Advertisement
3.1 Before adjustment
3.1.1 Precaution
This model does not contain adjustment controls (VR).
General deck system, camera system and monitor system ad-
justment are not required. However, if circuit board mounting
the EEPROM needs replacement, please use original EEPROM
on to new board. Then adjustment are not required. And if parts
such as the following need replacement, special computerized
adjustment are required. Electrical adjustment with personal
computer is setup and it adjusts using a service support sys-
tem. Please contact to JVC Service for detail information.
• OP BLOCK ASSEMBLY
• EEPROM (IC1003 of MAIN board)
In the event of malfunction with electrical circuits, troubleshoot-
ing with the aid of proper test instruments most be done first,
and then commence necessary repair, replacement and ad-
justment, etc.
• In case of wiring to chip test points for measurement, use IC
clips, etc. to avoid any stress.
• Since connectors are fragile, carefully handle them in discon-
necting and connecting.
• In the following work, use the patch cords as required. For
details of the patch cords, see the "BOARD INTERCONNEC-
TIONS" (CHARTS AND DIAGRAMS).
3.1.2 Required test equipments
• AC power adapter
• Color television or monitor
• Oscilloscope
(dual-trace type, observable 100 MHz or higher frequency)
It is recommended to use one observable 300 MHz or higher
frequency.
• Digital voltmeter
• Frequency counter (with threshold level adjuster)
• Personal computer
SECTION 3
ADJUSTMENT
3.1.3 Required adjustment tools
Torque driver
YTU94088
Chip IC replacement jig
PTS40844-2
INF adjustment lens
YTU92001B
Light box assembly
YTU93096A
Alignment tape
MC-*
Service support system
YTU94057-**
Bit
Tweezers
YTU94088-003
P-895
Cleaning cloth
Guide driver (Hexagonal)
KSMM-01
D-770-1.27
INF lens holder
Camera stand
YTU94087
YTU93079
Gray scale chart
Color bar chart
YTU94133A
YTU94133C
PC cable
Communication cable
QAM0099-***
YTU93107A
Jig connector cable
Extension connector
YTU93106B
YTU94145C-30
Table 3-1-3a
3-1
Advertisement
