Philips cd s 36 mh 3 service manual

Page 2

ADJUSTMENTS AND CHECKS
Equipment required:

- Universal test cassette SBC419 4822 397 30069
- Universal test cassette SBC420 4822 397 30071
- Friction test cassette 811/CTM 4822 395 30054
- Spring scale 50-5009 4822 395 80028
- Wow & flutter meter

- AC millivoltmeters

1. Azimuth (Fig. 1)

Azimuth alignment should be carried out on a complete

car radio; proceed as follows:

- Connect the millivoltmeters to the loudspeaker
outputs.

- Insert test cassette SBC419 (or SBC420), select
NOR (normal play) and play the 10kHz signal.

- Adjust Azimuth screw "A" for equal and maximum
output voltage reading for both RH and LH channel.

- Switch to REV (reverse play) and play the 10kHz
signal.

- Repeat the adjustment with screw "B"

2. Friction clutch 55
- Insert friction test cassette 811/CTM
(NOR and REV).
- Play take-up torque should be 35 - 759/cm.
- Fast wind torque should be 40 - 1509/cm.
- If the torque is not correct, replace clutch 55.

3. Wow & flutter/tape speed (Fig. 1)

This check is carried out on an complete car radio;

proceed as follows:

- Connect the wow & flutter meter to the LS outputs

- Insert test cassette SBC419 (or SBC420) and play
the 3150Hz signal

- The wow & flutter value should be 0.35%

- Tape speed should be 4.760m/sec. 2%

- The tape speed can be adjusted with screw "C"

In case of an excessive wow & flutter value, check

following parts for correct functioning:

- motor 56

- pressuer rollers 62, 84

- belts 63, 93

- friction clutches 55

- flywheels 92, 94

- pulley 71