure 4. Record Bias Adjustment Connection Diagram

Head

Test Tape MTT-111

Record/Playback head

Playback Mode

L out

Unit

R out

Speaker Out

GND

Frequency Counter

TROUBLESHOOTING GUIDE

1. POWER PART

Turn power on.

PN302 5.6V check?

PN302 Defective.

IC703 Surrounding circuitry defective.

IC703 defective.

IC301 defective.

IC801 defective.

IC301 defective.

•

PN808 defective.

•

Pattern defective.

•

X301 defective.

•

IC301 defective.

IC301 16, 46, 72, 90 input +5V

IC703 check?

• Pin 1 + 12V

• Pin 3 + 6.3V

IC301 Pin 79 power output?

IC301 Pin 97 HRST output?

IC801 Pin 13,15,17,4 Check?

IC301 Pin 12 Reset check.

OK

IC301 Pin 98,99,100,97 Check?

- 10 -

OFF

ON 5V

PCTL

HRST

13 15

98 99

100

97

17

4

NO NO

NO

YES

- 11 -

2. CD PART

DOOR OPEN/CLOSE

CHECK? (LOADING)

Is rotate turret?

(A) When laser does not light.

(B) When laser lights.

Is DISC play?

Is lead-in?

Is audio output?

2-1

2-2

2-3

2-4

2-5

- 12 -

2-1. DOOR OPEN/CLOSE PART(LOADING)

Door open/close?

IC809 Pin 2, 10 Output?

• ZD803 defective.

• +12V-CD defective.

•

IC809 defective.

•

2,10 pattern defective.

Pick-up MOTOR? Pick-up defective.

OK

• CLOSE leaf s/w defective.

• IC801 Pin 2, 3 defective.

• ZD803 (4.7V)?

• IC809 surrounding circuitry check?

IC809 Pin 5,6 input?

56

OPEN L H

CLOSE H L

NO

YES

- 13 -

2-2. TURRET PART

OK

Is Rotation turret?

Limit S/W 0V(LOW) check?

IC801 Pin 47, 51, 93, 94 check?

IC808 Pin 15, 16, output check?

PN802 input check?

Pick-up check?

Pick-up defective.

IC808 Pin 11, 12 output pattern defective.

PN805 connector check.

IC801 DATA, CLK, XLT check?

IC801 defective.

•

IC801 Pin 20, 21, 23 Pattern defective.

•

IC827 defective.

•

IC827 X-TAL Pin 8, 9 defective.

IC827 36, 37, 38 check?

IC806 Pin 43 output check?

IC808 Pin 11, 12 output check?

• IC808 Pin 10 pattern defective.

• IC806 defective.

Down leaf S/W(PN804) 0V (LOW) check?

leaf S/W defective.

• IC801 defective.

• IC801 Pin 47, 51, 93, 94 pattern defective.

• IC806 Pin 35, 36, 37 input defective.

• IC806 defective.

• IC808 defective.

• IC808 Pin 9, 14 input defective.

• IC808 Pin 15, 16, output defective.

NO NO

NO

YES

- 14 -

2-3. DISC PLAY PART(A, B)

(A) When laser does not light.

IC806 Pin 72 2.8V(LD) check?

•

IC806 defective.

•

IC806 Pin 71 defective.

•

Q801 defective.

•

R833 defective.

PN801 defective.

Pick-up defective.

Q801 Collector 2.0V?

PN801 check?

Pick-up lens check?

OK

NO

YES

- 15 -

(B) When laser lights

(C)

Does the lens move up and

down?

IC806 Pin 48 output (FEO)?

•

IC806 defective.

•

C811 defective.

•

IC806 Pin 25 input defective.

•

IC806 defective.

•

PN801 defective.

•

Pick-up defective.

IC806 Pin 26, 27 output check?

IC806 Pin 79 RFO output?

Q801 defective.

NO NO

NO

YES

- 16 -

(C)

The wavefrom of IC806 Pin 79 is below figure?

IC806 “FOK” signal output? (Pin 40 check?)

IC801 Pin 81 FOK input check?

IC806 “FEO” output? (Pin 48)

IC827 FZC and SENS output check?

IC827 SMDP signal output? Pin 75 check?

IC808 disc MOTOR output 17, 18 check?

• Pick-up defective.

• PN802 defective.

• Turntable height error.

• Laser diode degraded.

• IC801 Pin 81 defective.

• IC806 defective.

• IC808 defective.

• IC808 Surrounding circuitry defective.

• Pin 75 pattern defective.

• X802 defective.

• IC827 defective.

• IC806 defective.

• IC806 Pin 78, 79, 80, 3, 4 defective.

• IC806 defective.

• PN801 connector defective.

• Pick-up defective.

NO

YES

- 17 -

Is leas-in?

IC827 Pin 66 EFM check?

IC806 defective.

IC801 defective.

IC801 Pin 16 SQCK check?

IC827 defective.

IC801 defective.

•

IC827 Pin 25 pattern defective.

•

IC827 defective.

IC801 Pin 14 input check?

IC827 Pin 25 “GFS” input?

IC801 Pin 88 SCOR check?

OK

NO

YES

2-4. Is Lead-in

- 18 -

2-5. Audio signal KARAOKE AND VCD(A, B)

(A) KARAOKE AUDIO.

IC829 Pin 49 input check?

IC814 Pin 107, 108, 109 output?

IC814 defective.

IC825 Pin 14, 16 output?

RESET surrounding circuitry defective.

OK

defective.

IC824 Pin 1 input check?

IC824 Pin 3, 6, 10 input check?

IC825 Pin 1, 2, 3 input check?

IC825 defective.

IC801 defective.

IC829 defective.

IC824 defective.

IC830 DATA LINE ADRS LINE check?

IC825 defective.

IC829 Pin 17 RESET check?

•

IC801 defective.

•

IC801 Pin 52 defective.

(B) VCD AUDIO.

OFF

VCD

ON

KARAOKE

NO

YES

- 19 -

3. VIDEO PART

5V

PICTURE DEFECTIVE.

IC803 Pin 8 check?

IC814 defective.

IC828 Pin 52 “RSTB” check?

IC828 “RGB” input check?

IC828 defective.

OK

COLOR DEFECTIVE.

3-1

3-2

•

IC801 defective.

•

IC803 defective.

YES

NO

- 20 -

COLOR DEFECTIVE.

3-2

5V

R882 defective.

IC828 defective.

OK

R882 check?

R882

NO

YES

- 21 -

WAVEFORMS OF MAJOR CHECK POINT

1. HF signal (RF signal ) waveform (Test Point PN809) during normal play

2. EFM signal (pin31 of IC 806)waveform during Normal Play

3. Focus coil drive waveform(Pin NO 1, 2 of IC 808)

• When focus search failed or there is no disc on the tray

• Focus coil drive waveform(pin NO 1, 2 of IC808) and FOK

(pin NO 40 of IC 806) when focus search is accomplished

4. Tracking coil drive waveform (pin NO 25 of IC 808) and TEO during track traverse (1) When time division is 20nS/div

(2) When time division 0.5nS/div.

(During forward track traverse)

(3) When time division is 0.5nS/div.

(During backward Track Traverse)

5. Feed motor drive waveform(pin NO 10 of IC 808) During normal play

CH1 : FOCUS COIL DRIVE

SIGNAL 2V/Div.

CH2 : FOAK

CH1 : TEO(TP801)

1V/Div.

CH2 : TRACKING COIL DRIVE

SIGNAL 2V/Div.

(

CH1 : TEO(TP801)

1V/Div.

CH2 : TRACKING COIL DRIVE

SIGNAL 2V/Div.

(

CH1 : TEO(TP801)

1V/Div.

CH2 : TRACK COIL DRIVE

SIGNAL 2V/Div.

(

0.5V/Div. 500nS/Div.

(

2V/Div. 500nS/Div.

(

0.5V/Div. 500nS/Div.

OV

OV (CH1)

(CH2)

(CH1)

(CH2)

(CH1)

(CH2)

OV

- 22 -

MEMO

BLOCK DIAGRAM

NOTE: Warning

Parts that are shaded are critical With respect to risk of fire or electrical shock.

- 23 -

SCHEMATIC DIAGRAMS

• MAIN

NOTE: Warning

Parts that are shaded are critical With respect to risk of fire or electrical shock.

NOTE:

1. Shaded(■) parts are critical for safety.Replace only

with specified part number.

2. Voltages are DC-measured with a digital voltmefer during Play mode.

- 24 -

NOTES : 1. Resistance values are indicted in ohms unless otherwise specified (K=1,000, M=1,000,000).

2. Capacitance values are shown in microfarads unless otherwise (P=MICRO-MICRO FARADS).

3. Schematic diagram for this model are subject to change for improvement without prior notice.

• TUNER & DECK

- 25 -

NOTES : Resistance values are indicted in ohms unless otherwise specified (K=1,000, M=1,000,000).

Capacitance values are shown in microfarads unless otherwise (P=MICRO-MICRO FARADS).

Schematic diagram for this model are subject to change for improvement without prior notice.

• FRONT

- 26 -

NOTES : Resistance values are indicted in ohms unless otherwise specified (K=1,000, M=1,000,000).

Capacitance values are shown in microfarads unless otherwise (P=MICRO-MICRO FARADS).

Schematic diagram for this model are subject to change for improvement without prior notice.

• MIC

- 27 -

• MIDI

- 28 -

• CD/MPEG

- 29 -

WIRING DIAGRAM

- 30 -

NOTES : Resistance values are indicted in ohms unless otherwise specified (K=1,000, M=1,000,000).

Capacitance values are shown in microfarads unless otherwise (P=MICRO-MICRO FARADS).

Schematic diagram for this model are subject to change for improvement without prior notice.

PCB LAYOUTS

• MAIN P.C. BOARD

- 31 -

• FRONT P.C. BOARD

- 32 -

• CD MAIN P.C. BOARD

- 33 -

■ LA1837

FM SD

ADJ

3 rd 5 th

DECODER

ANTI-BIRDIE

FM

BLOCK DIAGRAM

INTERNAL BLOCK DIAGRAM OF ICs

Pin Functions

- 34 -

- 35 -

- 36 -

Pre Out

Ch2

3.3µF

1000µF

47µF

0.018µF

1000µF

3.3µF

47µF

1.2µF

100 µF

R . R

Vcc

1000 µF

47µF

0.018µF

10kΩ

150kΩ

1MΩ

2.2kΩ

Rec IN Ch2

Rec

IN

Rec IN Ch1

ALC

Rec Out Ch2

180kΩ

Gv

Gvo

180kΩ

1kΩ

100kΩ

100Ω

10kΩ

10Ω

300kΩ

9.1kΩ

100Ω

Pre IN Ch2/B

(Play Rec)

Pre IN Ch2/A

(Play only)

Pre IN Ch1/B

(Play Rec)

Pre Out

Ch1

Pre IN Ch1/A

Ch1/B

NF

Ch2/A

Ch1/A

Ch1/B

Gvo

Gv

Gvo

Gv

Vcc

M

N

NF

Ch1

Ch2

Gvc

GV

Ch2

ALC

GND

Rec

15

14

13

12

11

23

24

1

2

161718192122

IN

Vref1

Vref

Vref2

A/B

Metal Out

Pre Out

REC Out

Rec Out Ch1

Mix Out

GND1 M/N

6.8kΩ

A

B

1000pF

6.8kΩ

9.1kΩ

20

10 9876435

M/N

■ KIA6289N

■ KA8301

DRIVER

PRE

LOGIC

23456789101

GND

Vout1

Vz1VrFin

Rin

Vcc1

Vcc2

Vz2

Vout2

- 37 -

■ KIA7805 P/PI ~ KIA7824P/PI

3

1

2

4

R

12

R

1

C

21

R

12

Q

1

Q

7

Q

13

Q

10

Q

6

Q

5

Q

4

Q

3

Q

11

Q

15

Q

14

Q

9

Q

8

Q

16

Q

17

Q

INPUT

OUTPUT

GND

2

Q

1

Z

18

R

8

R

9

R

13

R

11

R

17

R

5

R

6

R

1

R

2

RR

16

R

20

R

19

R

14

R

10

R

7

R

- 38 -

■ KB9224

- 39 -

PIN DESCRIPTION

- 40 -

PIN DESCRIPTION (Continued)

- 41 -

■ TDA7440D

L-IN1

100K

48918

27

21 22

20

26

24 25

LOUT

SCL SDA

DIG_GND

ROUT

V

S

AGND

R

B

R

B

14 15

10 11 19 12 13 23

5

G

6

7

3

2

INPUT MULTIPLEXER

+GAIN

MUXOUTR INR TREBLE(R) BIN(R) BOUT(R) CREF D98AU883

0/30dB

2dB STEP

MUXOUTL

VOLUME TREBLE

I CBUS DECODER + LATCHES

BASS

SPKR ATT

LEFT

VOLUME TREBLE BASS

SUPPLY

V

REF

SPKR ATT

RIGHT

INL TREBLE(L) BOUT(L)BIN(L)

1

28

L-IN2

L-IN3

L-IN4

R-IN1

R-IN2

R-IN3

R-IN4

2

PIN DESCRIPTION (Continued)

- 42 -

■ KS9287

BLOCK DIAGRAM

- 43 -

PIN DESCRIPTION

- 44 -

PIN DESCRIPTION (Continued)

- 45 -

PIN DESCRIPTION (Continued)

- 46 -

■ KA9259

BLOCK DIAGRAM

PIN DESCRIPTION

- 47 -

■ LC72131, 72131M

B01 B02 B03 B04 I01 I02

XIN

PD

AIN

AOUT

IFIN

XOUT

FMIN

AMIN

CE

DI

CL

D0

VDD

VSS

REFERENCE DIVIDER

PHASE DETECTOR CHARGE PUMP

UNLOCK DETECTOR

UNIVERSAL COUNTER

DATA SHIFT REGISTER

LATCH

12bits PROGRAMMABLE

DIVIDER

SWALLOW COUNTER

1/16. 1/17 4bits

POWER

ON

RESET

CCB

I/F

1

2

■ TDA7296

C2

22

µF

R2

680

Ω

IN-

IN+

2

3

4

10

9

C4 10

µF

1

STBY-GND

C3 10

µF

R4 22K

R5 10K MUTE

STBY

VM

VSTBY

IN+MUTE

R1 22K

C1 470nF

R3 22K

C7 100nF

+Vs

7

8

-Vs

C9 100n

F

15

-PWVs

-Vs

C8 1000

µF

MUTE

THERMAL

SHUTDOWN

S/C

PROTECTION

STBY

+Vs

C6 1000

µF

+PWVs

13

14

6

OUT

C5

22

µF

BOOTSTRAP

D93AU011

- 48 -

■ MSGEQ7

■ UDA1330T

Audio

In

Anti-Alias

Filter

Clock

Oscillator

Output

Multiplexor

CKIN

Reset

63Hz

Bandpass

160Hz

Bandpass

400Hz

Bandpass

1kHz

Bandpass

2.5kHz

Bandpass

6.25kHz

Bandpass

16kHz

Bandpass

Peak

Detector

Peak

Detector

Peak

Detector

Peak

Detector

Peak

Detector

Peak

Detector

Peak

Detector

Strobe

DC Out

DIGITAL INTERFACE

UDA1330ATS

VOLUME/MUTE/DE-EMPHASIS

INTERPOLATION FILTER

NOISE SHAPER

DAC

13 15 12

1614

6

BCK

WS

DATA I

SYSCLK

V

O(L)

V

DDA

V

SSA

V

O(R)

APPSEL APPL0 APPL1 APPL2 APPL3

V

DDD

V

SSD

V

ref(DAC)

3

45

7 11 10

9

8

2

1

DAC

CONTROL

INTERFACE

- 49 -

■ GD74HC00D

■ GD74HC04D

■ GD74HC32D

1

2

3

4

5

6

7

D

oa

D

oa

D

ob

1 2

3

D

ob

Q

0

Q

0

D

1a

D

1b

Q

1

GND

TOP VIEW

PIN CONFIGURATION LOGIC DIAGRAM FUNCTION TABLE

8

9

10

11

12

13

14

V

cc

D

3b

D

3a

Q

3

D

2b

D

2a

Q

2

D

1a

D

1b

4 5

6

Q

1

D

2a

D

2b

9 10

8

Q

2

D

3a

D

3b

Vcc = Pin14 GND=Pin7

H=High voltage level L=Low voltage level

12 13

11

INPUTS OUTPUT

Q

3

D

naDnb

Q

n

LL

H

LH

H

HL

H

HH

L

1

2

3

4

5

6

7

1A

1Y

2A

2Y

3A

3Y

TOP VIEW

PIN CONFIGURATION

14

13

12

11

10

9

8

V

cc

6A

6Y

5A

5Y

4A

4Y

Vcc = Pin14 GND=Pin7

1A 1Y

21

2A 2Y

43

3A 3Y

65

4A 4Y

89

5A 5Y

1011

6A 6Y

1213

LOGIC DIAGRAM FUNCTION TABLE

H=High voltage level L=Low voltage level

INPUTS OUTPUT

YA

L

H

L

GND

1

2

3

4

5

6

7

D

oa

D

oa

D

ob

1 2

3

D

ob

Q

0

Q

0

D

1a

D

1b

Q

1

GND

TOP VIEW

PIN CONFIGURATION LOGIC DIAGRAM FUNCTION TABLE

14

13

12

11

10

9

8

V

cc

D

3b

D

3a

Q

3

D

2b

D

2a

Q

2

D

1a

D

1b

4 5

6

Q

1

D

2a

D

2b

9 10

8

Q

2

D

3a

D

3b

Vcc = Pin14 GND=Pin7

H=High voltage level L=Low voltage level

12 13

11

INPUTS OUTPUT

Q

3

D

naDnb

Q

n

LL

L

LH

H

HL

H

HH

H

■ 74HC08D

1

2

3

4

5

6

7

D

oa

D

oa

D

ob

1 2

3

D

ob

Q

0

Q

0

D

1a

D

1b

Q

1

GND

TOP VIEW

PIN CONFIGURATION LOGIC DIAGRAM FUNCTION TABLE

14

13

12

11

10

9

8

V

cc

D

3b

D

3a

Q

3

D

2b

D

2a

Q

2

D

1a

D

1b

4 5

6

Q

1

D

2a

D

2b

9 10

8

Q

2

D

3a

D

3b

Vcc = Pin14 GND=Pin7

H=High voltage level L=Low voltage level

12 13

11

INPUTS OUTPUT

Q

3

D

naDnb

Q

n

LL

L

LH

L

HL

L

HH

H

- 50 -

■ BU1427AK

Pin Description

Pin Name Function pin Name Function

1 BOSD OSD BLUE DATA INPUT

*

33 SLABEB SET MODE MASTER/SLABE

*

2 GD0 GREEN DATA Bit0(LSB)

*

34 ADDH ADD ONE LINE AT NON-HNTER

*

3 GD1 GREEN DATA Bit1

*

35 VREF REFERENCE VOLTAGE (1.29V)

4 GD2 GREEN DATA Bit2

*

36 CGND CHROMA OUTPUT GROUND

5 GD3 GREEN DATA Bit3

*

37 COUT CHROMA OUTPUT

6 GD4 GREEN DATA Bit4 38 VGND COMPOSITE OUTPUT GROUND

7 GD5 GREEN DATA Bit5 39 VOUT COMPOSITE OUTPUT

8 GD6 GREEN DATA Bit6 40 AVSS ANALOG(DAC, VREF) GROUND

9 GND DIGITAL GROUND 41 NC -

10 GD7 GREEN DATA Bit7(MSB) 42 IR REFERENCE RESISTOR (1.2K)

11 BD0 BLUE DATA Bit0(LSB)

*

43 AVDD ANALOG (DAC, REF) VDD

12 BD1 BLUE DATA Bit1

*

44 YGND LUMINANCE OUTPUT GROUND

13 BD2 BLUE DATA Bit2

*

45 YOUT LUMINANCE OUTPUT

14 BD3 BLUE DATA Bit3

*

46 G4FSC PULLDOWN TO GND

15 OSDSW OSD INPUT ENABLE

*

47 GCLK VIDEO CLOCK INPUT FOR CD-G

16 CDGSWB SELECT Video-CD/CD-G 48 YCOFF DAC(YOUT, COUT) OFF

*

17 BD4 BLUE DATA Bit4 49 YFILON PULLDOWN TO GND

*

18 BD5 BLUE DATA Bit5 50 PAL60B PAL60 ON AT NTB=HIGH $

19 BD6 BLUE DATA Bit6 51 VCLK VIDEO CLOCK INPUT FOR VCD

20 BD7 BLUE DATA Bit7(MSB) 52 RSTB LOGIC PART INITIAL RESET $

21 GND DIGITAL GROUND 53 CLKSW DIVIDE INPUT CLK ENABLE

22 NTB SELECT NTSC/PAL MODE 54 RD0 RED DATA Bit0 (LSB)

*

23 IM0 INPUT MODE SET Bit0

*

55 RD1 RED DATA Bit1

*

24 IM1 INPUT MODE SET Bit1

*

56 RD2 RED DATA Bit2

*

25 TEST1

NORMALLY PULLDOWN TO GND*57 ROSD OSD RED DATA INPUT

*

26 TEST2

NORMALLY PULLDOWN TO GND*58 RD3 RED DATA Bit3

*

27 CVSY C-SYNC OR V-SYNC INPUT 59 RD4 RED DATA Bit4

*

28 HSY H-SYNC INPUT 60 RD5 RED DATA Bit5

*

29 PIXCLX 1/2 FREQ. OF INTERNAL CL 61 VDD DIGITAL VDD

30 BLKB DATA BLANKING ENABLE

*

62 RD6 RED DATA Bit6

*

31 VDD DIGITAL VDD 63 RD7 RED DATA Bit7

*

32 INT

INTERLACE/NON-INTERLACE

64 GDSD OSD GREEN DATA INPUT

*

• • • Internal Pulldown register

$ • • • Internal Pullup register

- 51 -

BLOCK DIAGRM

 



- 52 -

REPAIRS REGARDING CD MECHANISM

IMPROVED METHOD - WHEN THE TRAY GEARS WERE DISTORTED

1. How to open the tray. In case of not suppling power push two hooks (H) of the base, and them open the tray.

2. How to improve the distorted gears.

(1) Do the hole "C" of the cam gear to face forward the pick-up so the pick-up is down like figure. (2) Do the hole "B" of main gear to face forward pick-up, too. (3) Set the last part of main gear to point "A". (4) Push the tray to end.

EXPLODED VIEW/PARTS LIST

257

352

351

354

334

272

266

291

250

273

458

284

285

252

260

288

264

267

268

265

262

277

278

287

286

280

279

286

287

271

287

A26

A41

309

310

A46

303

A43

A48

A00

305

A47

302

354

454

301

454

251

454

• CABINET

- 53 -

• TAPE DECK MECHANISM

500

007

002

500

007

A07-1

A07-2

016

008

014

015

501

002

007

008

014

016

007

002

006

002

018

503

501

005 005

A01

A10

A02

A11

A03

A09

A03

A04

A08

A06

A05

A04

A05

501

LOCA. NO. PART NO. SPECIFICATION

A00 6730S-G005C ADR244AMW/SANKYO L-DOU A01 6768R-ES01E MT91-04012F HEAD ASSY A02 6768R-US01E MT70-00493A UNIT BASE A03 6768R-AS01B MT92-01010K ARM ADR244 A04 6768R-JS01B MT91-01011P PULLEY/FLY A05 6768R-US01A MT92-22010C UNIT CLUTC

A06 6768R-QS01B MT91-15013D MOTOR(ASSY A07-1 6768R-XS01B MT91-21016G SPECIAL PC A07-2 6768R-XS01C MT91-21016F SPECIAL PC

A08 6768R-JS01A MT91-01010T PULLEY/FLY

A09 6768R-ES01D MT91-011012Q HEAD ASSY

A10 6768R-AS01A MT92-01010J ARM ADR244

A11 6768R-US01D MT70-00492A UNIT BASE

002 6768R-GS01D MT72-00383A GEAR ADR24

005 6768R-VS01A MT75-00049A SOLENOID A

006 6768R-DS01A MT72-00069A LEVER ADR2

007 6768R-GS01A MT72-00384A GEAR ADR24

008 6768R-GS01C MT66-00028A GEAR ADR24

014 6768R-GS01F MT72-00408A GEAR ADR24

015 6768R-BS01D 6602-001059 BELT/FELT

016 6768R-BS01A 6602-001055 BELT/FELT

018 6768R-BS01B 6602-001056 BELT/FELT

500 6768R-WS01B 6031-000462 WASHER ADR

501 6768R-WS01D 6031-001037 WASHER ADR

503 6768R-WS01C 6031-000448 WASHER ADR

- 54 -

• CD MECHANISM

416

151

152

155

184

185

184

A35

421

A30

421

168

417

153

159

A26

169

154

158

157

156

418

416

419

165

162

166

420

167

177

176

164

163

175

170

171

174

416

173

172

417

LOCA. NO

PART NO. DESCRIPTION SPECIFICATION

A26 4405SBE001A MECHANISM ASS’Y CDM-H1303 SHIN HEUNG

A30 3040SB0004A BASE PU ASSY(CDM-H1303)

A35 4405SCB001A MECHANISM ASSY

KSM-213CCM SONY HI-FI FRONT LO

151 3390SB0002A TRAY DISC (CDM-H1303)

152 4470SB0011A GEAR TRAY B (CDM-H1303)

153 4470SB0010A GEAR TRAY A (CDM-H1303)

154 4400SB0001B BELT TRAY(CDM-H1303)

155 4680SBP002A MOTOR(MECH) ASSY TRAY

156 6871SF21RAD PWB(PCB) ASSY 3CH M/D SENSOR PWB ASSY

157 4974SB0003A GUIDE WORM (CDM-H1303)

158 4371SB0002A SHAFT ASSY TRAY (CDM-H1303)

159 3390SB0001A TRAY LOADING (CDM-H1303)

162 4400SB0001A BELT MAIN(CDM-H1303)

163 4470SB0003A GEAR PULLEY (CDM-H1303)

164 4470SB0004A GEAR LOADING (CDM-H1303)

165 6871SB21RAD PWB(PCB) ASSY 3CH M/D U/D/O/C PWB ASSY

166 4470SB0006A GEAR PU DOWN (CDM-H1303)

167 4470SB0008A GEAR PU UP-B (CDM-H1303)

168 4471SB0001A GEAR ASSY GEAR CAM ASSY

169 4860SB0002A CLAMP CLAMP ASSY

170 4974SB0001A GUIDE CAM (CDM-H1303)

171 4970SBN002A SPRING CAM (CDM-H1303)

172 3040SB0002A BASE MAIN(CDM-H1303)

173 6871SD21RAD PWB(PCB) ASSY 3CH M/D CAM PWB ASSY

174 6871SC21RAD PWB(PCB) ASSY 3CH M/D OPEN PWB ASSY

175 4680SBP001A MOTOR(MECH) PULLEY ASSY (CDM-H1303)

176 4470SB0007A GEAR PU UP-A (CDM-H1303)

177 4470SB0005A GEAR MAIN (CDM-H1303)

184 4900SB0001A DAMPER DAMPER RUBBER

185 3040SB0003A BASE PU(CDM-H1303)

416 88H-0004 CD MECHA PARTS 3X12X12FNM

417 88H-0002 CD MECHA PARTS 3X9X12FZMY

418 353-025BAAA SCREW D3.0 L8.0 MSWR3 / (BK)

419 88H-0003 CD MECHA PARTS 3X12X10FZMY

420 353S353F SCREW D2.6 L4.0 MSWR3 / (BK)

421 6756SBX001A

CD MECHANISM PARTS SCREW 2.6X10X10XFZMY CDM-H813

- 55 -

- 56 -

SPEAKER EXPLODED VIEW/PARTS LIST

MODEL: FE-2005VE

863

862

853

860

859

858

861

856

857

855

861

853

861

854

851

852

853

851

LOCA.NO. PART NO DESCRIPTION SPECIFICATION REMARKS

850 3701SM0019A NET ASSY FE-717E(FRAME/JERSEY) 851 3720SMM032B PANEL FRONT (FE-515E)W/F HOLE NO 852 3530SMM018A GRILLE METAL (FE-717E) 853 353M021A SCREW WOOD,3.5X16, HEAD 6MM,FBK 854 6400SMTY01B SPEAKER,TWEETER PIEZO,20MM,BK,FE-515E SINPUNG 855 6400SCTB01F SPEAKER,TWEETER FE-2005VE (S.M) SAMMI 6OHM 50/ 856 6400SCTH01C SPEAKER,WOOFER FE-2005VE (S.M) SAMMI 6OHM 50/ 857 4766SMN028A FELT DUCT(FE-515/717E) BLACK 858 4766SMN027A FELT WOOFER(FE-515) BLACK 859 3110SMM007A CASE TOP(FE-717E) 860 4350SM0013A RING WOOFER(FE-515E) 861 353M025C SCREW TAPTITE, 3X10 FBK 862 3091SMW026A CABINET ASSY (FE-515E) 863 564M033L CORD,A/V 2.2UF NEGATIVE 2.0M

RUN DATE : 11.FEBRUARY.2003

Datasheet FFH-2005AX Service manual (LG)

Specifications and Main Features

Frequently Asked Questions

User Manual