SECTION 4
ADJUSTMENT
4.1 PREPARATION4.1.3 TOOLS REQUIRED FOR ADJUSTMENT
4.1.1 PrecautionAlignment tapeAlignment tapeCassette torque meter
MHP-CMHP-LCPUJ50431-2
Camera system and deck system of this model are specially
adjusted by using PC.
However, if parts such as the following are replaced, an
adjustment is required. The adjustment must be performed in a
Service Center equipped with the concerned facilities.
? OP BLOCK ASSEMBLY
? EEP ROM (IC102 of MAIN board)Roller driverCleaning ClothConn. ring
PTU94002-2KSMM-01YTU92001-111
? MONITOR
In the event of malfunction with electrical circuits, first find a
defective portion with the aid of proper test instruments as shown
in the following electrical adjustment procedure, and then
commence necessary repair/ replacement/adjustment.
? In observing chip TP, use IC clips, etc. to avoid any stress.INF Adjustment LensINF Adjustment Lens HolderCamera Stand
YTU92001BYTU94087YTU93079
Prior to replacement of chip parts (especially IC), remove the
solder completely to prevent peeling of the pattern.
? Use a patch cord if necessary. As for a patch cord, see the
BOARD INTERCONNECTIONS.
? Since connectors are fragile, carefully handle them in
disconnecting and connecting the FPC.
Light box AssemblyGray Scale ChartColor Bar Chart
YTU93096AYTU94133AYTU94133C
4.1.2 REQUIRED TEST EQUIPMENT
? Personal computer (for Windows)
? Color TV monitor
? Oscilloscope (dual-trace type, observable 100MHz or higher
frequency). The one observable 300 MHz or higher frequency
is recommended.
? Digital voltmeterJig Connector CablePC CableCommunication Cable
YTU93082EQAM0099-002YTU93107A
? DC power supply or AC adapter
? Frequency counter (with threshold level adjuster)
Service Support System
YTU94057-78
? Alignment tape
To be used for check and adjustment of interchangeability of
the mechanism.
(Video: Color bar signal, Audio: Non-signal)
? Cassette torque meter
This is used to cheek the back tension and play torque during
mechanism adjustment.
? Roller driver
To be used to turn the Roller driver to adjustment of the linear-
ity of playback envelope.
? Cleaning Cloth
Recommended the Cleaning cloth to wipe down the video
heads, mechanism (tape transport system), optical lens sur-
face.
(No.YF016)1-15 |
ACEC
