LG MT-42PZ10 Service Manual page 10

* Output of Power Supply = DC 5V
* Oscilloscope range = set 0.5V/div., 5msec/Div.(using scope)
V Multimeter or Oscilloscope
ST-BY 5V:P001
TDA4474
5V
TP112(IF VCC)
24
TP103
Power-
X106
Supply
5V
(VCO)
4.7 Kohm
VR101
S3
16
Q110
TP111
S2
(STB MAIN)
100 ohm
6-2. Adjustment 38.9MHz IF(B/G, D/K, I, L, M)
(1) Input the signal of the signal generater(38.9MHz) to
TP105(IC102 pin 7) through 0.01uF(103) capacitor.
(2) S1 : OFF, S2 : ON, S3 : OFF
(3) Adjust voltage of the TP103 to 2.5
X106.
6-3 Adjustment L VCO(Adjustment
SECAM-L ) --> Only SECAM L model
(1) After changing the signal of the signal generater to
34.25MHz, input the signal to TP102(IC102 pin 11) through
0.01uF(103) capacitor.
(2) S1 : ON, S2 : OFF, S3 : ON
(3) Adjust voltage of the TP103 to 2.5
VR101.
7. Adjustment AGC
7-1 Preparation for Adjustment
(1) Connect the signal of PAL-B/G 05ch. to Antenna jack.
(2) Connect Multi meter to point(J150) of AGC adjustment.
7-2 Adjustment
Adjustment the voltage of Multi meter to 2.4
changing VR102.
8. OPTION TABLE
8-1 Funtion of Line Service
(1) • Enter to SVC mode by using SVC button on the remote
control.
•To enter to the SVC mode,press the "OK" button on RZ-
BA10 local key ond "OK" button on the remote control
simultaneously.
• In MZ-42PZ10 only,press the "INPUT" button and "OK"
button on remote control to enter to SVC mode.
(2) Select the item by using the Quick View(Yellow) button.
(3) After adjusting,restore adjusted item in EEPROM by using
"OK" button and use the CYAN button to cancel the
adjusted condition.
(4) Select the program directly and input the data of option by
using the number button.
All manuals and user guides at all-guides.com
1
IC102
0.01uF
7 TP105
38.9MHz
(B/G,D/K,I,L)
34.25MHz
11 TP102 (SECAM-L')
VR102(AGC)
13
TP110
15
100 ohm
S1
0.1V by adjusting
0.1V by adjusting
0.1V by
(5) Line SVC-0(Hitrun&W/B Adj.mode)=> VSC EEPROM
• H/T RUN:OFF,WHITE,RED,GREEN,BLUE,OFF
• A/C SRT:Auto Cutoff
• R/G/B Fine 16,R/G/B Gain 3,R/G/B Cutoff 100
(6) Line SVC-1(Phase&Position Adj.mode)=> VSC EEPROM
• Phase 15,H-Pos 32,V-Pos 32,Auto Position
(7) VSC CXA2101 Adj.mode)=> VSC EEPROM
SUB-COL 0
BC 7
SUB-HUE 14
RC 7
SUB-SHP 3
RG 10
GG 10
BG 10
GYR 10
SUB-CON 3
SUB-BRI 54
(8) STB CXA2101 Adj.mode)=> STB EEPROM
SUB-COL 0
BC 7
RC 7 SUB-HUE 7
SUB-SHP 0
RG 31
GG 31
BG 31
GYR 10
SUB-CON 3
SUB-BRI 54
(9) SOUND Adj.mode => VSC EEPROM
FP
NP
SP
SC VOL
STB VOL
(10) Option 1 Adj.mode => VSC EEPROM
• Select it directly by using Teletext Size button.
System 1 0:BG/I/DK 1:BG/I/DK/L 2:BG/I/DK/M
Aus/China 0 0:CCIR BG/OIRT DK
1:Australia BB/China DK
ACMS 1 0:
1:Channel Name Labeling
TOP 1 0:TOP=>SIMPLE
1:TOP
A2MONO 0 0:Sound treatment normally
1:Don't recognize the Stereo(NICAM
treatment normally) => A part of AFRICA
TXT LAN 6
Language 1 0:E only,1:EU5,2:NON,3:China,4:Arabic
5:Parsi,6:All
- 10 -
GYB 5
GMM 5
BLK 15
CTI 0 PRE 1
RYR 6 DCT 1
DPI 2
RYB 9 VTC 2
HWI 2
GYB 5
GMM 0
BLK 15
CTI 1 PRE 1
RYR 6 DCT 0
DPI 0
RYB 9 VTC 2
HWI 2
28
120
25
74
115
DCO 1
HDT 0
SFO 1
DCO 0
HDT 0
SFO 1
CON 25
BRI 31
COL 31
HUE 31
SHP 35