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3.6 PREPARATION
3.6.1 Precautions
(1) The DV section of this model is based on a special ad-
justment method using a PC. However, ordinary adjust-
ment is required only when the part listed below has been
replaced. In this case, the adjustment should be per-
formed by a service center equipped with the required
facilities.
2
• E
PROM (IC1007 on DV main board)
In case of trouble with the electrical circuitry, First iden-
tify the faulty position with a measuring tool as described
below. Proceed to repair, replacement and/or adjustment
only after the troubleshooting.
(2) When observing a chip TP, use an IC clip or similar tool
to protect the chip against stress. When replacing a chip
part (IC, particularly), remove solder completely before
replacing. (This is to prevent separation of the pattern.)
(3) The connectors are fragile. Be careful when plugging or
unplugging a wire.
3.6.2 Equipment required for adjustment
1
Personal computer (Windows compatible)
2
Color monitor
3
Oscilloscope (2-CH, 100 MHz or more)
4
Frequency counter
3.6.3 Tools required for adjustments
Alignment tape
Jig connector cable
US : MC-1
PTU94018B
PAL : MC-2
PC cable
Jig RCU
US : QAM0099-002
PTU94023B
PAL : QAM0099-005
Fig. 3-6-3a
3-6
ELECTRICAL ADJUSTMENT (DV)
SSS software
PTU94016-3
3.6.4 Setup
1. Setup for computer adjustment
— Setup by extending the jig connector —
When performing the adjustment by the Service Support Software,
set the VCR to external communication mode by transmitting the code
"6C" from the Jig RCU.
Jig RCU
[PTU94023B]
INITIAL MODE
DATA CODE
CUSTOM CODE
[Data transmitting method]
43: A CODE
Depress the "
" ( 3 ) button
53: B CODE
after the data code is set.
Switch
<JLIP>
Fig. 3-6-4a
Setup for Computer Adjustment
Service Support Software
RS-232C Port
JVC
MENU
PC Cable
QAM0099-002
Personal Computer
<Note> : Switch setting of the
Jig connector cable
Switch OFF
(UP)
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