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What are the specifications of the DAEWOO ACD-4300?
Cassette Deck
| Cassette tape used | Normal: C-30~C-90 |
| Tape speed | 4.8 cm/sec. |
| Track system | Four-track two-channel stereo |
| Recording system | AC bias |
| Erasing system | Magnet erasing |
Compact Disc Player
| Type | Compact disc player with optical pickup |
| Quantization | 16-bit linear |
| Channels | Two channels (stereo) |
| Frequency response | 20 Hz to 18 kHz |
| Total harmonic distortion | 0.1% (1 kHz) |
| Wow and flutter | Below measurable limit |
| Pickup | Semiconductor laser pickup |
Tuner
| Receiving frequency | FM: 76 MHz to 108MHz MW: 515 kHz to 1650 KHz FM: 87.5-108MHz, 76-108MHz (JAPAN) MW: 530-1630kHz (530-1720kHz U.S.A) LW: 145-285 kHz SW: 6-18 MHz SW1: 2.3-7.5 MHz SW2: 7-22 MHz |
| Intermediate frequency | FM: 10.7 MHz AM: 455 kHz |
| Antenna | FM, SW: Telescopic antenna LW, MW: Ferrite-core antenna |
General
| Speakers | 4 inch x 2 |
| Terminals | PHONES jack × 1 MIC jack × 1 CD OUT jack × 1 |
| Power supply | AC 100, 50/60Hz (JAPAN) 120V 60Hz (USA) 220V 50Hz (EUROPE) 240V 50Hz, 110/220V 50/60Hz DC 12V 1EC R20 (“D” cell) x 8 |
| Power consumption | 23W |
| Dimensions (W×H×D) | 653 × 208 × 230mm |
| Weight | 5.1kg (without batteries) |
What are the controls and functions of the DAEWOO ACD-4300?
1. Balance control
2. Volume control
3. Function selector switch
4. MIC jack
5. Headphone jack
6. Handle
7. CD compartment
8. FM ANT
9. FM MODE button, BEAT CUT
10. Band selector switch
11. Tuning control
12. Dial scale
13. CD open button
14. G-EQ control (3 Band)
15. Repeat button (CD)
16. Power LED
17. Stereo LED
18. Forward LED (TAPE) – AUTO REVERSE
19. Reverse LED (TAPE) – AUTO REVERSE
20. Memory button (CD)
21. CD stop button
22. LCD display (CD)
23. CD play/pause button
24. CD SKIP/search FR button
25. CD Shuffle button
26. CD space button
27. CD display button
28. CD SKIP/search FF button
29. R CH speaker
30. A deck compartment
31. A deck control button mode: Auto Reverse (MODE, PLAY, REW, FF, STOP, PROG), Auto Stop (PLAY, REW, FF, ST/EJ, PAUSE)
32. B deck control button (REC, PLAY, REW, FF, STOP/EJECT, PAUSE)
33. B deck compartment
34. L CH speaker
35. CD output jack
36. Battery compartment
37. Voltage select switch (DUAL VOLTAGE)
38. AC socket
How do I disassemble the cabinet of the DAEWOO ACD-4300?
BACK CABINET REMOVAL
1. Remove seven screws A (TT2 BIN 3 × 25) in the back cabinet.
2. The back cabinet to front cabinet will be removed.
3. Remove the connectors.
TOP CABINET REMOVAL
1. Remove two screws B (TT2 BIN 3 × 10 BK) in the back cabinet.
2. Remove the connectors.
3. The top cabinet will be removed.
How do I perform a tape speed adjustment on the DAEWOO ACD-4300?
You will need a Test Tape MTT-111.
1. PRELIMINARY WORK
1-1. Push the power switch ON.
1-2. Place the function switch in TAPE position.
1-3. Connect the output from the headphone jack to the frequency counter.
1-4. Load the decks TAPE A and B with MTT-111s. (Use A side only.)
2. ADJUSTMENT PROCEDURES (Adjust in the steps below)
2-1. Press the play button of TAPE A and adjust RV601 to obtain 3020 Hz ± 10 Hz.
2-2. Press the play button of TAPE B and adjust RV601 for the frequency counter to read within 3000 Hz ~ 3020 Hz.
2-3. After adjustment is completed, stop the deck.
2-4. Place the Dubbing switch in High speed position.
2-5. Press the PLAY button to TAPE A.
2-6. Press the REC button to TAPE B.
2-7. Be sure to obtain 6000 Hz ~ 6100 Hz.
CAUTION
1. The test should be performed with the test tapes wound at the same position (diameter).
2. Proceed with the adjustments with the set positioned vertically. If not, tape speed will be lower.
3. A stabilized power source of DC 12V should be used.
How do I adjust the record/playback head on the DAEWOO ACD-4300?
An 8 kHz test tape must be used for this adjustment.
Connect a VTVM or an oscilloscope to the headphone jack or speaker terminal and adjust the azimuth by using a screwdriver to maintain the maximum output voltage.
How do I perform a radio tuner adjustment on the DAEWOO ACD-4300?
TEST EQUIPMENT REQUIRED
1. Signal generator with a frequency range of at least from 450 kHz to 23 MHz AM.
2. Oscilloscope with a side amplifier of approximately 100 kHz.
3. Test loop-a coil of any size wire, one turn or more. (MW, LW)
4. A 30 ohm dummy antenna.
5. VTVM.
AM ALIGNMENT PROCEDURE
1. Turn on the AM signal generator and the VTVM allowing a fifteen-minute warm-up period.
2. Using the test loop across the output of the signal generator, inductively connect the signal generator to the radio.
3. Connect the VTVM across the headphone jack.
4. Set the signal generator frequency as listed in the alignment chart and maintain a sufficient output level to provide an indication on the VTVM.
Note:
1. Use a screwdriver with a plastic grip for all adjustments.
2. Standard test frequency is 400 Hz and modulation 30% for AM.
3. Standard test frequency is 400 Hz and deviation 22.5 kHz for FM.
What is the MW alignment procedure for the DAEWOO ACD-4300?
| Band | Step | Signal Generator Frequency | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|---|
| IF | 1 | 455kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | T102 T104 |
Adjust for maximum indication |
| MW | 2 | 515kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | Osc. Coil L031 |
Adjust for maximum indication. |
| 3 | 1650kHz | Tuning Gang Fully Clockwise (Highest Frequency) | Osc. Trim. VC101 (C1) (TC032) |
Adjust for maximum indication | |
| 4 | Repeat steps 2 and 3 as required | ||||
| 5 | 600kHz | Tune to Signal | Ant. Coil L101 |
Adjust for maximum indication. | |
| 6 | 1400kHz | Tune to Signal. | Ant. Trim. VC101 (C2) (NO Adjust) |
Adjust for maximum indication. | |
| 7 | Repeat steps 5 and 6 as required. | ||||
What is the FM-IF alignment procedure for the DAEWOO ACD-4300?
1. Set the select switch to the FM position.
2. Turn on both the sweep generator and oscilloscope, and allow a fifteen-minute warm-up period.
| Step | Signal Generator Frequency | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|
| 1 | 10.7MHz | Tuning Gang Fully Counter Clockwise (Lowest Frequency) | T101 T103 |
Adjust for maximum indication |
What is the FM-RF alignment procedure for the DAEWOO ACD-4300?
1. Turn on the signal generator and the VTVM, and allow a fifteen-minute warm-up period.
2. Connect the signal generator output through a 75 ohm dummy antenna across FM ANT.
3. Connect the VTVM across the voice coil or the phones jack.
4. Set the volume control to mid-position.
5. Adjust the signal generator frequency as indicated in the FM-RF ALIGNMENT CHART, and maintain a sufficient signal output level to provide a measurable indication.
6. Proceed as outlined in the FM-RF ALIGNMENT CHART.
| Step | Signal Generator | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|
| 1 | 87.35MHz (76) | Tuning Gang Fully counter-clockwise (Lowest Frequency) | Osc. Coil L103 | Adjust for maximum output indication |
| 2 | 108.3MHz (108) | Tuning Gang Fully Counter-clockwise (Highest Frequency) | Osc. Trim. VC101 (FC2) | Adjust for maximum output indication. |
| 3 | Repeat steps 1 and 2 as required. | |||
| 4 | 90 (80) MHz | Tune to signal. | Ant. Coil L102 | Adjust for maximum output indication. |
| 5 | 106 (140) MHz | Ant. Trim. | ||
| 6 | Repeat steps 4 and 5 as required. | |||
| * ( ) Japan Band Adjust. | ||||
How do I perform a free run frequency alignment on the DAEWOO ACD-4300?
Adjust RV101 under no signal condition so as to obtain 38 KHz + 75 Hz.
What is the LW alignment procedure for the DAEWOO ACD-4300?
| Band | Step | Signal Generator Frequency | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|---|
| IF | 1 | 455kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | T102 T104 |
Adjust for maximum indication |
| LW | 2 | 142kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | Osc. Coil L012 |
Adjust for maximum indication. |
| 3 | 283kHz | Tuning Gang Fully Clockwise (Highest Frequency) | Osc. Trim. VC101 (C1) (TC012) |
Adjust for maximum indication | |
| 4 | Repeat steps 2 and 3 as required | ||||
| 5 | 160kHz | Tune to Signal | Ant. Coil L101 |
Adjust for maximum indication. | |
| 6 | 260kHz | Tune to Signal. | Ant. Trim. VC101 (C2) (NO Adjust) |
Adjust for maximum indication. | |
| 7 | Repeat steps 5 and 6 as required. | ||||
What is the SW2 alignment procedure for the DAEWOO ACD-4300?
| Band | Step | Signal Generator Frequency | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|---|
| IF | 1 | 455kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | T102 T104 |
Adjust for maximum indication |
| SW2 | 2 | 7.35MHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | Osc. Coil L012 |
Adjust for maximum indication. |
| 3 | 22.5MHz | Tuning Gang Fully Clockwise (Highest Frequency) | VC101 (C1) | Adjust for maximum indication | |
| 4 | Repeat steps 2 and 3 as required | ||||
| 5 | 9MHz | Tune to Signal | Ant. Coil L021 |
Adjust for maximum indication. | |
| 6 | 20MHz | Tune to Signal. | VC101 (C2) | Adjust for maximum indication. | |
| 7 | Repeat steps 5 and 6 as required. | ||||
What is the SW alignment procedure for the DAEWOO ACD-4300?
| Band | Step | Signal Generator Frequency | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|---|
| IF | 1 | 455kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | T102 T104 |
Adjust for maximum indication |
| SW | 2 | 5.7MHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | Osc. Coil L022 |
Adjust for maximum indication. |
| 3 | 1.7kHz | Tuning Gang Fully Clockwise (Highest Frequency) | VC101 (C1) | Adjust for maximum indication | |
| 4 | Repeat steps 2 and 3 as required | ||||
| 5 | 6.5MHz | Tune to Signal | Ant. Coil L021 |
Adjust for maximum indication. | |
| 6 | 14MHz | Tune to Signal. | VC101 (C2) | Adjust for maximum indication. | |
| 7 | Repeat steps 5 and 6 as required. | ||||
What is the SW1 alignment procedure for the DAEWOO ACD-4300?
| Band | Step | Signal Generator Frequency | Radio Dial Setting | Adjustment | Remarks |
|---|---|---|---|---|---|
| IF | 1 | 455kHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | T102 T104 |
Adjust for maximum indication |
| SW1 | 2 | 2.25MHz | Tuning Gang Fully Counter-clockwise (Lowest Frequency) | Osc. Coil L012 |
Adjust for maximum indication. |
| 3 | 7.7MHz | Tuning Gang Fully Clockwise (Highest Frequency) | Osc. Trim. VC101 (C1) (TC012) |
Adjust for maximum indication | |
| 4 | Repeat steps 2 and 3 as required | ||||
| 5 | 3MHz | Tune to Signal | Ant. Coil L101 |
Adjust for maximum indication. | |
| 6 | 260kHz | Tune to Signal. | Ant. Trim. L001 (NO ADJUST) |
Adjust for maximum indication. | |
What are the tape alignment check values for the DAEWOO ACD-4300?
| Item | Reference Value | Tape | Adjustment Point | Test Point | Note | |
|---|---|---|---|---|---|---|
| 1 | Tape Speed Adjustment DECK A, Standard Speed | 3000 ± 30 Hz | ATT-111 | DECK A, RV201 | SP-OUT | Adjust with frequency counter connected. |
| 2 | Bias Oscillator Frequency Adjustment | 80kHz ± 0.5 | AC-212 | DECK B, L602 | R808 GND | Mode switch: OFF. Adjust with frequency counter connected. |
What are the preliminary checks before adjusting the CD section of the DAEWOO ACD-4300?
1. Checking point before adjustment.
1) ‘Laser on’ checking. (without disc)
2) ‘Focus search’ checking. (without disc)
2. Adjustment mode set.
1) Set all of the adjustment volume to center position.
2) Use SRCD-4-002 disc (or YEDS-18) unless otherwise indicated.
3) Perform adjustment in the order given.
How do I perform a PLL adjustment on the CD section of the DAEWOO ACD-4300?
(1) Connect the frequency counter with TPO2 and the ground of the frequency counter with TPO3.
(2) Stop mode (CD).
(3) Adjust RV705 so that the frequency counter is 5.15MHz ± 50KHz.
How do I perform a focus offset adjustment on the CD section of the DAEWOO ACD-4300?
(1) Connect the oscilloscope (more than 40MHz) with TPO1 and the ground of the oscilloscope with TP04.
(2) Insert a disc and playback CD.
(3) Adjust RV701 so that the RF signal becomes maximum and a definite waveform (0.2V/DIV, 0.5µsec/DIV, AC).
How do I perform a tracking balance adjustment on the CD section of the DAEWOO ACD-4300?
(1) Connect the oscilloscope with TP06 and the ground of the oscilloscope with TP04 (0.5V/DIV, 5msec/DIV, DC).
(2) Insert a disc and playback CD.
(3) Turn the volume of RV703 to counterclockwise.
(4) Adjust RV704 so that the waveform is symmetrical above and below the 0 volt line (A = B).
(5) Return RV703 to the center position.
How do I perform a focus gain adjustment on the CD section of the DAEWOO ACD-4300?
(1) Connect the oscilloscope with TP05 and the ground of the oscilloscope with TP04.
(2) Insert a disc and playback CD.
(3) Adjust RV702 so that the center of the waveform meets at the 100mV line for a Normal waveform.
How do I perform a tracking gain adjustment on the CD section of the DAEWOO ACD-4300?
(1) Connect the oscilloscope with TP06 and the ground of the oscilloscope with TP04.
(2) Insert a disc and playback CD.
(3) Adjust RV703 so that the waveform becomes the normal waveform.
How to use the PDF below:
* Touchscreen: Swipe up/down with-in the PDF to scroll and pinch or spread with two fingers to zoom.
* Mouse: While your mouse is hovering over the PDF, use the mouse wheel to scroll and click on the – / + buttons at the bottom of the PDF to zoom.
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