Aiwa CSD-EL55, Service Manual

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ELECTRICAL ADJUSTMENT <K, EZ Model>
<TUNER SECTION>
1. AM IF Adjustment
L007 ....................................................................... 603kHz
Adjust the level at 603 kHz to MAX. by L007
2. MW VT Adjustment
Setting : • Test point : TP1 (VT)
• Adjustment location : L004
Method : Set to MW 1611 kHz and adjust L004 so that the
test point becomes 5.6 V
±
0.05 V.
3. MW Tracking Adjustment
L003 (MW) ............................................................ 603 kHz
TC001 ................................................................... 1404 kHz
4. LW VT Adjustment
Setting : • Test point : TP1 (VT)
• Adjustment location : L051
Method : Set to LW 288 kHz and adjust L051 so that the
test point becomes 4.5 V
±
0.05 V.
5. LW Tracking Adjustment
L003 (LW) ............................................................ 153 MHz
TC051 .................................................................... 288 kHz
6. FM VT Adjustment
Setting : • Test point : TP1 (VT)
• Adjustment location : L006
Method : Set to FM 108.0 MHz and adjust L006 so that the test
point becomes 6.0 V
±
0.05 V.
7. FM Tracking Adjustment
L005 .................................................................. 108.0 MHz
IC001
IC002
JW005
TP1 (VT)
L007
L004
(MW) (LW)
L003 MW/LW BAR ANTENNA
L002
L005
TC001
E TUNER C.B
1
3
TC051 5
7
2
L051
4
FWD
REV
DECK1 : PLAY HEAD
DECK2 : R/P/E HEAD
DECK 1 DECK1,2
L006
6
6
6
<DECK SECTION>
8. Head Azimuth Adjustment
Setting : • Test tape : TTA-320
• Test point : J201 (Phones jack)
• Adjustment location :
Head Azimuth Adjustment Screw
Method : Play back the 10kHz signal of test tape and adjust
screw so that the output becomes maximum. Next
perform REV PLAY mode.
PRACTICAL SERVICE FIGURE
<TUNER SECTION>
<FM SECTION>
IHF Sensitivity : Less than 14 dB
(THD 3%) [at 87.5/98.0 MHz]
Less than 15dB
[at 108.0 MHz]
Signal to noise ratio : More than 60 dB
(Input - 54 dB) [at 98.0 MHz]
Distortion : Less than 2.0%
(Input - 54dB) [at 98.0 MHz]
Stereo separation : More than 25 dB
[at 98.0 MHz]
Intermediate frequency : 10.7 MHz
<AM (MW) SECTION>
Sensitivity : Less than 52 dB
(S/N 10 dB) [at 603 kHz]
Less than 51 dB
[at 999/1404 kHz]
Signal to noise ratio : More than 35 dB
(Input - 74 dB9 [at 999 kHz]
Distortion Less than 2.0%
(Input - 74 dB) [at 999 kHz]
Intermediate frequency : 450 kHz
<LW SECTION> <EZ, K Model>
Sensitivity : Less than 57 dB
[at 153 kHz]
Less than 56 dB
[at 198/288 kHz]
Signal to noise ratio : More than 35 dB
[at 198 kHz]
<DECK SECTION>
Tape speed : 3000 Hz
±
90 Hz
Wow & flutter : Less than 0.35%
(JIS RMS)
Take-up torque : 30 ~ 60 g-cm
(FWD, PLAY)
F.F & REW torque : 55 ~ 150 g-cm
Back tension : 1 ~ 7 g-cm
(FWD, REV)
S/N ratio : More than 38 dB
(PB, AC, DC Vol.21)
More than 36 dB
(R/PB, SP OUT, AC)
Distortion : Less than 3.0%
(PB, DC)
Less than 5.0%
(R/PB, DC)
Noise level Less than 35 mV
(PB, AC, DC)
Less than 55mV
(R/PB, AC)
Erasing ratio More than 40 dB
(w/o Filtor)