DAEWOO AKR-0106A, AKR-1010RC, ACR-1010RC, AKR-1010RDS, AKR-1010C Service Manual

...

1010 Series

AKR-1010RC ACR-1010RC AKR-1010RDS AKR-1010C AKR-1010

Service Manual

Car Audio

S/M No : AKR0108EF0

DAEWOO ELECTRONICS CO., LTD

http://svc.dwe.co.kr Mar. 2001

4-Channel high Power (40W x 4Ch) Electronic Tuning Electronic Volume/Bass/Treble/Balance/Fader Control 42 Memory Capability (18FM+12MW+12LW) Local/DX Switch Loudness Control Mechanical cassette Player Detachable Face for Anti-Theft 10 CD-changer control (option)

MODEL : AKR-0108 Series

0106 Series

AKR-0106A

TABLE OF CONTENTS

1. PRODUCT SPECIFICATIONS ..................................................1

2. LINE DRAWING ........................................................................2

3. EMERGENCY TROUBLE SHOOT ............................................3

4. ADJUSTMENTS ........................................................................6

5. SCHEMATIC DIAGRAM ..........................................................10

6. PARTS LOCATION ON P.C.BOARD ......................................11

7. OVERALL EXPLODED VIEW & PARTS LIST .......................14

8. DECK MECHANISM EXPLODED VIEW & PARTS LIST .......15

9. PARTS LIST ............................................................................18

10. FUNCTION OF MICOM IC .....................................................22

11. IC BLOCK DIAGRAM .............................................................28

12. WIRING DIAGRAM ...............................................................32

13. LIQUID CRYSTAL DISPLAY ..................................................33

14. OUTPUT CONNECTION DESCRIPTIONS ............................34

1. PRODUCT SPECIFICATIONS

AUDIO SECTION

Maximum output power : 40watts per channel into 4 ohms. Load impedance : 4 ohms or 8 ohms Total harmonic distortion : Less than 10% at 12 watts Frequency response : 100Hz( +3dB), 10kHz(-5 +3dB) Control Bass/Treble : 10 +3dB at 100Hz/10kHz

TAPE SECTION

Track format : 2-track / 2-channel system Tape speed : 4.75cm/sec Wow / Flutter : 0.35%max. (WRMS) Frequency response : 63Hz ~ 10kHz (+3dB) normal (LH)tape Signal to noise ratio : 50dB Channel separation : 35dB

TUNER SECTION

(FM) Tuning range : 87.5 to 108MHz

Sensitivity : 12dBuV Stereo separation : 30dB Signal to noise ratio

55dB Frequency range : 87.5 ~ 108MHzII Channel space : 50KHz at Europe

(MW) Tuning range : 522 to 1620kHz at Europe

(530 to 1710KHz at U.S.A) Sensitivity : 30dBuV Signal to noise ratio

50dB Frequency range : 522 ~ 1620KHz Channel space : 9KHz

(LW) Tuning range : 144 to 288KHz

Usable Sensitivity : 40dBuV

GENERAL

Power requirements : DC 13.8V (10.8 ~15.6V allowable)

Negative ground Spdaker impedance : 4 or 8 ohm Output power : Maximum 40Wx4Ch. Current consumption : 10A

Dimension (W x H x D) : 178 x 50 x 156 mm Chassis size : 195 x 64 x 14.6 mm

Weight(Net) : 1.75Kg

Design and specifications are subject to changes for improvements without notice.

2. LINE DRAWING

2-1. FRONT SIDE

2-2. REAR SIDE

AKR-1010RC

- RDS Function

- 4-Channel high Power (40W x 4Ch)

- Electronic Tuning

- Electronic Volume /Bass /Treble /Balance /Fader Control

- 42 Memory Capability (18FM+12MW+12LW)

- Local/DX Switch

- Loudness Control

- Mechanical cassette Player

- Detachable Face for Anti-Theft

- 10 CD-changer control

AKR-1010C AKR-0106A

- Basic Function

- 4-Channel high Power (40W x 4Ch)

- Electronic Tuning

- Electronic Volume /Bass /Treble /Balance /Fader Control

- 42 Memory Capability

(18FM+12MW+12LW)

- Local/DX Switch

- Loudness Control

- Mechanical cassette Player

- Detachable Face for Anti-Theft

- 10 CD-changer control

3. EMERGENCY TROUBLE SHOOT

3-1. General Function

No sound from speakers

Yes

Output connector is missing

Output connector is inferior goods

Put exactly output connector in.

Change output connector to superior goods

Yes

Power IC, Output Socket is inferior goods

Change Power IC, Output Socket to superior goods

Yes

L.C.D or Lamp is not turned off.

Yes

Power is not supplied

Return to

Output voltage of power IC is little.

Change Regulator IC and check output voltage.

Yes

LCD or Lamp is inferior goods.

Change LCD or Lamp to superior goods.

Yes

Different each channel have output level (Front, Rear, Left, Right)

Treble or Bass is low unusually

Yes

Balance of front and rear is in one side

Balance of Left, Right is in one side.

Re-adjust Balance of front, rear

Ref.

Balance = Center Front / Rear

Ref.

Balance = Center Left / Right

Ref.

Balance = Center Treble / Bass

Ref.

Regulator IC output Voltage = V

Ref.

Electrical Parts List L.C.D., Lamp

Re-adjust Balance of Left, Right

Yes

Balance of Treble or Bass is in one side.

Re-adjust Balance of Treble or Bass

Yes

EMERGENCY TROUBLE SHOOT

3-2. Tuner Function

Hearing noise only

Yes

No selected the station

Tuner Module is inferior goods.

Select exactly broadcasting frequency.

Change tuner module to superior goods.

Yes

Weak frequency area caused by elevations

Change to goods of R.D.S function.

Yes

Station in other regions are not held.

Yes Yes

No selected the local stations.

Return to or

Extreme noise in broadcast

Weak separation of FM stereo

Yes

Antenna connector is missing

Put exactly antenna connector in his jack

Ref.

CAT-7 Electrical Parts List

Function of autoswitch noise reduction

Ref.

Yes

Weak frequency area of FM, MW

Switch automatically to mono mode in weak frequency area

Yes

In case of located Glass Antenna, check if heat wire is cut or not in rear window.

Check Antenna connector part.

EMERGENCY TROUBLE SHOOT

3-3. Tape Function

No sound from speakers

Yes

Tape is inferior goods

No signal play output

Use only superior goods

Put exactly deck output connector in.

Yes

Deck Mechanism is inferior goods.

Change Deck Mechanism to superior goods.

Yes

Sound is low or not clear

Yes Yes

Head is dirty

Return to

Clean head or pinch roller with cleaner

Tape is not inserted into the slot.

Yes

Tape was inserted right side left.

Tape is ejected after being inserted.

Insert recording part to right side.

Ref.

Tape Deck Macha ADC-2385

Ref.

Tape is cut or extended

Yes

ADJUSTMENTS

4-1. TUNER MODULE ADJUSTMENT LOCATIONS

CAT-7 (3 Band)

CAT-6 (2 Band)

ADJUSTMENTS

4-2. MW / LW ADJUSTMENT METHOD

STEP

Band Covering

Range

522 KHz

603 KHz

V.T point of

AM Board

Output

522 KHz

450 KHz

603 KHz

AMOSC

MAXIMUM

1620 KHz

1620 KHz -

7.6V

MAXIMUM

AMIF

AMRF1 AMRF2

1404 KHz

Output

1404 KHz

MAXIMUM

AMRF1 AMRF2

TRACKING

ALIGNMENT

TUNING

TEST

POSITION

SSG

FREQUENCY

ALIGNMENT

INDICATOR

Band Covering

Range

144 KHz

LWOSC

MAXIMUM

TRACKING

220 KHz

Output

220 KHz

LMRF1 LMRF2

MAXIMUM

ADJUSTMENTS

4-3. FM ADJUSTMENT METHOD

STEP

1 IF adjust

MPX IC

Separation

Control

98.1 MHz, ANT input 60dBu, 1kHz (30% MOD) FM SSG

ANT jack and GND

98.1 MHz, ANT input 40dBu, 1kHz (L+R=45%

L-R=45%

PILOT=10% MOD)

The voltage

between CW03

L or R CH SP.

output wire

VTVM and Scope

FM DET

BLEND

Adjust for 0V

0.05V

L, R separation 8dB

SUBJECT

FEED SIGNAL

FROM

MEASURE

OUTPUT

ADJUST

POINT

ADJUSTMENT

ADJUSTMENTS

4-4. TAPE ADJUSTMENT METHOD

NOTE : 1. Clean the playback head before adjustment

2. Prepare the test tape MTT-114 or equivalent

3. Balance, Fader, Bass & Treble ....Center position. Volume adjusted to 2Volts.

STEP

Head azimuth

adjustment

Tape Speed

MTT-114N

or equivalent

MTT-114N

or equivalent

Speaker

Output

Speaker

Output

Head azimuth

adjustment screw

(Fig. 1)

Turn the azimuth screw to obtain maximum level

Adjust for 30103020Hz

Tape Speed

adjustment

(Fig. 1)

DESCRIPTION

TEST TAPE

TEST

POINT

ADJUSTMENT

POINT

ADJUSTMENT

Note

: dBu uV dBu

uV 17 5.0 33 44.6 16 6.31 35 56.2 30 31.6 45 178

NOTE : Antenna signal is used.

1. For Signal Generator with readings in EMF(Open type) add 12dB (6dB for the “Dummy” and 6dB for EMF-reading).

2. For Signal Generator with reading in dBm add 6 dB for “Dummy”

[ Fig. 1 ]

5. SCHEMATIC DIAGRAMS

for AKR-1010 & AKR-0106 Series

OPTION

RDS Function CDC Function

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