SECTION 3
ELECTRICAL ADJUSTMENT
3.1 PREPARATION2. Required test equipment
1. Precaution1. Color TV monitor.
Both the camera and deck sections of this model needs a2. AC power adapter/charger
personal computer for adjustment except simple adjust-3. Oscilloscope (dual-trace type, observable 100 MHz or
ment with potentiometers. If some of the following parts ishigher frequency)
replaced for repair or other reason, the repaired set mustNote:It is recommended to use one observable 300 MHz or
be adjusted with a personal computer.higher frequency.
Y OP block
4. Digital voltmeter
2
Y EPROM (IC1003 of MAIN board)
5. Frequency counter (with threshold level adjuster)
Y MONITOR
6. Personal computer
Y E2P ROM (IC7603 of MONITOR board)
In the event of malfunction with electrical circuits, trouble-3. Required adjustment tools
shooting with the aid of proper test instruments most beFor detsails of special jigs necessary for adjustment, refer to
done first, and then commence necessary repair, replace-page 1-2 and 1-3 of the Section 1.
ment and adjustment, etc.
1. In case of wiring to chip test points for measurement, use
IC clips, etc. to avoid any stress.
2. Since connectors are fragile, carefully handle them in
disconnecting and connecting.
3. Shortcircuit between operation un it and DECK chassis.
3.2 SETUP
1. Setup for electrical adjustment with personal computer
CN1010
TL3501(JIG CONN.)
REC MON
101
2011
Service Support
System software
JJLIP
/ EDIT
COVER
(JIG)
RS232C
1COM Port
MENU
EXTENSION CONNECTOR
Note)For supplying the power
through the coupler by
removing the cover (for jig),
use this extension connector PC CABLE
double for connecting the
Personal Computer
jig connector cable.
JIG CONNECTOR
CABLE
Fig. 3-2-1 Connection for Service support system
3-1 |
ACEC
