JVC MX-G500 Service Manual page 21

2. Cassette Deck
To adjust tape speed
Notes
1) Measuring tape:
i) VT-712/MTT-111(or equivalent)
(Tapes recorded with 3kHz)
ii) AC-225/MTT-5512(or equivalent)
2) Connect the cassette deck to the frequency counter
as in fig.1.
Pre-Setup
Step Item
Condition
1 NOR OUT
SPEED (connected to the
Control frequencycounter)
To adjust plabyback level/REC
Notes
1) Before the actual adjustment, clean the play/recording head.
2) Measuring tape :
i) VT-703 / MTT-114N(or equivalent 10kHz AZIMUTH control)
ii) AC-225/MTT-5512(or equivalent)
3) The cassette deck is connections as shown in fig.2.
1. Adjust Deck 1 Play Level
Pre-Setup
Step Item
Condition
1 AZIMUTH SPK OUT
(VTVM is
connected to
the scope)
Pre-Setup
1) Deck 1:VT-712
2) Press PLAY
SW button
3) Deck 2:Same
as above
Pre-Setup
After putting
MTT-114N into Deck 1
- Press FWD PLAY
button.
Cassette Deck
SPK OUT
Fig.1
To Adjust Standard
Turn VSR1 to
left and right
(FRONT PCB)
Cassette Deck
SPK OUT
(GND)
To Adjust Standard
Turn the control Max output
screw to as and same phase
shownin Fig.3. (both channels)
MX-G500
Frequency Counter
output
Remark
3KHz
1%
range
Oscilloscope
VTVM
In Out
Fig.2
Remark
After
adjustment
secure it with
REGION
LOCK.
1-21