Adjust Deck 2 Play Level/Rec Bias - JVC MX-GA77 Service Manual

MX-GA77

2. Adjust Deck 2 Play Level/REC BIAS

Pre-Setup
Step Item
Condition
1 AZIMUTH SPK OUT
(VTVM is
connected to
the scope)
2 Recording
Bias
Voltage
Recording /Play head
AZIMUTH control screw
(RVS Play)
Audio OSC.
1-22
Pre-Setup
After putting VT-703
into Deck 2
1)Press FWD PLAY
button.
After putting AC-225
Fig.4
into Deck 2
1)Press REC PLAY
button.
2)TAPE PCB JCW3,
connectted to VTVM
AZIMUTH control screw
(FWD Play)
Fig.3
SET
(MAIN PCB)
IN
AUX IN
To Adjust
Turn the control
screw to as
shown in Fig.3.
Turn JSR2L,
JSR2R to the
right and left
VTVM
TP
SPK OUT
IN
Fig.4
Standard Remark
Max output After
and same phase adjustment
(both channels) secure it with
REGION
LOCK.
CHECK TO
7mV( 0.5 mV)
Oscilloscope
OUT