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2-1-2, When IT004 is Replaced
When IT004 is replaced, the data in the VTR is required
to memorize in the new one. So perform the following
procedures.
1. Press the channel up/down buttons on the VTR
simultaneously for more than 5s while the display
blinks and the unit is in the power off mode.
2. And then within 2s, press the CANCEL button on the
remote control unit.
3. After displaying the address at the channel display area
and the data at the minute display area, set the address
to 12 using the channel up/down buttons on the remote
control unit.
Next, set the data to 87 using the FF/REW buttons on
the remote control unit. The data goes up using FF
button and down using REW button.
Address
Data
4. Set each address and data in the table below following
the description above.
[aares Pate]
a
5.
Perform the adjustment described in the item "2-1-1.
Playback Phase (PG) Adjustment".
6.
Pull out the power cord plug from the AC outlet once
and insert the power cord plug into the AC outlet
again.
7.
Perform the channel presetting as the ITO04 replaced
has no channel data.
2-46
2-2. Audio Circuit
PS034
BS001
17001 C68
©
@)
Main PC Board
2-2-1.
Bias Level Adjustment
Test point:
Pins | and 2 of BSOO1
Test equipment: Millivoltmeter
Adjusting point: PS034
I.
2,
Set the VTR to record mode.
Connect pin 2 to the millivoltmeter aid pin | to
ground.
Adjust PS034 to obtain 2.6 + 0.1
mV (rms).
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