ELECTRICAL ADJUSTMENT <K, EZ Model>
<DECK SECTION>
8. Head Azimuth Adjustment
(MW)(LW)E TUNER C.BSetting : Y Test tape : TTA-320
Y Test point : J201 (Phones jack)
Y Adjustment location :
Head Azimuth Adjustment Screw
L003 MW/LW BAR ANTENNAMethod : Play back the 10kHz signal of test tape and adjust
screw so that the output becomes maximum. Next
perform REV PLAY mode.
TC0515
3
L002
L005TC001
IC0017
16
L007L004
L0062
L051
IC0024
TP1 (VT)
JW005
PRACTICAL SERVICE FIGURE
DECK1 : PLAY HEAD
DECK2 : R/P/E HEAD<TUNER SECTION>
<DECK SECTION>
<FM SECTION>
Tape speed :3000 Hz ? 90 Hz
IHF Sensitivity :Less than 14 dBWow & flutter :Less than 0.35%
(THD 3%)[at 87.5/98.0 MHz](JIS RMS)
Less than 15dBTake-up torque :30 ~ 60 g-cm
66[at 108.0 MHz](FWD, PLAY)
REVFWDSignal to noise ratio :More than 60 dBF.F & REW torque :55 ~ 150 g-cm
(Input - 54 dB)[at 98.0 MHz]Back tension :1 ~ 7 g-cm
DECK 1DECK1,2Distortion :Less than 2.0%(FWD, REV)
(Input - 54dB)[at 98.0 MHz]S/N ratio :More than 38 dB
Stereo separation :More than 25 dB(PB, AC, DC Vol.21)
[at 98.0 MHz]More than 36 dB
<TUNER SECTION>Intermediate frequency :10.7 MHz(R/PB, SP OUT, AC)
1. AM IF Adjustment5. LW Tracking AdjustmentDistortion :Less than 3.0%
L007.......................................................................603kHzL003 (LW)............................................................153 MHz(PB, DC)
<AM (MW) SECTION>
Adjust the level at 603 kHz to MAX. by L007TC051....................................................................288 kHzSensitivity :Less than 52 dBLess than 5.0%
(S/N 10 dB)[at 603 kHz](R/PB, DC)
2. MW VT Adjustment6. FM VT AdjustmentNoise levelLess than 35 mV
Less than 51 dB
Setting : Y Test point : TP1 (VT)Setting : Y Test point : TP1 (VT)[at 999/1404 kHz](PB, AC, DC)
Y Adjustment location : L004Y Adjustment location : L006Less than 55mV
Signal to noise ratio :More than 35 dB
Method : Set to MW 1611 kHz and adjust L004 so that theMethod : Set to FM 108.0 MHz and adjust L006 so that the test(Input - 74 dB9[at 999 kHz](R/PB, AC)
test point becomes 5.6 ? 0.05 VV .point becomes 6.0 ? 0.05 V V.DistortionLess than 2.0%Erasing ratioMore than 40 dB
(Input - 74 dB)[at 999 kHz](w/o Filtor)
3. MW Tracking Adjustment7. FM Tracking AdjustmentIntermediate frequency :450 kHz
L003 (MW) ............................................................603 kHzL005..................................................................108.0 MHz
TC001...................................................................1404 kHz<LW SECTION> <EZ, K Model>
Sensitivity :Less than 57 dB
4. LW VT Adjustment
[at 153 kHz]
Setting : Y Test point : TP1 (VT)Less than 56 dB
Y Adjustment location : L051
[at 198/288 kHz]
Method : Set to LW 288 kHz and adjust L051 so that theSignal to noise ratio :More than 35 dB
test point becomes 4.5 ? 0.05 VV .[at 198 kHz]
3940
ACEC
