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- AMI-208MC
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Daewoo AMI-208MC Service Manual - page 6
5
ADJUSTMENTS
E-F BALANCE ADJUSTMENT
1. Connect oscilloscope to test point TP502 and TP503
on CD PCB.
2. Press power switch on.
3. Put test disc(TCD-781) in and press play button then
pause button.
4. Pressing Fast Forward button, adjust RV502 to get
that the oscilloscope waveform is symmetrical on the
bottom in relation to 0V, and check this level.
* Design and specifications may be subject to change without notice.
3. 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
Traverse Waveform
A
B
0V
VTVM
Scope
R-CH
L-CH
47 kohm
47 kohm
Input Level
Measurement
Point
Input Point
Output Level
Measurement
Point
Summary of AMI-208MC
Page 1
Service manual mini component system model : daewoo electronics co., ltd. Ami-208mc/208mcj ami-308mc/308mce ami-508mc ami-211mc ami-311mc ami-511mc.
Page 2: Table of Contents
1 table of contents safety precautions ................................................................................................. 2 adjustments ............................................................................................................. 4 exploded view and parts list ...........
Page 3: Safety Precautions
2 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...
Page 4
3 safety precautions 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 infor...
Page 5: Adjustments
4 adjustments 1. Tuner section test equipment 1. Signal generator with a frequency range of fm broadcast. 2. Oscilloscope with a side amplifier of approximately 100 khz. 3. Fm 75/50 Ω dummy antenna. 4. Vtvm fm alignment 1. Turn on the fm signal generator and the vtvm allowing 15 minutes warming-up p...
Page 6
5 adjustments e-f balance adjustment 1. Connect oscilloscope to test point tp502 and tp503 on cd pcb. 2. Press power switch on. 3. Put test disc(tcd-781) in and press play button then pause button. 4. Pressing fast forward button, adjust rv502 to get that the oscilloscope waveform is symmetrical on ...
Page 7
6 adjustments tape alignment chart step item reference value test tape adjust point test point note fig. 1 tape speed adjustment normal 3,015~3,025hz mtt-111n rv601 line out l/r channel confirm wow & flut- ter is within 0.35% fig.1 3,000~3,010hz mtt-111n rv601 line out l/r channel confirm tape speed...
Page 8
7 exploded view and parts list 1. Ami-208mc / 308mc / 508mc.
Page 9
8 exploded view and parts list no. Part name code no. Description 208mc 308mc 508mc 1 window door a 9cd1612500 acryl smog 1 1 1 2 window door b 9cd1612600 acryl smog 1 1 1 3 door cass a 9cd1808500 mips 1 1 1 4 door cass b 9cd1808600 mips 1 1 1 5 spring door eject 9cd3004500 pw-1 2 2 2 6 spring c hol...
Page 10
9 exploded view and parts list 2. Ami-211mc / 311mc / 511mc.
Page 11
10 exploded view and parts list no parts name parts code description q'ty 211mc 311mc 511mc 1 panel front 9cd0305400 mips 1 1 1 2 door cass. A/b 9cd1808900 mips 1 1 1 9cd1809000 mips 1 1 1 3 spring door eject 9cd3004500 pw-1 1 1 1 4 spring c hold 9cd3003900 sts t0.2 1 1 1 5 damper as 9cd2602800 da-1...
Page 12
11 wiring diagram ami-208mc / 308mc / 508mc / 211mc / 311mc / 511mc.
Page 13
12 block diagram ami-208mc / 308mc / 508mc / 211mc / 311mc / 511mc.
Page 14
13 schematic diagram 1. Power / amp ami-208mc / 211mc.
Page 15
14 schematic diagram ami-208mcj.
Page 16
15 schematic diagram ami-308mc / 311mc.
Page 17
16 schematic diagram ami-508mc / 511mc.
Page 18
17 schematic diagram 2. Cd ami-208mc / 308mc / 508mc / 211mc / 311mc / 511mc.
Page 19
18 schematic diagram 3. Tuner (2band) ami-208mc / 308mc / 508mc / 211mc / 311mc / 511mc.
Page 20
19 schematic diagram 4. Tape ami-208mc / 308mc / 508mc / 211mc / 311mc / 511mc.
Page 21
20 schematic diagram 5. Control ami-208mc / 211mc.
Page 22
21 schematic diagram ami-308mc / 508mc / 311mc / 511mc.
Page 23
22 pcb pattern layout power / amp / tuner / tape.
Page 24
23 pcb pattern layout cd control.
Page 25: Electrical Parts List
24 1. 208mc parts name parts code q'ty discription location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant am loop 9cd6810200 1 loop-7 at101 ant fm 9716805900 1 1.5m pig tail blk at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 cc...
Page 26
25 conn as 9738835000 1 ul 2851 #28x2c0 3p 260mm cn603 cw603 conn as 9738835200 1 ul 2851 #28x3c0 5p 230mm cn602 cw602 conn as 9738835300 1 ul 1007 #26 1p 110mm w002 conn as 9738835400 1 ul 1007 #26 1p 260mm w003 conn as 9738840800 1 ffc 16p p1.0x250mm r cn501 conn as 9738840900 1 ffc 19p p1.25x110m...
Page 27
26 r carbon film rd-az183j- 5 1/6 18k ohm j r201 r203 r526 r813 r814 r carbon film rd-az184j- 7 1/6 180k ohm j r504 r623 r625 r626 r637 r638 r651 r carbon film rd-az220j- 2 1/6 22 ohm j jw117 r534 r carbon film rd-az221j- 3 1/6 220 ohm j r552 r933 r934 r carbon film rd-az222j- 7 1/6 2.2k ohm j r211 ...
Page 28
27 2. 208mcj parts name parts code q'ty discription location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant am loop 9cd6810200 1 loop-7 at101 ant fm 9716805900 1 1.5m pig tail blk at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 c...
Page 29
28 conn as 9738835000 1 ul 2851 #28x2c0 3p 260mm cn603 cw603 conn as 9738835200 1 ul 2851 #28x3c0 5p 230mm cn602 cw602 conn as 9738835300 1 ul 1007 #26 1p 110mm w002 conn as 9738835400 1 ul 1007 #26 1p 260mm w003 conn as 9738840800 1 ffc 16p p1.0x250mm r cn501 conn as 9738840900 1 ffc 19p p1.25x110m...
Page 30
29 r carbon film rd-az183j- 5 1/6 18k ohm j r201 r203 r526 r813 r814 r carbon film rd-az184j- 7 1/6 180k ohm j r504 r623 r625 r626 r637 r638 r651 r carbon film rd-az220j- 2 1/6 22 ohm j jw117 r534 r carbon film rd-az221j- 4 1/6 220 ohm j r003 r552 r933 r934 r carbon film rd-az222j- 7 1/6 2.2k ohm j ...
Page 31
30 3. 308mc parts name parts code q'ty discription location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant am loop 9cd6810200 1 loop-7 at101 ant fm 9716805900 1 1.5m pig tail blk at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 cc...
Page 32
31 conn as 9738835000 1 ul 2851 #28x2c0 3p 260mm cn603 cw603 conn as 9738835200 1 ul 2851 #28x3c0 5p 230mm cn602 cw602 conn as 9738835300 1 ul 1007 #26 1p 110mm w002 conn as 9738835400 1 ul 1007 #26 1p 260mm w003 conn as 9738835500 1 ul 1007 #26 2p 220mm cn704 cn704 conn as 9738840800 1 ffc 16p p1.0...
Page 33
32 r carbon film rd-az183j- 5 1/6 18k ohm j r201 r203 r526 r813 r814 r carbon film rd-az184j- 7 1/6 180k ohm j r504 r623 r625 r626 r637 r638 r651 r carbon film rd-az220j- 2 1/6 22 ohm j jw117 r534 r carbon film rd-az221j- 3 1/6 220 ohm j r552 r933 r934 r carbon film rd-az222j- 7 1/6 2.2k ohm j r211 ...
Page 34
33 4. 308mce parts name parts code discription q'ty location am rf unit 5lr0000826 rbw07vb-k5020 1 l101 ant am loop 9cd6810200 loop-7 1 at101 ant fm 9716805900 1.5m pig tail blk 1 at001 c cera ccxb1h101k 50v b 100pf k (tapping) 1 cc203 c cera ccxb1h102k 50v b 1000pf k (tapping) 6 cc001 cc253 cc254 c...
Page 35
34 conn as 9738834900 ul 2468 #26 4p+3p+2p 360 1 cn601 cw601 conn as 9738835000 ul 2851 #28x2c0 3p 260mm 1 cn603 cw603 conn as 9738835200 ul 2851 #28x3c0 5p 230mm 1 cn602 cw602 conn as 9738835300 ul 1007 #26 1p 110mm 1 w002 conn as 9738835400 ul 1007 #26 1p 260mm 1 w003 conn as 9738835500 ul 1007 #2...
Page 36
35 r carbon film rd-az153j- 1/6 15k ohm j 9 r403 r404 r411 r412 r515 r553 r554 r643 r644 r carbon film rd-az154j- 1/6 150k ohm j 3 r503 r525 r821 r carbon film rd-az181j- 1/6 180 ohm j 3 r737 r746 r754 r carbon film rd-az182j- 1/6 1.8k ohm j 2 r413 r414 r carbon film rd-az183j- 1/6 18k ohm j 5 r201 ...
Page 37
36 5. 508mc parts name parts code q'ty discription location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant fm 9716805900 1 1.5m pig tail blk at001 antenna fm 9736806000 1 2m t-ant at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 c...
Page 38
37 conn as 9738832100 1 7p 200 p=2.5 boardin cn509 cw504 conn as 9738833900 1 #22 8p board-in 300mm cn901 cw901 conn as 9738834700 1 ul 1007 #26 1p 110mm w001 conn as 9738834900 1 ul 2468 #26 4p+3p+2p 360 cn601 cw601 conn as 9738835000 1 ul 2851 #28x2c0 3p 260mm cn603 cw603 conn as 9738835200 1 ul 2...
Page 39
38 r carbon film rd-az124j- 1 1/6 120k ohm j r513 r carbon film rd-az151j- 5 1/6 150 ohm j r627 r628 r738 r747 r755 r carbon film rd-az152j- 3 1/6 1.5k ohm j r740 r749 r757 r carbon film rd-az153j- 9 1/6 15k ohm j r403 r404 r411 r412 r515 r553 r554 r643 r644 r carbon film rd-az154j- 3 1/6 150k ohm j...
Page 40
39 6. 211mc parts name parts code qt’y description location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant am loop 9cd6810200 1 loop-7 at101 ant fm 9716805900 1 1.5m pig tail blk at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 cc...
Page 41
40 conn as 9738835000 1 ul 2851 #28x2c0 3p 260mm cn603 cw603 conn as 9738835200 1 ul 2851 #28x3c0 5p 230mm cn602 cw602 conn as 9738835300 1 ul 1007 #26 1p 110mm w002 conn as 9738835400 1 ul 1007 #26 1p 260mm w003 conn as 9738840800 1 ffc 16p p1.0x250mm r cn501 conn as 9738840900 1 ffc 19p p1.25x110m...
Page 42
41 r carbon film rd-az183j- 5 1/6 18k ohm j r201 r203 r526 r813 r814 r carbon film rd-az184j- 7 1/6 180k ohm j r504 r623 r625 r626 r637 r638 r651 r carbon film rd-az220j- 2 1/6 22 ohm j jw117 r534 r carbon film rd-az221j- 3 1/6 220 ohm j r552 r933 r934 r carbon film rd-az222j- 7 1/6 2.2k ohm j r211 ...
Page 43
42 7. 311mc parts name parts code qt’y description location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant am loop 9cd6810200 1 loop-7 at101 ant fm 9716805900 1 1.5m pig tail blk at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 cc...
Page 44
43 conn as 9738832100 1 7p 200 p=2.5 boardin cn509 cw504 conn as 9738833900 1 #22 8p board-in 300mm cn901 cw901 conn as 9738834900 1 ul 2468 #26 4p+3p+2p 360 cw601 conn as 9738835000 1 ul 2851 #28x2c0 3p 260mm cw603 conn as 9738835200 1 ul 2851 #28x3c0 5p 230mm cw602 conn as 9738835500 1 ul 1007 #26...
Page 45
44 r carbon film rd-az182j- 2 1/6 1.8k ohm j r413 r414 r carbon film rd-az183j- 5 1/6 18k ohm j r201 r203 r526 r813 r814 r carbon film rd-az184j- 7 1/6 180k ohm j r504 r623 r625 r626 r637 r638 r651 r carbon film rd-az220j- 2 1/6 22 ohm j jw117 r534 r carbon film rd-az221j- 3 1/6 220 ohm j r552 r933 ...
Page 46
45 8. 511mc parts name parts code qt’y description location am rf unit 5lr0000826 1 rbw07vb-k5020 l101 ant am loop 9cd6810200 1 loop-7 at101 ant fm 9716805900 1 1.5m pig tail blk at001 c cera ccxb1h101k 1 50v b 100pf k (tapping) cc203 c cera ccxb1h102k 6 50v b 1000pf k (tapping) cc001 cc253 cc254 cc...
Page 47
46 conn as 9738829400 1 ul 2851 #30 5p 260mm cn601 conn as 9738829500 1 ul 1533 #28 2p 260mm cn602 conn as 9738829800 1 fft 6p 220mm p1.25 cn705 cn705 conn as 9738832100 1 7p 200 p=2.5 boardin cn509 cw504 conn as 9738833900 1 #22 8p board-in 300mm cn901 cw901 conn as 9738834900 1 ul 2468 #26 4p+3p+2...
Page 48
47 r carbon film rd-az124j- 1 1/6 120k ohm j r513 r carbon film rd-az151j- 5 1/6 150 ohm j r627 r628 r738 r747 r755 r carbon film rd-az152j- 3 1/6 1.5k ohm j r740 r749 r757 r carbon film rd-az153j- 9 1/6 15k ohm j r403 r404 r411 r412 r515 r553 r554 r643 r644 r carbon film rd-az154j- 3 1/6 150k ohm j...