DAEWOO XL 118 Service Manual

Service Manual

MINI COMPONENT SYSTEM

Model :

XL-118

DAEWOO ELECTRONICS CO., LTD.

MINI COMPONENT SYSTEM

XL-118

Table of Contents

SAFETY PRECAUTIONS......................................................................................... 2

ADJUSTMENTS....................................................................................................... 4

EXPLODED VIEW AND PARTS LIST ...................................................................... 5

WIRING DIAGRAM ................................................................................................... 7

BLOCK DIAGRAM .................................................................................................... 8

SCHEMATIC DIAGRAM ........................................................................................... 9

POWER / AMP ................................................................................................................................. 9

TUNER TAPE

CD ..................................................................................................................................................... 12

CONTROL ........................................................................................................................................ 13

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

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

10 11

PCB PATTERN LAYOUT ........................................................................................ 14

ELECTRICAL PART LIST ....................................................................................... 18

- 1 -

Safety Precautions

WARNING

THIS APPLIANCE TO RAIN OR MOISTURE.

CAUTION :

TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

THIS UNIT EMPLOYS A LASER. ONLY QUALIFIED SERVICE PERSONNEL SHOULD REMOVE THE COVER OR ATTEMPT TO SERVICE THIS DEVICE DUE TO POSSIBLE EYE INJURY.

CAUTION :

OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

CAUTION :

PLUG TO WIDE SLOT, FULLY INSERT.

ATTENTION :

LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU'AU FOND.

: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE

CAUTION

RISK OF ELECTRIC SHOCKS

DO NOT OPEN

TO REDUCE THE RISK IF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULTED "DANGEROUS VOLTAGE"

WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE

SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS.

THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE.

CAUTION

LASER SAFETY

USE OF ANY CONTROLS, ADJUSTMENTS, OR PROCEDURES

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF

POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE

Important Safety Instructions

- All the safety and operating instructions should be read before the appliance is operated.

- The safety and operating instructions should be retained for future reference.

- All warnings on the appliance and in the operating instructions should be adhered to.

- All operating and use instructions should be followed.

1. Water and Moisture - The appliance should not be

water - for example, near a bathtub, washbowl, kitchen sink,

used near

laundry tub, in a wet basement, or near a swimming pool, and the like.

PORTABLE CART

Figure 2

only as recommended by the manufacturer.

ceiling

5. Ventilation - The appliance should be situated so location or position does not interfere with ventilation. For example, the appliance on a bed, sofa, rug, or ventilation as a bookcase or cabinet that may impede the flow

through the ventilation openings.

6. Heat - The appliance should be situated away from sources such as radiators, heat registers, appliances (including amplifiers) that

7. Power Sources - The appliance should be power supply only of the type instructions or as marked

8. Grounding or Polarization - The precautions that taken so that the grounding or

appliance is not defeated.

9. Power - Cord Protection - Power-supply cords routed so that they are not likely to be by items placed upon or attention to cords at point where

10.Protective Attachment Plug - If the appliance is equipped with an attachment plug having overload safety feature. resetting of required, be sure the replacement plug

same overload protection as the original plug.

11.Cleaning - The appliance should be cleaned only as recommended by the manufacturer.

12.Power Lines - An outdoor antenna should be located from power lines.

openings; or, placed in a built-in installation, such

protective device. If replacement of the plug is

2. Carts and Stands - The appliance should be used only with a cart or stand that is recommended by th manufacturer.

3. An appliance and cart combination should

be moved with care. Quick

stops, excessive force, and uneven surfaces may cause the appliance

and

cart combination to overturn.

4. Wall or Ceiling Mounting - The appli-

ance

should be mounted to a wall or

its proper

should not be situated

similar surface that may block the

stoves, or other

produce heat.

connected to a

described in the operating

on the appliance.

polarization means of an

walked on or pinched

against them, paying particular

plugs, convenience receptacles, and the

they exit from the appliance.

protection. This is a

See Instruction Manual for replacement or

service technician has used a

specified by the manufacturer that has the

that its

of air

should be

heat

away

- 2 -

Safety Precautions

13.Outdoor Antenna Grounding - If an outside antenna connected to the receiver be sure the antenna

system is

grounded so as to provide some protection against voltage surges and built-up static Electrical Code, regard to

proper grounding of the mast and supporting

charges. Article 810 of the National

ANSI/NFPA 70, provides information with

structure, grounding of the lead-in wire to an antenna-dis charge unit, size of grounding conductors,location of antennadischarge unit, connection to grounding electrodes and requirements for the grounding electrode. See Figure 1.

EXAMPLE OF ANTENNA GROUNDING

GROUND CLAMP

ELECTRIC SERVICE EQUIPMENT

NEC - NATIONAL ELECTRICAL CODE

POWER SERVICE GROUNDING ELECTRODE SYSTEM (NEC ART 250 PART H)

ANTENNA LEAD IN WIRE

ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)

GROUNDING CONDUCTORS (NEC SECTION 810-21)

GROUND CLAMPS

14.Non-use Periods - The power cord of the appliance should be unplugged from the outlet when left

unused for a long period

of time.

15.Object and Liquid Entry - Care should be taken so

that objects do not fall and liquids are not spilled into the enclosure through openings.

16.Damage Requiring Service - The appliance should

serviced by qualified service personnel when: a) The power-supply cord or the plug has been b) Objects have fallen, or liquid has been spilled

damaged; or

into the appliance; or c) The appliance has been exposed to rain; or

d) The appliance does not appear to operate exhibits a marked change in

performance; or

e) The appliance has been dropped, or the

normally or

enclosure

damaged.

17.Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions.

All other servicing

should be referred to qualified service

personnel.

- 3 -

Adjustments

1. TAPE SECTION

Input Level Measurement Point

Output Level

Measurement

Point

R-CH

47 kohm

Input Point

VTVM

Scope

L-CH

47 kohm

Test Tape be used

Tape Contents Use

MTT-111N 3 KHz Tape Speed Adjustment MTT-114N 10 KHz Head Azimuth Adjustment

MTT-5511 Blank Record Frequency Property

HEAD ADJUSTMENT (AZIMUTH)

1. 10KHz test tape(example: MTT-114N) must be used for this adjustment.

2. Connect to VTVM or oscilloscope to the headphone jack or speaker terminal.

3. Press the play button.

4. Adjust the azimuth by using a screw driver to maintain the max. L&R output voltage.

5. Adjust tape A(1), tape B(2) respectively, Please secure the azimuth position by using locking paint.

RECORDING BIAS OSCILLATOR FREQUENCY ADJUSTMENT

1. Connect the frequency counter to TP603, GND.

2. Press the REC button.

3. Adjust L603 to obtain 80 KHz±100Hz

TAPE ALIGNMENT CHART

Step Item Reference Value Test Tape Adjust Point Test Point Note FIG.

Tape Speed

Adjustment

Azimuth Adjustment Recording Bias Oscilla-

tor Frequency Adjust-

ment

Normal

High

3,015~3,025Hz MTT-111N RV601

3,000~3,010Hz MTT-111N RV601

5,820~6,180Hz MTT-111N - - - - - -

Maximum Level Phase:Within90°

80 KHz± 0.5

MTT-114N Head Screw

MTT-5511 L603

Line Out L/R Channel

Shorted TP601,

TP602 Line Out L/R

Channel TP603,GND

Confirm Wow & Flutter is within 0.35%

Confirm Tape Speed of end position after adjustment at tape start position

Confirm High speed after normal speed

adjustment

Adjust with frequency counter connected.

FIG.1

FIG.2,3,4

FIG.1

Test Tape : MTT-111N(3kHz)

MTT-5511(Blank)

Set

Frequency Counter

Output Level Measurement Point

FIG. 1 : Tape Speed & Record Bias Oscillator

Frequency Adjust Circuit

L-CH

Screw Angle

Peak

R-CH Peak

within

1 dB

Output Level

L-CH

R-CH

Peak

within

1 dB

Screw Angle

FIG. 3 : Tape Azimuth Adjust Head Screw & Waveform

- 4 -

Adjust with Frequency

Counter Connected

Forward

Side

Reverse

Side

FIG. 2 : Tape Azimuth Adjust Location

(Record/Playback Head)

Test Tape MTT-114N

(10kHz)

L-CH

Set

Screen Pattern

In Phase 45 90 135 180

Good Wrong

Oscilloscope

V H

Output Level Measurement Point

FIG. 4 : Tape Azimuth Adjust Circuit & Waveform

Exploded View and Mechanical Parts List

Model No : XL-118

XL-115R

- 5 -

9CD6574300

FR-3

Exploded View and Mechanical Parts List

NO PARTS NAME PARTS CODE DESCRIPTION Q'TY REMARKS NO PARTS NAME PARTS CODE DESCRIPTION Q'TY REMARKS

1 WINDOW DOOR "A" 9CD18173A0 ACRYL 1 33 COVER SIDE "R" 9CD0410000 MIPS 1 2 WINDOW DOOR "B" 9CD18173B0 ACRYL 1 34 CHASSIS BOTTOM 9CD0607100 SECC 1 3 DOOR COVER "A" 9CD18122A0 MIPS 1 35 COVER BACK 9CD0411100 MIPS 1 4 DOOR COVER "B" 9CD18122B0 MIPS 1 36 BRKT HEAT SINK 9CD2414600 SECC 1.0T 2 5 SPRING DOOR EJECT "L" 9CD30078A0 STS 1 37 HEAT SINK N50 9CD4405800 AL 7.0T 1 6 SPRING DOOR EJECT "R" 9CD30078B0 7 DOOR FRAME "A" 9CD18113A0 ABS 1 39 BRKT HEAT SINK 9CD2414400 STS 0.3T 1 8 DOOR FRAME "B" 9CD18113B0 ABS 1 40 HOLDER AC CORD 9CD2303300 ABS 1

9 LOCKER ASS'Y 2 10 DAMPER ASS'Y 2 11 CUSHION FOOT 9CD4207700 URETHAN RUBBER 3 S1 SCREW TAPTTITE 7173261011 TT2 BIN 2.6 X 10 MFZN 15 12 BADGE DAEWOO 9CD1500900 ABS 1 S2 SCREW TAPTTITE 7173301011 TT2 BIN 3.0 X 10 MFZN 22 13 PLATE LED 9CD0911700 PVC 0.5T 1 S3 SCREW TAPTTITE 7173301212 TT2 BIN 3.0 X 12 BK 19 14 BRKT SIDE 9CD2412900 MIPS 2 S4 SCREW TAPTTITE 7173301612 TT2 BIN 4.0 X 6 MFZN 4 15 PANEL FRONT 9CD0308200 MIPS 1 S5 SCREW TAPTTITE 7173400611 TT2 BIN 3.0 X 6 MFZN 5 16 WINDOW FLT 9CD1617400 ACRYL 1 S6 SCREW WASHER 9CD3102400 TT2 BIN 3.0 X 10 + D14 1

9CD6007700 ADR-243DSW AUTO STOP S7 SCREW WASHER 9CD3102401 TT2 BIN 3.0 X 8 + D10 4

17 CASSETTE DECK 1

9CD6007800 ADR-243AMW AUTO REVERSE 18 LENS FUNCTION 9CD1617500 ACRYL 1 19 KNOB POWER 9CD1341800 MIPS 1 P1 PCB CD 20 KNOB DEMO 9CD1341700 MIPS 1 P2 PCB FRONT 9CD6583000 247X139X1.6T 1 21 KNOB UBS "L" 9CD13419L0 MIPS 1 P3 PCB MAIN 9CD6580500 319X197X1.6T 1

STS

1 38 PLATE MICA "A" 9CD0910600 MICA 2

197X123X1.6T 1

22 KNOB UBS "R" 9CD13419R0 MIPS 1 P4 PCB POWER 9CD6580600 106.5X88X1.6T 1 23 KNOB CONTROL 9CD1341600 MIPS 1 P5 PCB OPTICAL JACK 9CD6577800 29X21.5X1.6T 1 24 HOLDER VOLUME 9CD2304200 MIPS 1 25 KNOB VOLUME 9CD1342000 MIPS 1 26 GEAR VOLUME 9CD2701700 POM 1 27 SHAFT STOPPER 9CD3601800 POM 1 28 GUIDE FLT 9CD2506700 ABS 1 29 DOOR CD 9CD1812100 MIPS 1 30 CD DECK MECHA 9CD6006900 DCC-01B 1 31 COVER TOP 9CD0409600 MIPS 1 32 COVER SIDE "L" 9CD0409900 MIPS 1

- 6 -

WIRING DIAGRAM

Model No: XL-118

SN:9738832101 7P 250MM SN:9738833900 8P 300MM(W/O/POWER SAVE MODE) SN:9728804100 10P 300MM(W/POWER SAVE MODE)

CW900

50W

30W

SN : 9738835000 3P 260MM

SN : 9738804300 7P 350MM

10P CONN PINSN : 9736407800

FUNCTION

CN400

CN401

CW601

CW602

CW600

CW400

TUNER

CN900

CW508

SN:9738840900 19P 110MM

CW503CW501

CN502

CW502

CN509

CW507

CN502 SN:9738824100 2P 400MM

SN:9738840800 16P 250MM

CW704

PLAY HEAD

CW703

R/P HEAD

SN : 9736407600 13P CONN PIN

SN : 9738833700 8P 220MM

CW401

CW402

SN : 9738834000 11P 150MM

SN : 9738834100 13P 100MM

FD701

IC702

CW508

CN703CN704CN701

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