SECTION 3
ADJUSTMENT
3.1 PREPARATION3.2 TOOLS REQUIRED FOR ADJUSTMENT
(1) Precaution
Alignment tapeGuide driver (Hexagonal)
This model does not contain adjustment controls (VR).12D-770-1.27
MC-2
General deck system, camera system and monitor system
adjustment are not required. However, if MAIN board need
replacement, please use original EEP ROM on to new
board. Then adjustment are not required. And if parts such
as the following need replacement, special computerized
adjustment are required. 3.5.1 Electrical adjustment with
INF adjustment lensINF lens holder
personal computer is setup and it adjusts using a service34YTU94087
YTU92001B
support system. Please contact to JVC Service for detail in-
formation.
? OP BLOCK ASSEMBLY
? EEP ROM (IC1005 of MAIN board)
? MONITOR / VF ASSEMBLY
In the event of malfunction with electrical circuits, trouble-
shooting with the aid of proper test instruments most be5Camera stand6Light box assembly
YTU93079YTU93096A
done first, and then commence necessary repair, replace-
ment and adjustment, etc.
a) In case of wiring to chip test points for measurement,
use IC clips, etc. to avoid any stress.
b) Since connectors are fragile, carefully handle them in
disconnecting and connecting.
c) Short circuit between operation unit and DECK chas-Gray scale chartColor bar chart
78
YTU94133AYTU94133C
sis.
(2) Required test equipment
a) Color TV monitor.
b) AC power adapter
c) Oscilloscope (dual-trace type, observable 100 MHz
or higher frequency)
? It is recommended to use one observable 300 MHzExtension connector
Jig connector cable
910
or higher frequency.YTU93106BYTU94145C-30
d) Digital voltmeter
e) Frequency counter (with threshold level adjuster)
f) Personal computer
Communication cablePC cable
1112
YTU93107AQAM0099-005
Service support systemCleaning cloth
1314
YTU94057-67KSMM-01
Fig.3-2-1
(No.86733)1-19 |
ACEC
