21
7. TEST EQUIPMENT REQUIRED FOR SER-
VICING
For measuring or checking your Cassette Deck, the
following instruments and materials are necessary.
Audio Oscillator (AF OSC)
Attenuator (600
)
Audio signal meter
Oscilloscope
Wow and Flutter Meter
Torque Meter (Cassette Type)
Digital Frequency Counter
Blank Tapes (Completely erased with bulk eraser)
AC-225 (Normal)
AC-514 (High Position)
AC-713 (Metal)
NOTE :
If any doubt is noted in a measured value, use new tape.
Test Tape
TCC-112 MTT-111
Wow and Flutter, Tape Speed
TCC-120 MTT-212N
Signal-to-Noise Ratio, Output
Level
TCC-130 MTT-150
Dolby Level Adjustment
TCC-174A MTT-255M Azimuth adjustment
(A-BEX) (TEAC)
Mirror cassette 12
m padless
TCC-902 MTT-902
Tape travel check
Head and guide gauge (M-300)
THG-801
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