8
M-670V/673V/675V
Tape Speed Adjustment
Switch position
VOLUME
: Mechanical center
VOR switch : OFF
Procedure :
After adjusting the 2.4cm/s speed, adjust the 1.2cm/s speed.
– Playback –
set
Test tape
WS-24, WS-12
(3kHz, –10dB)
frequency counter
J102
earphone jack
8
Ω
Adjustment Value :
Test Tape
Adjustment
Speed
Frequency counter
Part
WS-24
RV602
2.4cm/s
2,880 – 3,120Hz
WS-12
RV601
1.2cm/s
2,850 – 3,150Hz
Frequency difference between the beginning and the end of the
tape should be within 0.5%.
2.4cm/s (15Hz)
1.2cm/s (15Hz)
Adjustment Location :
RV601
1.2cm/s
speed adjustable resistors
RV602
2.4cm/s
[MAIN BOARD]
(SIDE B)
