Measurement And Adjustment; Cassette Deck Section - Panasonic SA-PM35MD Service Manual

Error Code Problem Condition
H01 Cassette deck
maifunctions
H02 Recording not possible REC INH SW detection error.
H03 Playback cannot
perform.
H06
No treble is produce
when a normal tape is
CrO2 SW detection
error played or
recorded.
Excessive treble is
produces when a CrO2
/Metal tape is played,
or the recorded treble
is destorted and at a
low level.
F01 The tape advances
slightly and then stops.
F02 Cassette deck will not
perform TPS function

9. Measurement and Adjustment

9.1. Cassette Deck Section

Measurement condition
- Record timer : OFF
- Make sure head, capstan and pressure roller are clean.
- Judgeable room temperature 20 ± 5 °C (68 ± 9 °F)
Measuring instrument
- EVM (Electronic Voltmeter)
- Digital frequency counter
Test tape
- Headazimuth adjustment (8 kHz, -20 dB); QZZCFM
- Tape speed adjustment (3 kHz, -10 dB); QZZCWAT
- Playback gain adjustment (315 Hz, 0 dB); QZZCFM
- Normal reference blank tape; QZZCRA
- CrO2 blank tape; QZZCRX
9.1.1. Head Azimuth Adjustment
Note :
If you wish to readjust the head azimuth, be sure to adjust with adhering the casette tape
closely to the mechanism by pushing the cebter of cassette tape with your finger. (Shown in
Fig. 1)
Possible Cause
MODE SW detection error.
Faulty contact or short circuit of mechanism mode switch. (
Faulty contact or short circuit of REC INH switch. (S974, S975)
HALF SW detection error.
Faulty contact or short circuit of HALF switch. (S972)
Cr02 SW detection error.
Faulty contact or short circuit of CrO2 switch (S973).
Reel pulse detection error.
Faulty reel pulse, faulty hole detect IC. (IC971)
Faulty TPS drive IC. (IC303)
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