Revox G36 Service Manual

4 Troubleshooting
4.1 Mechanical troubleshooting
Trouble Cause How to repair
Capstan motor does
not run at either speed
Speed switch in mid-position
Speed switch defective
Jamming motor
Jamming capstan bearing
Switch to 3 3/4 or 7 1/2
speed
Replace wafer
Clean and lubricate
bearings (2.2.2.)
Replace capstan assembly
Noisy capstan Felt of the lower bearing
damaged
Loose flywheel
Damaged capstan-bearing
Damaged motor bearing
Replace felt and lubricate
with SAE 20 oil
Tighten fastening nut
Replace capstan assembly
Replace motor
Tape speed too low Open-circuit motor-winding
Faulty motor condenser
Jamming capstan
Replace capstan motor
Replace motor condenser
Replace capstan assembly
Capstan runs at 3 3/4
but not at 7 1/2 ips
Recorder too cold and drag
from new bearing or grease too
great
Run at 3 3/4 for a few
minutes. Recorder will
then pick up to 7 1/2 ips
Pinch roller arm does
not operate
Dirty solenoid
Dirty contacts in the push-
button assembly
Dummy-plug of remote
control removed
Clean and adjust solenoid
(2.2.3.)
Clean and adjust solenoid
(2.2.4.)
Connect pin 1, 2 and 3 of
the remote control socket
Brakes do not release Dirty brake-solenoid
Dirty contacts in the push-
button assembly
Dummy plug removed
Clean and adjust solenoid
(2.2.3.)
Clean and adjust contacts
(2.2.4.)
Connect pin 1, 2 and 3 of
the remote control socket
Push-button will not
remain in pressed
position
End of tape switch does not
operate
Incorrectly threaded tape
Adjust (2.1.5.)
Thread the tape as
explained in the instruction
manual
End of tape switch
does not operate
Dirty solenoid
End of tape switch contacts
maladjusted
Light bulb defective.
Light-port in the right-hand
guide pin blocked with tape
dust.
Clean and adjust (2.2.3.)
Adjust (2.1.5.)
Replace light bulb Osram
3644
Carefully clean the
opening.

Revox G36 Specifications

General

Brand	Revox
Model	G36
Category	Tape Deck
Language	English