JVC MX-G68V Service Manual page 22

MX-G68V/MX-G65V
To adjust plabyback level/REC
Notes
1) Before the actual adjustment, clean the play/recording
head.
2) Measuring tape :
i) VT-703 (10kHz AZIMUTH control)
ii) AC-225
3) The cassette deck is connections as shown in figure 1-7.
1. Adjust Deck A Play Level
Step Item
AZIMUTH
1
2. Adjust Deck B Play Level/REC BIAS
Step Item
1
AZIMUTH
Recording
Bias
2
Voltage
1-22
Pre-Setup
Pre-Setup
Condition
After putting VT -
SPK OUT
703 into Deck A
(VTVM is
- Press FWD PLAY
connected to
button.
the scope)
Pre-Setup
Pre-Setup
Condition
After putting VT-703
SPK OUT
into Deck B
(VTVM is
1)Press FWD PLAY
connected to
button.
the scope)
After putting AC-225
into Deck B
Fig 1-8
1)Press REC PLAY
button.
2)MAIN PCB JCW3,
connectted to VTVM
To Adjust
- Turn the control
Max output
screw to as shown
and same phase
in Figure 1-6.
(both channels)
To Adjust
- Turn the control
screw to as shown
Max output
in Figure 1-6.
and same phase
(both channels)
Turn JSR2L,JSR2R
7mV(
to the right and left
Standard
Remark
After
adjustment
secure it with
REGION
LOCK.
Standard
Remark
After
adjustment
secure it with
REGION
LOCK.
mV)
0.5