ADJUSTMENT
A MAIN C.B
PRACTICAL SERVICE FIGURE
<TUNER SECTION>
<FM SECTION> Sensitivity : (IHF, THD 3%)
VR1
<TAPE SECTION>
3000Hz ± 60Hz Less than 0.50% (RMS) 35 ~ 50 g-cm (FWD, REV) More than 36 g-cm 60 ~ 170 g-cm 3 ± 1.5 g-cm (FWD, REV) More than 43dB (PB, DC) Less than 3% (PB, DC) Except YZ1: Less than 7.0mV (PB, DC, VOL MAX) YZ1: Less than 4.0mV (PB, DC, VOL MAX) 63Hz + 2/-4dB ~ 8kHz + 3/-4dB TTA– 100 TTA– 210 TTA– 320 (120µ) TTA– 330
VOLUME
L104
IC1
L102 PVC1 TC101 TC104 TC102 L103 TC103
2 3 2
Tape speed : Less than 17dB[at 88/98MHz] Wow & flutter : Less than 18dB[at 108MHz] Take-up torque : Signal to noise ratio : More than 50dB F.F torque : [at 88/98/108MHz] Rew torque : Distortion : Less than 3%[at 98MHz] Back tension : Intermediate frequency : 10.7MHz ± 0.1MHz S/N ratio : FM stereo separation : More than 16dB[at 98.0MHz] Distortion : Noise level : <AM SECTION> Sensitivity : (S/N 10dB) Less than 58dB [at 600/1000kHz] Frequency response : Less than 56dB[at 1400kHz] Test tape : Signal to noise ratio : More than 28dB[at 600kHz] More than 29dB [at 1000/1400kHz] Distortion : Less than 5%[at 1000kHz] Intermediate frequency : 455kHz ± 3kHz
SFR 1
L105 PHONES J1
IC BLOCK DIADRAM
6
1
5 3
4
67
IC, LAG668FT2
L101 BAR ANT
<TUNER SECTION>
1. AM IF Adjustment L105 ....................................................................... 455kHz 2. AM Frequency range Adjustment L104 ..................................................... 515 ± 5kHz<YZ1> L104 ........................................ 517 ± 5kHz<YU,YL,YL1> TC104 .............................................. 1670 ± 10kHz<YZ1> TC104 ................................. 1775 ± 10kHz<YU,YL,YL1> 3 AM Tracking Adjustment L101 ....................................................................... 600kHz TC101 .................................................................. 1400kHz
<TAPE PLAYER SECTION>
6. Tape Speed Adjustment Settings : • Test tape : TTA–100 (TAPE CENTRE) • Test point : PHONES JACK (J1) • Volume : NON-CLIP (MAX-10dB) • Tape/Radio : TAPE • Tape select : NORM • Adjustment location : SFR1 Method : Play back the test tape and adjust for 3000Hz ± 15Hz.
4. FM Frequency range Adjustment L103 ................................. 87.0 ± 0.1MHz <YU,YL,YL1> L103 ............................................. 87.4 ± 0.1 MHz <YZ1> TC103 ............................ 109.0 ± 0.1MHz <YU,YL,YL1> TC103 ......................................... 108.3 ± 0.1MHz <YZ1> 5. FM Tracking Adjustment L102 .................................................................... 88.0MHz TC102 ............................................................... 108.0MHz
7. Head Azimuth Adjustment settings : • Test tape : TTA–330 • Test point : PHONES JACK (J1) • Volume : MAX • Tape/Radio : TAPE • Tape select : NORM • Adjustment location : Head azimuth adjustment screw Method : Play back the 8kHz signal of the test tape and adjust so that the output becomes maximum.
9
10
