Goldstar MC-993A Guide

- 1 -
VSafety Precautions
1. It is safe to adjust after using insulating transformer between
the power supply line and chassis input to prevent the risk of
electric shock and protect the instrument.
2. Never disconnect leads while the TV receiver is on.
3. Don't short any portion of circuits while power is on.
4. The adjustment must be done by the correct appliances.
5. Unless otherwise noted, set the line voltage to 230Vac
! 10%,
50Hz.
VTest Equipment required
1. RF signal generator (with pattern generator)
2. DC Power Supply
3. Multimeter (volt meter)
4. Oscilloscope
5. Color analyzer
O
PIF (Picture Intermediate Frequency) Adjustment
1) Connect the measuring equipment to the Main Board as
shown in Fig.1.
2) Set RF frequency and output level of RF SIGNAL
GENERATOR as shown Table 1.
3) Turn off S1 and S3 and on S2.
4) Adjust L107 so that the DC voltage may be 2.5
! 0.1Vdc.
(Table 1)
OSECAM-L' Adjustment
NOTE : This adjustment should be performed after PIF
adjustment.
1) Turn on S1 and S3 and off S2.
2) Adjust VR102 so that the DC voltage may be indicated
2.5
! 0.1Vdc.
O
RF AGC (Automatic Gain Control) Adjustment
The RF AGC control (VR101) was aligned at the time of
manufacture for optimum performance over a wide range
conditions. Readjustment of VR101 should not be necessary
unless unusual local conditions exist, such as ;
1) Channel interference in a CATV system.
2) Picture bending and/or color beats, which are unusually due
to excessive RF signal input when the receiver is too close
to a transmitting tower or when the receiver is connected to
an antenna distribution system where the RF signal has
been amplified. In this case, the input signal should be
attenuated (with pad or filter) to a satisfactory level.
3) Picture noise caused by "broadcast noise" or weak signal.
If the broadcast is "clean" and the RF signal is at least 1mV
(60dBu), the picture will be noise free in any area.
Adjusting the VR101(RF AGC) control to one end of rotation
will usually cause a relatively poor signal to noise ratio;
Adjusting to the other end of rotation will usually cause a
degradation of over load capabilities resulting in color beats or
adjacent channel interference. For best results, adjust the
VR101 control while performing on all over local channels, or
the voltage at TP2 will be 2.3
! 0.1Vdc in RF level 65 ! 1dBuV.
IC101
TDA4474
TP1
JP7 IC05
IC102
5V
JP3
S1
S3
S2
JP5 Q106
4.7kΩ
100Ω
100Ω
24
7
11
15 VR102
1
0.01pF Signal-
Generator (B/G,D/K,I,L)
(SECAM-L')
JP1
L107
16
VR102
38.9MHz
34.25MHz
5V
Power-
Supply
V Multimeter or Oscilloscope
JP2
JP4
Test Point : TP1
Adjust : L107
Test Point : TP1
Adjust : VR102
Frequency
38.9MHz
34.25MHz
System
B/G,D/K/I,SECAM-L
SECAM-L'
Modulation
OFF
OFF
Output level
10mVp-p
10mVp-p
Adjust
L107
VR102
Main Board(Component side view)
Fig. 1 : Connection Diagram of Equipment for PIF Adjustment
ADJUSTMENT INSTRUCTIONS
Test Point : J209 or Observing Display
Adjust : VR101

- 2 -
OScreen Voltage Adjustment
NOTE: To enter SVC mode, press "OK" buttons on both TV
set and the Remote control at the same time.
1) Tune the TV set to receive a digital pattern.
2) Press MIX button on remote controller for Service to get
into the Screen Adjust Mode.
3) Adhere the Color Analyzer on the White window of CPT
face.
4) Adjust Screen Volume of FBT so that the luminance of
White window is 6.5
! 0.5ft/L.
OFocus Adjustment
NOTE: This adjustment should be performed after warming
up for 10 minutes.
1) Tune the TV set to receive a digital pattern.
2) Adjust the lower Focus control of FBT for the best focus of
vertical line B.
3) Adjust the upper Focus control of FBT for the best focus of
area A.
4) Repeat above step 2) and 3) for the best overall focus.
ODeflection Data Adjustment (Line SVC-1)
1. Preparation for Deflection Adjustment
1) At SVC mode, press the Yellow colored button.
If the Remote Controller doesn't have the Yellow button,
use the button under the Channel Down(PR U) button.
And then, deflection data adjustment OSD (SVC1 mode)
will be displayed.
2) Press Channel UP/DOWN button for desirous function
Adjustment.
3) Press Volume UP/DOWN button to adjust the data.
VL--(Vertical Linearity)
Adjust so that the boundary line between upper and lower half is
in accord with geometric horizontal center of the CPT.
VA--(Vertical Height)
Adjust so that the circle of a digital circle pattern may be located
within the effective screen of the CPT.
SC--(Vertical "S" correction)
Adjust so that all distance between each horizontal lines are to
be the same.
VS--(Vertical Shift)
Adjust so that the horizontal center line of a digital circle pattern
is in accord with geometric horizontal center of the CPT.
HS--(Horizontal Shift)
Adjust so that the vertical center line of a digital circle pattern is
in accord with geometric vertical center of the CPT.
EW--(Horizontal Width)
Adjust to that a digital circle pattern looks like exact circle.
EC--(East-west Parabola)
Adjust so that middle portion of the outermost left and right
vertical line looks like parallel with vertical lines of the CPT.
CRNU & CRNL
Adjust so that the vertical line at every 4 corners of the screen
looks like parallel with the vertical lines of the CPT.
ET--(East-west Trapezium)
Adjust to make the length of top horizontal line same with it of the
bottom horizontal line.
Test Point : RK (Red Cathode of CPT Board)
Adjust : Screen Control of FBT
Test Point : Observing Display
Adjust : Focus control of FBT
b
AB
Fig. 3
White window OSD
SCREEN ADJUST MODE
Fig. 2 SVC MODE for SCREEN Adjust

- 3 -
(Table 2)
OWhite Balance Adjustment.(LINE SVC 0)
NOTE : This adjustment should be performed after screen
voltage adjustment.
1) Tune the TV set to receive an 100% white pattern.
2) Press the Yellow button on remote controller in the SVC
Mode (press OK buttons on both TV set and remote
controller at the same time) then you can find On Screen
Display.
3) Press PSM (RED) button on remote controller. (Standard
picture)
4) Press PR+ or PR- button for desirous function adjustment.
5) Adjust VOL+ or VOL- button for CG:00E9.
6)
Adjust VOL+ or VOL-button in each status of "Rg--"/"Bg--" for
X=267
! 8, Y=273 ! 8 with color analyzer (color temperature
13,000
o
K).
(Table 3)
Menu
VL
VA
SC
VS
HS
EW
ET
EC
CRNU
CRNL
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0 ~ FFFF
0079
00C1
0091
0082
0092
011D
007F
0061
0083
0083
Range LG 29” Flat
Menu
CR
CG
CB
WR
WG
WB
0 ~ 511
0 ~ 511
0 ~ 511
0 ~ 511
0 ~ 511
0 ~ 511
00E9
00E9
00E9
0187
0187
0187
Range LG 29” Flat

OOPTION Adjustment (SVC MODE:OPTION-1,
OPTION-2, OPTION-3)
NOTE: When the EEPROM has been replaced, the Option data
should be restored as the function of individual system
and specification.
1) Press OK buttons on both TV set and Remote Controller at
the same time to get into SVC mode.
2) Press the Yellow button several times to find OPTION-1,
OPTION-2 and OPTION-3.
3) Input the correspond OPTION data referring to Table below
with the numeric buttons 0~9.
Table 1. OPTION 1 Function
Table 2. OPTION 1 CODE Data
- 4 -
EU
NON-EU
LOW STEP$RUSH
HIGH STEP$SLOW
Vol-
Curve
M-SYS
L-SYS
Woofer
H-Phone
EYE
I/II SAVE
Option Code
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Function Remark
No SAVE DUAL Sound Condition
SAVE DUAL Sound Condition
Without EYE
With EYE
Without Headphone Jack
With Headphone Jack
Squiter Amp.
Woofer Amp.
Standard Curve
Rushed Curve
Without NTSC-M
With NTSC-M system
Without SECAM L/L’
With SECAM L/L’
OPTION
Data I/II
SAVE EYE H-
PHONE Woofer M
SYS L SYS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
L
SYS
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Volume
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
OPTION
Data I/II
SAVE EYE H-
PHONE Woofer M SYS
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
Volume
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1

- 5 -
L
SYS
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
OPTION
Data I/II
SAVE EYE H-
PHONE Woofer M SYS
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
Volume
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
OPTION
Data I/II
SAVE EYE H-
PHONE Woofer M SYS L SYS
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Volume
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1

Table 3. OPTION 2 Function
Table 4. OPTION 2 CODE Data
- 6 -
OPTION
Data TOP TURBO D/K B/B DVD
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
VGA
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
OPTION
Data TOP TURBO D/K B/B DVD
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
VGA
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Without
To compensate the
Inclination of picuture
VGA
BB SYS
DK
CHINA
TURBO
TOP
TEXT(TOP=0)
Option Code
0
1
0
1
0
1
0
1
0
1
0
1
Function Remark
FLOP TEXT
TOP TEXT
W/O TURBO Picture & Sound
With TURBO Picture & Sound
Without D/K CHINA
With D/K CHINA
Without BB System
With BB System
Without VGA Mode
With VGA Mode
Without DVD(Y, Cr, Cb) Input
With DVD Input
DVD

Table 5. OPTION 3 Function
Table 6. OPTION 3 CODE Data
- 7 -
OPTION
Data Soft Wide TV Scart LNA
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
OSD
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
According to
Tool Outlook.
AV1
OSD
LNA
Scart
Wide
TV
Soft
Touch
Option Code
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
Function Remark
Use Normal Key Board
Use Soft Touch Key Board
4:3 TV
16:9 TV
Scart Input
Phone Input
Without LNA
With LNA
English Only
Eng+Chinese
Eng+French+Arabic+Urdu+Parsi
Eng+German+French+Italian+Spainish+Netherlandish
+Portuguese
Eng+Swedenish+Norwegian+Danish+Finish
Eng+Romanian+Polish+Hungarian+Czech+Russian
Reserved
Full
OPTION
Data Soft Wide TV Scart LNA
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
OSD
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5

- 8 -
OPTION
Data Soft Wide TV Scart LNA
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
OSD
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
OPTION
Data Soft Wide TV Scart LNA
116
117
118
119
120
121
122
123
124
125
126
127
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
OSD
4
5
6
7
0
1
2
3
4
5
6
7

RGB
Amplifier
IC681
TDA2615
IC601
MSP3410
IC101
TDA4474
(VIF/SIF)
IC501
VPC3215 IC503 CIP3250 IC504 MSM541222 IC507 DDP3310
IC203
TDA8601
IC202
TEA5114 IC3001 LB1645
(Tilt control)
FBT
DY
IC701
TPU305XX
(Teletext)
IC01
MI-COM
SMPS
H-Drive
IC831
5V regulator
IC651
TDA2615
IC605
TDA2822
AV1
AV2/SAV
TU101
TUNER
IC201
CXA2040Q
(AV S/W)
ICP3
TDA9160
ICP6
SDA
ICP5
SDA9187
Head phone
PC input
Component
RGB
AV3/SAV
Main speaker
Squiter
V-Deflection
amplfier
Dynamic
Focus
CPT
B+ (135V)
30V
IC833
12V regulator
IC833
8V regulator
30V
PIP PROCESS
100HZ PROCESS
RGB/YUV S/W
Audio Process
BLOCK DIAGRAM

TROUBLESHOOTING GUIDE
C834
R857
D805, D803, ZD804, Q801
3
Q04,Q851,Q852,Q853,IC802,IC804
8
41
IC01,IC301,FR440,FR441,
D407,D408. D406,FR436,Q804,Q805.
IC507
IC507.
8.0V
R405, D811, FR848.
Q401, Q402, T401.
D813,R811,R812,T403,Q402,L801.
75V
135V

FR459, FR901.
61
20~25, 28~29
IC503.10~17
IC503.
Q205, IC201.
29~30, 32~37 IC504.
IC504. Check the waveform
at pin 54~61 of IC507.
Check/Replace IC507,
Q502~Q510.
Check/Replace IC507.

Check the waveform
at pin 52, 60 of IC501.
Check/Replace
VGA01. Check the waveform at pin 31, 32, 33 of IC507.
NO NORMAL
Check/Replace
VGA01. Check/Replace IC507.
NO NORMAL
NO VGA
Check the voltage
at pin 44 of IC01.
Check/Replace
IC01. Check the waveform at pin 10~13 of IC203.
0V 5V
Check the waveform
at pin 6~8 of IC203. Check/Replace IC503.
NO NORMAL
Check/Replace
Q202, Q208, Q209. Check/Replace IC203.
NO NORMAL
NO COMPONENT

31V
FR852, D814.

FR848,D811,FR829,ZD103.
IC102, R110 .
61
19 IC201,Q203,Q204,IC204.
IC03

1, 6
19, 20 IC507.
FR440,FR441,D407,D408.
IC507, Q501, Q514. IC301, D301.
IC301.
PIN CUSHION
21 IC507.
IC507. IC401
IC401 R424.
Q404, Q405. D402.

Check the waveform
at pin 9 of P504B.
Check/Replace Q2001~Q2003,
IC2001,D2008~D2009.
NORMAL
IC507,Q511~Q513.
12 IC701.
2.4V
Q701.
6
IC701, X701.
35,36,37 IC507.
IC507.

Service Sheet of MC-993A P/N : 3854VA0061A-S1(1/2)
Date : 1999.7.23
Video
Y
C
Audio
Waveform

Service Sheet of MC-993A P/N : 3854VA0061A-S2(1/2)
Date : 1999.7.23

CPT
CONTROL POWER