Table of Contents
Advertisement
TCM-1000A
Tape Speed Adjustment
Record Bias Adjustment
Setting:
:
Procedure:
Power supply voltage: 2 V dc
1. Mode: record
VOL control: mechanical mid
Procedure:
blank tape
Mode:
FWD
speed checker
€)
§942
3002
CS-121
LF we
O
attenuator
digital frequency
'
oo
counter
i
WS-48
(3 kHz, 0 dB)
earphones jack
2. Mode:
playback
recorded
portion
Specification:
Speed checker
Digital frequency counter
3,000 Hz +1%
2,970 — 3,030 Hz
earphones jack
3. Adjust the VOLUME
control so that 1 kHz output
Adjustment Location:
is 77.5 mV (—20 dB).
4. Confirm that 250 Hz and 6.3 kHz output is —4 +3
bush
:
dB relative to 1 kHz output.
adjustment
hole
5. If necessary, change the parttern connections and
repeat the steps given above.
.
VTVM
reading
high
Adjustment Location:
main board
[MAIN
BOARD]
Advertisement
Table of Contents
