Sony VPL-X2000U Service Manual page 124

(4) The lamp does not light up although the standby, analog power, and digital power are output.
(This unit has four circuits each for the lamp power supply and active filter for the lamp power supply. As all of these
circuits are the same, only the circuit of lamp 1 will be described here.)
4-6
START
Is TP2002 (LAMP 1)
of the M board H (5V)?
NO
Is F7001, R7001, and R7002 open?
NO
Do Pins 1 to 3 become 140V
when the power is turned on by
inputting AC100V?
NO
Check the above and confirm
that there is no fault and the
lamp is not lit.
NO
END
YES
No lamp ON signal is output from the
microprocessor side. Check the M board.
YES
Check if IC7201 of the GC board
connected to Q7001, Q7002, R7012,
R7042, R7074, and CN7003 and
R7162 of the GAB board of R7205
are damaged."
YES
Check if IC7201 of the GC board
connected to CN7003 is damaged.
YES
As the lamp power supply or lamp
may be damaged, replace the lamp
power supply or lamp.