Advertisement
1. Test equipmentjigs necessary for
adjustment
1) Dual-trace oscilloscope
2) Colour bar generator
3) Voltmeter
4) Monitor TV (with A/V jacks)
5) Alignment tapes:
MH-2: Part No. 7099052
24HMAF-2:
Part No. 7099175
(Hi-Fi alignment tape)
6) Blank tape
.
7) CAR oscillator
2. Cautions on adjustment
1) The following conditions apply when otherwise not
specified.
Probe of oscilloscope: 10:1
Synchronization of oscilloscope: Internal syne
Ground of test equipment:
PG2508 pin 6
(on MAS board)
2) When performing more than one adjustment, follow
the specified order.
3. Tips for adjustment
3-1.Procedure to reset the main microprocessor
The main microprocessor is not reset even when
the power cord is unplugged from the AC outlet
because its power is backed up by a backup
circuit, Press $708 on the MAS board to reset the
entixe microprocessor. Do not press the reset
switch with the power cord unplugged from the
AC outlet as the slow tracking preset value could
drift. If the preset value drifts, plug the power
cord into an AC outlet and press the reset switch
again with the power turned on. It is
recommended that you press the reset switch
after reinstalling the front panel.
Fig. 5
5
rocedure to Switch off the blue pee
:
function
1) Press the "MENU" button of the remote control to
display the menu on the monitor TV screen.
2) Press Cursor button to select the VCR setup screen.
3) Press Cursor bution to specify blue background off.
3-3. Procedure to obtain the LP head playback
mode (X-value adjustment test mode)
Press the CH UP(&) and DOWN(¥) buttons of the
remote control provided simultaneously when an
alignment tape is being played and hold them, then
press the "CHANNEL Y "button on the VCR;
The
VCR enters the LP head playback mode (X-value
adjustment test mode).
4. Connections of test equipment
Connect the test equipment as follows when otherwise
not specified.
:
1) Connect a colour bar generator to the video input.
jack of the VCR.
2) Connect a monitor TV to the Euro Socket of the VCR.
3) Connect an antenna to the antenna jack and receive
a TV broadcast (only for sound multiplex
adjustment).
Advertisement
Chapters
