Bias Frequency Adjustment (Deck 1/2); Tuner Section; Am Rf Adjustment - Panasonic SC-TM760 Service Manual

Fig. 2
Fig. 3

14.2. Tuner Section

14.2.1. AM-IF Alignment
1. Connect the instrument as shown in Fig. 5.
2. Set the unit to AM mode.
3. Apply signal as shown in Fig. 5 from AM-SG.
4. Adjust Z2602 so that the output frequency is maximized in
Fig. 6.
Fig. 5
Fig. 6

14.2.2. AM RF Adjustment

1. Connect the instrument as shown in Fig. 7.
2. Set the unit to AM mode.
3. Set AM-SG to 520kHz.
4. Receive 520kHz in the unit.
5. Adjust L2601 (OSC) so that the EVM-AC is maximized.
6. Set AM-SG to 600Hz.
14.1.4. Bias Frequency Adjustment (Deck
1. Set the unit to "AUX" position.
2. Insert the Normal blank tape (QZZCRA) into DECK 2 and
set the unit to "REC" mode (use
3. Adjust L1002 so that the output frequency is within the
standard value.
7. Receive 600Hz in the unit.
8. Adjust L2601 (ANT) so that the EVM-SG is maximized.
9. Set AM-SG to 520kHz.
10. Receive 520kHz in the unit.
11. Adjust L2602 (OSC) so that the EVM-DC value is with
1.1±0.5V.
42
service manual SC-TM760
1/2)
Standard Value: 89 ~ 110 kHz
Fig. 4
Fig. 7
key).