Mts Operation Check; Stereo&A Broakcast Receiving Check; Mts Mode Check; Stereo Separation Check - Hitachi 36UX59B Service Manual

MSLXU
Xl. MTS OPERATION CHECK
1. STEREO/SA BROADCAST RECEIVING CHECK
Adiustment Preoaration
(1) Set the TV set so that a MTS broadcast
(STEREO/SAP) can be received.
STEREO
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(2) Set MTS mode to STEREO or SAP mode.
Note: To select between "STEREO/SAP,"
display sound setting of MTS mode and
Select AUDIO MENU (ADVANCED
SETTINGS).
(3) Set BALANCE to the center.
Adjustment Procedure
(1) When one of the MTS broadcast stereo SAP is
received, check that "ST" or "SA" is displayed on
the screen.
(2) Stereo broadcast receiving check
(a) Select MTS mode and press cursor b but-
ton to display "STEREO" on the screen.
(b) When only Lch signal is received, Lch
sound comes out from the left speaker.
(c) When only Rch signal is received, Rch
sound comes out from the right speaker.
(d) When monaural signal is received, monau-
ral sound comes out from both the right
and left speakers.
(3) SAP broadcast receiving check
(a) Select MTS mode. Press cursor b button
to display "SAP" on screen.
(b) SAP signal comes out from both of the
right and left speakers.
(c) When to SAP signal, the sound on "MAIN"
side (refer to (3)) comes out.
Note: When the EXIT/RECALUCS button is
operated, "STEREO", "ST" or "SA" are
shown for approx. for 4 sec.
2. MTS MODE CHECK
Adjustment Preparation
(1 ) Set the TV set so that a MTS broadcast
(STEREO/SAP) can be received.
(2) Set BALANCE to the center.
(2) When "MTS MODE" is set to 'STEREO" mode,
check that STEREO indication which has been
OFF are turned ON and that STEREO and SA
sound can be received.
3. STEREO SEPARATION CHECK
Adjustment Preparation
(1 ) Set the set so that a MTS broadcast
(STEREO/SA) can be received.
(2) Make surround "OFF".
(3) Set MTS MODE to "STEREO."
(4) Connect AUDIO OUT terminals L and R to an
oscilloscope.
Adiustment Procedure
(1) When stereo L only signal (or R only signal) is
received, check that the output level ratio of Lch
and Rch is 15dB or more.
(Example)
When L only is received (100% modulation)
Adjustment Procedure
(1) When "MTS MODE" is set to "MONO" mode,
check that STEREO indication which has been
ON are turned OFF and that monaural sound
comes out from the right and left speakers.
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