DAEWOO XM 113 Service Manual

XM-111/XM-113

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

2. ADJUSTMENTS............................................................................................................... 4

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

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

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

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

6-1. AMP ................................................................................................................................................. 9

6-2. TUNER............................................................................................................................................. 10

6-3. TAPE................................................................................................................................................. 11

6-4. CD .................................................................................................................................................... 12

6-5. FRONT ............................................................................................................................................. 13

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

8. ELECTRICAL PART LIST ............................................................................................ 17

Table of Contents

MINI COMPONENT SYSTEM

XM-111/XM-113

8-1. XM-111 .................................................................................................................................................... 17

8-2. XM-113 ............................................................................................................................................ 22

Safety Precautions

WARNING

: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE

THIS APPLIANCE TO RAIN OR MOISTURE.

CAUTION :

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

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.

LASER SAFETY

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 :

USE OF ANY CONTROLS, ADJUSTMENTS, OR PROCEDURES

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

CAUTION :

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF

PLUG TO WIDE SLOT, FULLY INSERT.

ATTENTION :

POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU'AU FOND.

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

used near

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

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

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

ceiling

only as recommended by the manufacturer.

5. Ventilation - The appliance should be situated so

that its

location or position does not interfere with

its proper

ventilation. For example, the appliance

should not be situated

on a bed, sofa, rug, or

similar surface that may block the

ventilation

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

as a bookcase or cabinet that may impede the flow

of air

through the ventilation openings.

6. Heat - The appliance should be situated away from

heat

sources such as radiators, heat registers,

stoves, or other

appliances (including amplifiers) that

produce heat.

7. Power Sources - The appliance should be

connected to a

power supply only of the type

described in the operating

instructions or as marked

on the appliance.

8. Grounding or Polarization - The precautions that

should be

taken so that the grounding or

polarization means of an

appliance is not defeated.

9. Power - Cord Protection - Power-supply cords

should be

routed so that they are not likely to be

walked on or pinched

by items placed upon or

against them, paying particular

attention to cords at

plugs, convenience receptacles, and the

point where

they exit from the appliance.

10.Protective Attachment Plug - If the appliance is equipped with an attachment plug having overload

protection. This is a

safety feature.

See Instruction Manual for replacement or

resetting of

protective device. If replacement of the plug is

required, be sure the

service technician has used a

replacement plug

specified by the manufacturer that has the

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

away

from power lines.

CAUTION

RISK OF ELECTRIC SHOCKS

DO NOT OPEN

PORTABLE CART

Figure 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

charges. Article 810 of the National

Electrical Code,

ANSI/NFPA 70, provides information with

regard to

proper grounding of the mast and supporting 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.

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

damaged; or

b) Objects have fallen, or liquid has been spilled

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

d) The appliance does not appear to operate

normally or

exhibits a marked change in

performance; or

e) The appliance has been dropped, or the

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.

ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)

ANTENNA LEAD IN WIRE

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

GROUND CLAMP

ELECTRIC SERVICE EQUIPMENT

GROUNDING CONDUCTORS (NEC SECTION 810-21)

GROUND CLAMPS

EXAMPLE OF ANTENNA GROUNDING

NEC - NATIONAL ELECTRICAL CODE

Adjustments

1. TAPE SECTION

Test Tape be used

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 Contents Use

MTT-111N 3 KHz Tape Speed Adjustment MTT-114N 10 KHz Head Azimuth Adjustment MTT-5511 Blank Record Frequency Property

VTVM

Scope

R-CH

L-CH

47 kohm

Input Level Measurement Point

Input Point

Output Level

Measurement

Point

FIG. 1 : Tape Speed & Record Bias Oscillator

Frequency Adjust Circuit

Test Tape : MTT-111N(3kHz)

MTT-5511(Blank)

Frequency Counter

Output Level Measurement Point

Set

FIG. 2 : Tape Azimuth Adjust Location

(Record/Playback Head)

FIG. 3 : Tape Azimuth Adjust Head Screw & Waveform

FIG. 4 : Tape Azimuth Adjust Circuit & Waveform

Forward

Side

Reverse

Side

Adjust with Frequency

Counter Connected

L-CH Peak

R-CH

Peak Screw Angle

Output Level

within

1 dB

within

1 dB

L-CH Peak

R-CH Peak

Screw Angle

Oscilloscope

L-CH

Output Level Measurement Point

Set

Test Tape MTT-114N

(10kHz)

Screen Pattern

In Phase 45 90 135 180

Good Wrong

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

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

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

Maximum Level Phase:Within90°

Tape Speed

Adjustment

Azimuth Adjustment

Normal

Recording Bias Oscillator Frequency Adjust-

ment

80 KHz

±0.5

TAPE ALIGNMENT CHART

MTT-114N Head Screw

MTT-5511 L603

Speaker L/R Channel

TP603,GND

Confirm Wow & Flutter is within 0.35%

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

Adjust with frequency counter connected.

FIG.1

FIG.2,3,4

FIG.1

Exploded View and Mechanical Par

ts List

Model : XM-111/XM-113

Exploded View and Mechanical Parts List

Model : XM-111/XM-113

Wiring Diagram

Model : XM-111/XM-113

Block Diagram

Model : XM-111/XM-113

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