1.3 Surround Check
FLEX CONT (Continued)
Adjustment preparation
MASK STR 7
(1) Input the following audio signals to the audio
MASK END 7
input of the VIDEO INPUT terminals.
PLL MASK 1
MASK POL 1 When checking surround:
PANEL BRT 5F @ L CH: 400 Hz sine wave, 475mVrms
@ R CH: 5kHz sine wave, 475mVrms
FLEX CONT Set the AUDIO ADVANCED SETTING for INT.
NTSC SDTV HDTV SPEAKERS ON,DYNAMIC BASS OFF,
PLL H PH 7 7 7 LOUDNESS OFF and PERFECT VOLUME OFF
MASK H 7F 7F 7F Set the volume control of FRONT, CENTER, and
MASK V 7F 7F 7F REAR to around the center.
VT POSI 7F 7F 7F Set the BASS, TREBLE and BALANCE to center.
VB POSI fF 7F 7F Note: Front waveform: Front speaker output of the
HR POSI 7F 7F 7F set.
HL POSI 7F 7F 7F
Rear wavefrom: Rear speaker output of the
V COMP 7 7 7 set.
V IND POSI 7 7 7 Center waveform: Center speaker output of
PANEL T 7 7 7 the set.
PANEL B 7 7 7
1.3.1 Surround off check
3DYC RESET
Adjustment procedure
MN8280
BACK PORCH 2 (1) Set to SURROUND: OFF and check that the
VPK LIMIT 0 waveform shown below is obtained (Input signal
0 and @ ).
COLOR FREQ 03
FRONT
TCSOA17
PLL W 0
PLL R 0 (5kHz)
TA1270
TINT 3E
(400Hz)
SUB CONT OD
SUB COLOR 10
Note: The rear and center will have no output.
1.2 Comb filter operation check
Adjustment preparation
1.3.2 Surround off/monaural check
(1) Receive the color bar signal at the regular
tuning point. Adjustment procedure
(2) Set the CONTRAST control to MAX and the Check that the following waveform is obtained. The
other controls to center. amplitudes of 2 channels are equal.
(3) Set the Al to OFF, and 3D Y/C to ON in (Input signal @ only-L mono input).
Advanced Settings.
FRONT
Adjustment procedure
(1) Check that between the color bars there are not
line dots every second color bar as shown in the (400Hz)
R
(400Hz)
Note: Monaural check can be omitted. The rear
and center have no output.
1.3.3 Matrix surround check
Check (@and @ line dots.
Adjustment procedure
(1) Set to SURROUND: MATRIX
l Check that the following waveforms are obtained.
(Input signal 0 and 0 ).
Jl |
ACEC
