Pioneer GEX-P7000TV Service Manual page 48

GEX-P7000TV,P7000TVP
Procedure Adjustment Input signal
Item
7 FM Play a
modulator
38 kHz
leakage
adjustment
8 FM Play a CD of
modulator 400 Hz, 0 dB
modulation (or 500 Hz or 1 kHz)
level
adjustment
48
Adjustment Adjustment method
Point
CD. VR501 Set the MODE switch (S1001) to the FM modulator mode. Connect a
multi-CD and start-up the source with the CD. Set the modulator
frequency to 89.1 MHz on the menu screen. Monitor pin 14 of IC501
(BA1404F) with an oscilloscope and adjust 38 kHz leakage to the
minimum.
Note: To use the menu screen, connect an RGB monitor.
Note: If this has not been adjusted properly, S/N deteriorates during
FM reception.
VR502 Set the MODE switch (S1001) to the FM modulator mode. Connect a
multi-CD and start-up the source with the CD.
Set the modulator frequency to 89.1 MHz and the modulation level to
3 on the menu screen.
Connect the antenna select switch unit to the red mini-jack (CN501) of
the antenna select unit output on the TV modulator unit. Monitor the
output from the antenna select switch unit using a linear detector.
Adjust the modulation level to 100 kHz.
Note: If this has not been adjusted properly, sound becomes too loud
or low during FM reception.
(Oscilloscope(2))