Service manual

29
DT-100
Ref No.
1
R905
2 --
3 IC7707
4 IC7704
5 IC7701
1
2

Adjustment jig (resistance load 25Ω)
Connecting cord (conversion cable)
Part name
Part name
Part code
Part code
PWM controller

RR-FZA002WJZZ
DUNTKD148WEF0
RH-iXB458WJZZ
Manufacturer

RUNTZA018WJZZ
Asahi Communication

QCNW-E007WJZZ
SMK
VHITA78L05F-1Y
VHIM51995AF-1Y
Cement resistor
Control PWB
Ballast microprocessor
5V regulator


Ballast Unit
Lamp Cable
(QCNW-D573WJQZ)
Adjustment Jig
(RU NTZA 018WJZZ)
C onnecting C ord
（Q C N W -E007WJZZ)
Projector
TP1
TP2
−
＋
[Adjustment of ballast unit output power (lamp power)]

1. List of parts requiring adjustment
When replacing the following parts, adjust the ballast unit output power (lamp power).


2. Adjustment jigs
The following jigs are required for adjusting the ballast unit output power (lamp power).


3. Ballast unit output power (lamp power) adjustment method
Adjust the ballast unit output power (lamp power) in the following method.


[Adjustment method]
（1）Unplug the ballast unit lamp cable(QCNW-D573WJQZ) of the projector from 
the lamp and connect the cable to the connecting cord (QCNW-E007WJZZ).
（2） Connect the connecting cord (QCNW-E007WJZZ) to the adjustment jig 
(RUNTZA018WJZZ).
（3） Connect TP1 of the adjustment jig (RUNTZA018WJZZ) to the negative terminal of the 
tester and TP2 to the positive terminal.
（4） Turn on the projector.
（5） Age the projector for 60 seconds or more.
（6） Adjust the volume resistor (R7728) of the ballast control PWB (DUNTKD148WEF0) so 
that the voltage of the tester reaches 83± 0.5 V.

Adjustment value: 83± 0.5 V

[Cautions]
（1） Caution for electric shock: Do not touch the test points TP1 and TP2 of the adjustment 
jig when supplying power since a high voltage and large current is applied to them.
（2） Caution for heat: Be careful that the resistance load of the adjustment jig produces a high 
temperature when supplying power.
（3） Connection of the lamp cable: Check that the lamp cable and connecting cord (QCNW-E
007WJZZ) are connected securely.
Poor connection may cause smoking or ignition due to arc discharge.


[Setting method]

Tester
(Voltage)
