Sharp XV-Z9000E (serv.man12) Service Manual ▷ View online
45
XV-Z9000U/E
YES
YES
YES
YES
YES
Checking the lamp
light-up
Is discharge sound heard
when turning on the power
switch?
when turning on the power
switch?
The lamp fails to light up.
Check the power circuit.
Check the power circuit
or the fan circuit on the
main circuit.
or the fan circuit on the
main circuit.
Check the
microprocessor circuit.
Replace the ballast power
PWB.
microprocessor circuit.
Replace the ballast power
PWB.
NO
Replace the ballast power
PWB. Check the
microprocessor circuit.
PWB. Check the
microprocessor circuit.
NO
NO
Are the cooling fans
running well?
running well?
NO
Reconnect the sockets
tightly.
tightly.
NO
Is the lamp or CW line
socket out of position?
socket out of position?
Replace the lamp or the
CW.
CW.
Is a voltage of about DC
340 V applied across the
ballast power circuit
CP1001?
340 V applied across the
ballast power circuit
CP1001?
Is a voltage of over 3.5 V
applied at pin (1) of the
ballast power circuit
CP1501?
applied at pin (1) of the
ballast power circuit
CP1501?
46
XV-Z9000U/E
YES
YES
YES
No horizontal
synchronization
Is the terminal input
connection as specified? Is
the cable tightly
connected?
connection as specified? Is
the cable tightly
connected?
Check the line between
IC2506 and IC2509.
IC2506 and IC2509.
Check the line between
IC2506 and the input
terminal.
IC2506 and the input
terminal.
NO
NO
Is there the horizontal sync
pulse at pin (14) of
IC2506?
pulse at pin (14) of
IC2506?
NO
Use the specified cable.
Reconnect it tight enough.
Reconnect it tight enough.
Is there the horizontal
sync pulse at pin (11) of
IC2509?
sync pulse at pin (11) of
IC2509?
Go to "PC Board
Troubleshooting".
Troubleshooting".
YES
YES
YES
No vertical
synchronization
Is the terminal input
connection as specified? Is
the cable tightly
connected?
connection as specified? Is
the cable tightly
connected?
Check the line between
IC2506 and IC2509.
IC2506 and IC2509.
Check the line between
IC2501 and the input
terminal.
IC2501 and the input
terminal.
NO
NO
Is there the vertical sync
pulse at pin (14) of
IC2501?
pulse at pin (14) of
IC2501?
NO
Use the specified cable.
Reconnect it tight enough.
Reconnect it tight enough.
Is there the vertical sync
pulse at pin (8) of
IC2509?
pulse at pin (8) of
IC2509?
Go to "PC Board
Troubleshooting".
Troubleshooting".
47
XV-Z9000U/E
YES
NO
Checking IC3504 (3D
Noise Reduction) and its
Peripheral Circuits
Are there the input signals
at pins (88) (Y signal) and
(96) (C signal) of IC3504?
at pins (88) (Y signal) and
(96) (C signal) of IC3504?
Check IC3504 and its
peripheral circuits.
peripheral circuits.
Check the line up to the
PC board connector or
the circuits that follow the
PC board.
PC board connector or
the circuits that follow the
PC board.
NO
YES
Are there the output
signals at pins (84) (Y
signal) and (83) (C signal)
of IC3504?
signals at pins (84) (Y
signal) and (83) (C signal)
of IC3504?
Check the signal input
circuit or IC2505 and its
peripheral circuits.
circuit or IC2505 and its
peripheral circuits.
48
XV-Z9000U/E
YES
YES
YES
NO
Checking the
Component and RGB
Inputs
Are there signals at pins
(34), (36) and (38) of
IC2505?
(34), (36) and (38) of
IC2505?
Check the line from
Q2525 through Q2523 to
Q2524 and its peripheral
circuits.
Q2525 through Q2523 to
Q2524 and its peripheral
circuits.
Check the line between
Q2518 and Q2520 and its
peripheral circuits.
Q2518 and Q2520 and its
peripheral circuits.
Check the board-to-board
connections or the
circuits that follow the PC
board.
connections or the
circuits that follow the PC
board.
NO
YES
Are there signals at pins
(56/26), (58/28) and
(60/30) on the board-to-
board section of P3580?
(56/26), (58/28) and
(60/30) on the board-to-
board section of P3580?
NO
There are no RGB colors.
NO
Check the signal input
circuit or IC2505 and its
peripheral circuits.
circuit or IC2505 and its
peripheral circuits.
Check the circuit of the
color that fails to appear.
color that fails to appear.
YES
NO
Are there signals at pins
(3), (5) and (6) of IC2507?
(3), (5) and (6) of IC2507?
YES
There are no RGB colors.
NO
Check the line between
Q2509 and Q2517 and its
peripheral circuits, or
IC2507.
Q2509 and Q2517 and its
peripheral circuits, or
IC2507.
Check the circuit of the
color that fails to appear.
color that fails to appear.
Are there signals at pins
(49/19), (51/21) and
(53/23) on the board-to-
board section of P3580?
(49/19), (51/21) and
(53/23) on the board-to-
board section of P3580?
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