Toshiba TheaterWide 62HM95, Service Manual

Page: 13 / 197

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LIGHT ENGINE REPLACEMENT
Cautions when replacing LIGHT ENGINE
LIGHT ENGINE UNIT:
A271 : LV-672 TB 0D
LIGHT ENGINE is a heart of the TV and emits high heat.
Make sure to replace it after turning off the TV and wait
for sufficient cool down. (More than one hour is recom-
mended.)
Do not impact during replacement; otherwise, some
parts may be damaged.
Do not touch optical lens. Adhesion of dirt may deterio-
rate its performance.
Do not loosen any screw other than those to be removed
for adjustment or replacement.
LIGHT ENGINE emits ultraviolet rays when the TV is
ON. Make sure to be careful.
Read DMD bias value described in alphabet from the
data bar code. In service mode, DMDB value is con-
verted and fixed by the following table.
Refer to Service Mode for adjusting the service mode.
DMDB
B 00
C 01
D 02
E 03
F 04
DMD value in bar
code
Adjusted value
(Hex)
1-2. Adjustment is made from service mode. The adjusting
items consist of CWDL, CWDH and DMDB.
When CW delay number of the data bar code is 0450:
Double 45.0 to form hexadecimal number (HEX).
The adjusted value becomes “5A” for CWDL and “00”
for CWDH.
If hexadecimal number forms 3 or 4 digits, the latter 2
digits indicate CWDL while the first 2 digits indicate
CWDH.
(For 3 digits, CWDH=0*)
Note:
For converting decimal number to hexadecimal num-
ber, see the conversion table on the next page.
CWDL CWDH
0450 indicates 450 45.0
45.0 x 2=90 5A (hexadecimal)
1. Replacement of Light Engine Unit
1-1. When Light Engine Unit is replaced with a new one,
adjustment is required. Adjusted values are described
in bar code, and the values of bar code must be con-
ve r t e d t o t h e a d j u s t e d va l u e s fo r t h e s e t u p.
There are 2 types of bar code.
Serial bar code
Ex.
52A000A111111
Data bar code (CW: color wheel)
Ex. A000000B1111
CWdelay number: 4digits
Inch size
Substrate serial numbers
Serial numbers
DMD bias value
(Including with E998Z, SK01 to SK04, SK06,SK08 and SK09.)
Data bar code
Serial bar code