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
Содержание AMI-921DP
Страница 1: ...Service Manual MINI COMPONENT SYSTEM Model DAEWOO ELECTRONICS CO LTD AMI 921DP 921DPR...
Страница 8: ...7 EXPLODED VIEW AND PARTS LIST AMI 921DP 921DPR...
Страница 10: ...9 WIRING DIAGRAM AMI 921DP 921DPR...
Страница 11: ...10 BLOCK DIAGRAM AMI 921DP 921DPR...
Страница 12: ...11 SCHEMATIC DIAGRAM 1 POWER AMP AMI 921DP 921DPR...
Страница 13: ...12 SCHEMATIC DIAGRAM 2 CD AMI 921DP 921DPR...
Страница 14: ...13 SCHEMATIC DIAGRAM 3 TUNER AMI 921DP 921DPR 2 Band...
Страница 15: ...14 SCHEMATIC DIAGRAM AMI 921DP 921DPR FTZ 2 Band...
Страница 16: ...15 SCHEMATIC DIAGRAM AMI 921DP 921DPR FTZ 3 Band...
Страница 17: ...16 SCHEMATIC DIAGRAM 4 TAPE AMI 921DP 921DPR...
Страница 18: ...17 SCHEMATIC DIAGRAM 5 CONTROL AMI 921DP 921DPR...
Страница 19: ...18 PCB PATTERN LAYOUT AMP TUNER AMI 921DP...
Страница 20: ...19 PCB PATTERN LAYOUT CD TAPE AMI 921DP 921DPR AMI 921DP 921DPR POWER AMI 921DP 921DPR...
Страница 21: ...20 PCB PATTERN LAYOUT POWER CONTROL AMI 921DP 921DPR AMI 921DP 921DPR...