JVC 340 SC - Manual (Page 138)

Chapter 4—Maintenance
Model 330, 340SC, and 370SC Service Manual 4-25
Table 4-2 Lens Replacement
Lens Throw Lens Part Number or Designation
Ratio Red Green Blue
1.5:1 101241 101241 101715
3:1 900609-3 900609-2 900609-1
5:1 101239 101239 101239
7:1 101240 101240 101240
NOTE: More details on lens options, converters and other lens information
can be found in the appropriate model Operator's Manual.
4.14 (SCB) Socket Battery Replacement
As indicated in the troubleshooting table (under “Picture-Various Problems”,
weak backup RAM socket batteries in the SCB can cause lost data when the
projector is turned off and back on again. All four (4) of these batteries should be
replaced at the same time if this condition occurs.
CAUTION!
Never place the socket battery on a metal
surface! The positive and negative terminals could short out and destroy
the battery!
WARNING!!!
Danger of explosion if this battery is
incorrectly replaced! When replacing the Lithium batteries, be sure they
are ilnstalled with the correct polarity. If installed backwards they could
explode! Replace only with the same or equivalent type recommended by
the manufacturer. Dispose of the old Lithium batteries in accordance with
local safety codes. Contact your local authorities for proper disposal
procedure.
To replace the SCB socket batteries:
CAUTION!
When replacing SRAM all channel data
will be lost. All channel data must be downloaded.
1. Download all channel data on the System Controller.
2. Remove the System Controller Board PCB (refer to Section 4.11).