LIGHT ENGINE REPLACEMENT
Cautions when replacing LIGHT ENGINE1-2. Adjustment is made from service mode. The adjusting
LIGHT ENGINE UNIT:items consist of CWDL, CWDH and DMDB.
A271: PJ-TB25-52/62 (Including with SK02 to SK08)
SK01: PJ-TB-25-52S/62SCWDL CWDH
(Including with SK03 to SK08 except SK02)
When CW delay number of the data bar code is 0450:
LIGHT ENGINE is a heart of the TV and emits high heat.
Make sure to replace it after turning off the TV and wait0450 indicates 450 45.0
for sufficient cool down. (More than one hour is recom-Double 45.0 to form hexadecimal number (HEX).
mended.)
Do not impact during replacement; otherwise, some
parts may be damaged.45.0 x 2=90 5A (hexadecimal)
Do not touch optical lens. Adhesion of dirt may deterio-The adjusted value becomes 5A for CWDL and 00
rate its performance.for CWDH.
Do not loosen any screw other than those to be removedIf hexadecimal number forms 3 or 4 digits, the latter 2
for adjustment or replacement.digits indicate CWDL while the first 2 digits indicate
LIGHT ENGINE emits ultraviolet rays when the TV isCWDH.
ON. Make sure to be careful.(For 3 digits, CWDH=0*)
1.Replacement of Light Engine UnitNote:
1-1. When Light Engine Unit is replaced with a new one,For converting decimal number to hexadecimal num-
adjustment is required. Adjusted values are describedber, see the conversion table on the next page.
in bar code, and the values of bar code must be con-
verted to the adjusted values for the setup.
There are 2 types of bar code.
DMDB
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.
DMD value in barAdjusted valueSerial bar code
code(Hex)
B00
C01
D02Data bar code
E03
F04
Refer to Service Mode for adjusting the service mode.Serial bar code
Ex.52A000A111111
Inch sizeSerial numbers
Data bar code (CW: color wheel)
Ex.A111111B1111
CWdelay number: 4digits
DMD bias value
Substrate serial numbers
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ACEC
TOSHIBA
