Service manual

17
29H-FG5RU
17-1
17-2
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
(Continued)
No. Adjusting point Adjusting procedure/conditions Waveform and others
COLOUR
SYSTEM
1. Receive the "PAL COLOUR BAR" signal, press
the COLOUR SYSTEM key to select modes ex-
cept PAL, check the COLOUR is not working prop-
erly. Then, select the "PAL" mode. Check again
its colour so that it is working properly.
2. Receive "SECAM COLOUR BAR" signal, press
COLOUR SYSTEM key to select modes except
SECAM, check the COLOUR is not working prop-
erly. Then, select the "SECAM" mode. Check
again its colour so that it is working properly.
3. Receive “NTSC 4.43” signal, press COLOUR
SYSTEM key to select modes except NTSC4.43,
check the COLOUR is not working properly. Then,
select the “NTSC 4.43” mode. Check again its
colour so that it is working properly.
4. Receive “NTSC 4.43/3.58 COLOUR BAR” signal
thru AV, press COLOUR SYSTEM key to select
modes except N4.43/3.58, check the COLOUR
is not working properly. Then, select the “NTSC
4.43/3.58” mode. Check again its colour so that it
is working properly.
9
SOUND
SYSTEM
10
1. Receive “PAL-D/K” signal, press the “SOUND
SYSTEM” to select B/G, I. Check the sound out-
put is not working properly. Select D/K and check
the sound output to make sure it is working prop-
erly.
2. Receive “PAL-I” signal, press the “SOUND SYS-
TEM” to select B/G, D/K. Check the sound output
is not working properly. Select I and check the
sound output to make sure it is working properly.
3. Receive “PAL-B/G” signal, press the “SOUND
SYSTEM” to select I, D/K. Check the sound out-
put is not working properly. Select B/G and check
the sound output to make sure it is working prop-
erly.
HEADPHONE
OUTPUT
CHECKING
1. Receive PAL COLOUR BAR with SOUND 400Hz,
100% MODULATION (±50kHz Dev).
2. Maximum volume, and check the headphone
output with 400Hz sound and no sound out from
speaker.
11
Ref : OUTPUT level of HEADPHONE is as
following.
Apx. 500mVp-p
NOISE MUTE
CHECKING
1. Receive "PAL COLOUR BAR" signal.
2. Turn up the volume control to maximum, make
sure the sound is heard from the speakers. Then
put the unit in no signal state.
3. Check the sound mute is effective.
4. Finally turn sound level of CTV to minimum.
12
No.
Adjustment point
Adjustment conditions/procedure Waveform or remarks
H, V PROTEC-
TOR
1. Receive E-5ch(Monoscopepattern).
2. Connect the bias box to the cathode side (R607)
of D604.
3. Set the voltage of the bias box at 10V, and verify
that the protector does not operate.
4. Set the voltage of the bias box at 18V, and verify
that the protector operate.
1
PROTECTOR OPERATION CHECKING
Ref : Apx.13.3V.
No.
Adjustment point
Adjustment conditions/procedure Waveform or remarks
Front speaker
output check-
ing
1. Receive the E-10ch (PAL colour bar).
2. Set the volume to maximum and set the other
sound setting as follow.
3. Connect the voltmeter to the speaker terminal and
make sure the reading is 9 ± 1 Vrms.
1
SOUND OUTPUT CHECKING
#1 : Sound setting for model with
BBE and Super Bass in the
sound menu.
#2 : Sound setting for model with-
out BBE and with Bass + in the
sound menu.
Rear woofer
ouput check-
ing (For model
with woofer
box only)
1. Receive the E-10ch (PAL colour bar).
2. Connect the woofer wire from P303 to a 16 ohm
dummy load.
3. Set the volume to maximum and set the other
sound setting as follow.
4. Connect the voltmeter to the dummy load and
make sure the reading is 15 ± 1 Vrms.
2
Setting item #1 #2
Equalizer Music Music
Surround OFF OFF
BBE OFF -
Balance 0 0
AVL OFF OFF
Super Bass OFF -
Bass + - ON
Equalizer Music
Surround OFF
BBE OFF
Balance 0
AVL OFF
Super Bass ON