Adjustment Of Ballast Unit Output Power; List Of Parts Requiring Adjustment; Adjustment Jigs; Ballast Unit Output Power - Sharp XV-Z3000 Service Manual

[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).
Part name
1
Cement resistor
2 Control PWB
3
Ballast microprocessor
4
5V regulator
5 PWM controller

2. Adjustment jigs

The following jigs are required for adjusting the ballast unit output power (lamp power).
Part name
1
Adjustment jig (resistance load 25½)
2 Connecting cord (conversion cable)
3. Ballast unit output power (lamp power) adjustment method
Adjust the ballast unit output power (lamp power) in the following method.
[Setting method]
XV-3000
DT-500
Projector
[Adjustment method]
(1) Unplug the ballast unit lamp cable(QCNW-D573WJQZ) of the XV-Z3000, DT-500
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
( UNTZA018WJZZ).
(3) Connect TP1 of the adjustment jig ( UNTZA018WJZZ) to the negative terminal of the
tester and TP2 to the positive terminal.
(4) Turn on the XV-Z3000, DT-500 projector.
(5) Age the projector for 60 seconds or more.
(6) Adjust the volume resistor ( 7728) 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.
ef No.
Part code
-FZA002WJZZ
905
DUNTKD148WEF1
--
IC7707 H-iXB390WJZZ
IC7704 VHiTA78L05F-1Y
VHiM51995AF-1Y
IC7701
Part code
UNTZA018WJZZ
QCNW-E007WJZZ
Ballast Unit
Lamp Cable
(QCNW-D573WJQZ)
C onnectingC ord
(Q C N W -E007WJZZ)
27
Manufacturer
Asahi Communication
SMK
Tester
(Voltage)
+
Ð
TP1
AdjustmentJig
( U N TZA 018WJZZ)
TP2
XV-Z3000
DT-500