Table of Contents
Advertisement
Service Adjustments
SOUND LEVEL ADJUSTMENT
1. Connect a signal generator to TP-301(- side of C3411)
on the Main Board and the ground. Signal output=300Hz,
150mVrms.
2. Connect a DC Volt-Meter to TP-317( pin-38 of IC3401)
and the ground.
3. Ground pin-2 of IC201 with the jumper lead.
4. Switch the TV set on.
Press and hold the MENU button on the TV set, and press
"3" button on the remote control transmitter to enter to the
service mode.
INPUT LEVEL
HI SEPARATION
LOW SEPARATION
ADJUST: - /+
CHOOSE:
EXIT : MENU
5. Adjust voltage to become DC 500mVrms±10mVrms by
pressing the VOLUME(+/-) button on the remote control or
TV set.
6. To exit from the service mode, press the MENU button.
STEREO SEPARATION ADJUSTMENT
1. Connect an oscilloscope:
Probe-A to TP-317 (pin-38 of IC3401) and the ground.
Probe-B to TP-318 (pin-39 of IC3401) and the ground.
2. Turn on the TV set, and receive the multi sound programme.
3. Press and hold the MENU button on the TV set, and
press
"3" button on the remote control transmitter to enter the
service mode.
4. Select "LOW SEPARATION" by pressing the CHANNEL
UP/DOWN button on the remote control or TV set.
INPUT LEVEL
HI SEPARATION
LOW SEPARATION
ADJUST: - /+
CHOOSE:
EXIT : MENU
5. Adjust level of 300Hz at TP-317 (pin-38 of IC3401) to
become minimum level by pressing the VOLUME(+/ -)
button on the remote control or TV set.
08
21
34
08
21
34
MAIN BOARD
CH -
CH -
MENU
MENU
SW1902
K1921
SW1901
D1902
C693
R029
C663
JW4
C654
C3416
C3412
C3408
D654
C035
J027
C658
D653
C657
C691
D671
C643
R672
R669
R653
R652
C681
R103
TP +B +130V
D464
D465
R426
C468
R467
Q461-H1
L461
R480
C462
C468A
VR462
L462H1
JP441
C441-H1
Q461-H2
L441-H1
TP-317(pin-38 of IC3401)
TP-318 (pin-39 of IC3401)
JW1
3
1
KL
C3401
C042
TP-317(R)
Minimum leakage
300Hz
-14-
K1002A
K1002
R1001
D1011
C1021
C1011
JW1
JP3402
KL
1
3
JP3401
C3432
C3418
IC3401
C3401
C042
MTS
(SOLDER SIDE)
C3413
C031
C004
C032
J122
J151
(MONO)
10
1
IC001
AUDIO AMP.
JP006
IC002
13
J008
J114
1
AUDIO AMP.
JP003
JP004
(STEREO)
J115
JP007
Q651
J116
R656
J066
JW6
JP503
J081
D655
R243
D646
Pin-2 of IC201
J068
D201
R466
J040
J053
5
J036
D203
C467
C540
D202
R465
J106
J059
VR463
C464
R462
IC501-H4
C210
IC501-H2
C202
R472
27
20
R471
J003
R469
R468
IF /VIDEO/CHROMA/DEF.
J037
JW5
C518
28
30
X211
JP3405
JP3402
C3432
IC3401
IC3401
C3413
MAIN BOARD
(Solder side)
C3411
IC802
MEMORY
X801
8
5
L84
1
4
C805
J089
KX
(
J043
5
1
J070
J071
J072
1
KP
X161
J156
10
5
1
IC201
41
51
54
C245
JW4
C3416
C3412
C3408
Advertisement
Table of Contents
