Product: Service Manual, for Tandberg TD-20A reel to reel tape deck. 38 pages.
Covers/Contents:
General
Dismantling the cabinet
Removing & replacing the black top cover
Removing & replacing the meter panel
Mechanical Checks & Adjustments
Check/adjust the braking force
Checking the pinch roller pressure
Tape tension arms
Changing the drive belt
Adjusting the thrust-bearing for the capstan
Changing the tape-counter belt
Changing the worm-gear motor
Changing the capstan motor
Changing the reel motor
Changing and adjusting the microswitch
Maintanance
Checking the tape path
Degaussing
Lubrication
Tape Path Adjustments and head adjustment
Adjusting the tape path
Adjusting the parallelism
Left tape tension arm
Tape guide posts
Pinch roller
Checking and re-adusting the flutter roller
Head Alignment w/Tanderg test tapes, four track
Head Alignment w/o Tandberg test tapes, four track
Head Alignment, two track
Record and playback curbes, NAB
Checking the record and playback curves, IEC
Fault in the total response curve, one channel
38 kHz filter in record amplifiers
EOT/BOT sensor (end of tape/beginning of tape)
Power On/Off circuit
TMI sensor (tape motion indicator)
Control circuit for reel motors
Worm-gear motor
Logic Circuits
The a-synchronous logic circuit
The PROM control unit
Electrical Adjustments
Circuit Diagrams and P.C. Boards
Service Bulletin #3: TD-20A's Logic
Service Bulletin #5: TD-20A blowing FF/RW fuse
Service Change Bulletin: Correction to pg. 19.
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