Daewoo XG-522 User manual

Service Manual
DAEWOO DAT CO., LTD.
Model:XG-52x[V][K]Series
XG-53x[V][K]Series
XW-52x[K]Series
XW-53x[K]Series
SN : 9CD8304100
JUN. 2005
XG-52x[V][K]Series XG-53x[V][K]Series
XW-53x[K]Series
XW-52x[K]Series

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SAFETY PRECAUTIONS ......................................................................................... 1
ADJUSTMENTS ........................................................................................................ 2
EXPLODEDVIEWANDPARTSLIST...................................................................... 3
WIRING DIAGRAM ................................................................................................... 4
BLOCK DIAGRAM .................................................................................................... 5
SCHEMATIC DIAGRAM ........................................................................................... 6
CD Section
MP3/VCD Section
FRONT Section
TAPE and FUNCTION Section
AMP Section
MIC Section
POWER Section
PCB PATTERN LAYOUT ...........................................................................................7
MAIN
AMP
FRONT
POWER
ELECTRICAL PART LIST .......................................................................... Appendix
TableofContents
Mini component sound system
with CD-R/RW/MP3/Video CD playback
XG-522[V]/524[V][K)/525[V][K)/526[V][K)/527[V][K)/528[V][K)
XG-532[V]/534[V][K)/535[V][K)/536[V][K)/537[V][K)//538[V][K)
Mini component sound system
with CD-R/RW playback
XW-522/524[K)/525[K)/526[K)/527[K)/528[K)
XW-532/534[K)/535[K)/536[K)/537[K)/538[K)

SafetyPrecautions
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WARNING : TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION : TO REDUCE THE RISK OF 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 CORRESPON-
DANTE 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

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SafetyPrecautions
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13.Outdoor Antenna Grounding - If an outside antenna is
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 antenna-
discharge 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 be
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
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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 L600 to obtain 80 KHz
± 500Hz
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
47 kohm
Input Level
Measurement
Point
Input Point
Output Level
Measurement
Point
TAPE ALIGNMENT CHART
Step Item Reference Value Test Tape Adjust Point Test Point Note FIG.
1Tape Speed
Adjustment
Normal
3,015~3,025Hz MTT-111N RV600 Line Out L/R
Channel
Line Out L/R
Channel
Confirm Wow & Flut-
ter is within 0.35% FIG.1
3,000~3,010Hz MTT-111N RV600 Line Out L/R
Channel
Confirm Tape Speed
of end position after
adjustment at tape
start position
FIG.1
High 5,820~6,180Hz MTT-111N - - - - - -
Confirm High speed
after normal speed
adjustment FIG.1
2Azimuth Adjustment Maximum Level
Phase:Within90∞MTT-114N Head Screw Line Out L/R
Channel FIG.2,3,4
3Recording Bias Oscillator
Frequency Adjustment 80 KHz±0.5 MTT-5511 L600 TP603,GND Adjust with frequency
counter connected. FIG.1
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
VH
Oscilloscope
L-CH
Output Level
Measurement Point
Set
Test Tape
MTT-114N
(10kHz)
Screen Pattern
In Phase 45 90 135 180
Good Wrong

ExplodedViewandMechanicalPartsList
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S1
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XG-522[V] Model Only

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OP5
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XG-525 XG-526
XG-524[V][K]/525[V][K]/526[V][K] Models Only

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OP1
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E3
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P3
P4
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S2
XW-527 / XG-527 [100W]
XG-527[V][K]/528[V][K]/XW-527[K]/528[K] Models Only

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ExplodedViewandMechanicalPartsList
NO PARTS NAME CODE NO. DESCRIPTIONS Q'TY REMARKS
1 PANEL FRONT 9CD0313700 HIPS, SPRAY 1
2 WINDOW DOOR "A" 9CD16224A0 ACRYL, SMOG 1
3 WINDOW DOOR "B" 9CD16224B0 ACRYL, SMOG 1
4 DOOR COVER "A" 9CD18151A0 HIPS, SPRAY 1
5 DOOR COVER "B" 9CD18151B0 HIPS, SPRAY 1
6 DOOR FRAME "A" 9CD18113A0 MIPS 1
7 DOOR FRAME "B" 9CD18113B0 MIPS 1
8 SRING DOOR EJECT L 9CD30080L0 STS 0.9 1
9 SRING DOOR EJECT R 9CD30080R0 STS 0.9 1
10 WINDOW CD DOOR 9CD1622500 ACRYL, SMOG 1
11 DOOR CD 9CD1815200 HIPS, SPRAY 1
12 WINDOW FLT 9CD1622300 ACRYL, SMOG 1
13-1 KNOB TUNE 9CD1354000 HIPS, SPRAY 1 XW-527/528
13-2 KNOB JOG 9CD1355100 HIPS, SPRAY 1 XG-527/528
14 KNOB VOLUME 9CD1354100 ABS, CR COATING 1
15 RING DECO VOL 9CD1006600 ACRYL, SPRAY 1
16 PANEL CONTROL 9CD0313800 HIPS, SPRAY 1
17 KNOB POWER 9CD1353600 HIPS, SPRAY 1
18 KNOB OPEN 9CD1353700 HIPS, SPRAY 1
19 KNOB FUNCTION 9CD1353500 ACRYL 1
20 KNOB CONTROL 9CD1353400 HIPS, SPRAY 1
21 BADGE BRAND ABS / AL 1
22 BRKT SIDE 9CD2412900 ABS 2
23 LOCKER AS 9CDOB014/15/16 BASE / CAM / SPRING 2
24 DAMPER GEAR AS 9CD2603200/300 DAMPER GEAR / BASE 2
25 CUSHION FOOT 9CD4207700 URETHANE D10*4.0T 2
26 CD DECK MECHA 9CD6012900 DCC-01A 1
27-1 CASSETTE DECK LOGIC 9CD6011500 1 KOMI DECK (A/S)
27-2 CASSETTE DECK LOGIC 9CD6010000 1 PIGEON DECK (A/S)
28 GUIDE FLT 9CD2506500 HIPS 1
29 COVER TOP 9CD0411400 HIPS 1
30 COVER SIDE "L" 9CD04177L0 HIPS 1
31 COVER SIDE "R" 9CD04177R0 HIPS 1
32 CHASSIS BOTTOM 9CD0611400 SECC 1
33 HEATSINK PW 9CD4409700 AL 1
34-1 HEATSINK AMP 100 9CD4410500 AL H=40mm 1 XW-527 / XG-527
34-2 HEATSINK AMP 150 9CD4410400 AL H=60mm 1 XW-528 / XG-528
35 BRKT PCB C 9CD2414500 SECC 2
36 BRKT PCB D 9CD2417800 SECC 1
37 PLATE PCB AMP 9CD0914600 PC T0.5 1
38 COVER BACK 9CD0417600 HIPS 1
OP1 COVER 3CD 9CD0417800 HIPS 1 OPTION SEMP TOSHIBA
OP2 KNOB POWER 9CD1354800 HIPS, SPRAY 1 OPTION STANDBY LED
0P3 LENS POWER 9CD1622600 ACRYL, MILKY 1 OPTION STANDBY LED
OP4 FUNCTION PLATE 9CD0913800 PC T0.15 1 OPTION FUNCTION LED
OP5 KNOB MIC 9CD1354900 HIPS, SPRAY 1 OPTION KARAOKE
NO PARTS NAME CODE NO. DESCRIPTIONS Q'TY REMARKS
S1 SCREW TAPTITE 7173261011 TT2BIN 2.6*10 MFZN 14
S2 SCREW TAPTITE 7173301011 TT2 BIN 3*10 MFZN 24
S3 SCREW TAPTITE 7173301612 TT2 BIN 3*6 MFZN 10
S4 SCREW TAPTITE 7173301212 TT2 BIN 3*12 BK 18
S5 SCREW TAPTITE 7173301612 TT2 BIN 3*16 BK 2
S6 SCREW TAPTITE 7173400611 TT2 BIN 4*6 MFZN 4
P1 PCB FRONT 9CD6596300 1
P2 PCB MAIN 9CD6598100 1
P3 PCB AMP 9CD6500600 1
P4 PCB POWER 9CD6598400 1
E1 FLT 1
E2 TUNER MODULE 1
E3 VOLTAGE SELECTOR 1
E4 AC CODE 1

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E2
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S4
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S4
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S1 S1
S1
S1
S1
S1 S1
S1
S1
S1
S1 S3
S2
S3
S3
S4
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S2
S2
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S7
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S1
S2
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S6
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S2
XW-522 Model Only

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33 E4
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27-1
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P1
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E2
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OP2 OP3
OP5
OP4
OP1
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S3 S3 S3
S5
S5
S6
S2
S2
S1
S1 S1 S1
S4
S4
S2
S2
S1
S2
S2
S1
S2
S2
S2
S2 S1 S1
S1
S1
S1
S1
S1
S1
S4
S4
S2
S4
S4
S4
S4
S4
S4
S4
S4
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S2
S4
S5
S2
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S5
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S3
XW-526
XW-525
XW-524[K]/525[K]/526[K] Models Only

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P1
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P2
E2
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P3
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E3
E4
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E1
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S2
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S3
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S2
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S2
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S5
S5 S4
S4
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S4
S4
S4
S4 S4
S4
S4
S1 S1
S1
S1
S1
S1 S1
S1
S1
S1
S1
S2
S3
S3
S4
S4
S2
S2
S4
S7
S1
S1
S2
S4
S6
S4
S4
S1
S1
S3
S2
XG VER.
XG-532[V]/XW-532 Models Only

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ExplodedViewandMechanicalPartsList
36 E4
2
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30-1
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3
9
5
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27
1
48
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6
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P1
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12 24
33
P2
E2
32
E3
40
37-1
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37-2 37-3
OP2 OP3
OP5
OP4
OP1
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23
13-1
13-2
13
S3 S3 S3
S6
S6
S7
S3
S3
S1
S1 S1 S1
S5
S5
S3
S2
S1
S2
S3
S1
S2
S2
S2
S2 S1 S1
S1
S1
S1
S1
S5
S5
S2
S5
S5
S5
S5
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S5
S5
S5
S2
S5
S6
S2
S5
S6
S5
S4 S4
S4 S4
S2
S1
S1
S1
XW/XG-536
XW/XG-534
XG VER.
XG-534[V][K]/535[V][K]/536[V][K], XW-534[K]/535[K]/536[K] Models Only

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4
5
6
7
8
1
2
3
4
5
6
7
8
99
ExplodedViewandMechanicalPartsList

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8
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99
TitleExplodedViewandMechanicalPartsList
36 E4
2
10
11
29
30-1
7
3
9
5
28 30-2
27
1
48
27
26
6
28
26
25
18
25
19 E1
35
P1
31
34
12 24
33
P2
E2
32
E3
41
37-2
39
38
OP2 OP3
OP5
OP4
OP1
14 15 16
17
20 21 22
23
13-1
13-2
13
P3
P4
40
P3 37
37-1
S7
S3
S3
S1
S1 S1 S1
S5
S5
S3
S2
S1
S2
S3
S1
S2
S2
S2
S2 S1 S1
S1
S1
S1
S1
S5
S5
S2
S5
S5
S5
S5
S5
S4
S5
S5
S5
S2
S5
S6
S2
S5
S6
S5
S4 S4
S4 S4
S2
S1
S1
S1
S2
S2
S4
S4
S3
S2
XG VER.
XW-537 / XG-537 [100W]
XG-537[V][K]/538[V][K], XW-537[K]/538[K] Models Only