GX-700/GX-700VCD
GX-700/VCD
■
ADJUSTMENTS
(DECK SECTION ONLY)
1. Before adjustment
●
Since head magnetization, dust accumulations, etc.
are likely to introduce error in the various character-
istics, it is very important that the heads are properly
demagnetized and cleaned.
●
Make adjustments of mechanical system, playback
system and recording system in that order.
●
Except for azimuth adjustment, adjust in the forward
direction.
●
Adjust at TAPE TEST MODE.
2. Instruments required
●
Audio frequency oscillator
●
ACVM or dual channel (ACVM)
●
DCVM
●
Wow/flutter meter
●
Oscilloscope
●
Frequency counter
●
Torque meter
TW-2111A (TX911580) ... Take up/back tension (FWD)
TW-2121A (TX911570) .... Take up/back tension (RVS)
CT-160L (TX911120) .................................. FF/REW
3. Test tape required
●
MTT-111N (TX911650) ........................... Normal speed
●
MTT-114N (TX911680) ................................ Azimuth
●
MTT-212N (TX911660) ...................... Playback level
●
MTT-256 (TX911300) ................ Playback frequency
response (Normal)
●
MTT-356 (TX911310) ................ Playback frequency
response (CrO
2
)
●
Reference tape
Type
I
/Normal (LH) .......... TDK AC225 (VU167200)
Type
II
/High (CrO
2
) ......... TDK AC514 (VU167300)
●
Test point
23
VR6
VR5
VR7
VR4
VR1
VR3
VR2
IC6
REC LEVEL ADJ.
(Lch)
REC LEVEL ADJ.
(Rch)
TAPE SPEED ADJ.
PB LEVEL ADJ.
(Lch)
PB LEVEL ADJ.
(Rch)
BIAS ADJ.(Lch)
BIAS ADJ.(Rch)