Panasonic TC-21GX30P User manual

Power
Source : AC AUTO 110-240V, 50/60 Hz
Power Consumption : 58W
Aerial Impedance : 75Ωunbalanced
Coaxial type
Receiving System : 17 Systems
Receiving Channels :
VHF
2-13(U.S.A Standard)
UHF
14-69(U.S.A Standard)
CATV
1-125(U.S.A Standard)
Audio
Terminal :
DVD
Y1.0 Vp-p, 75Ω
PB 0.7 Vp-p, 75Ω
PR 0.7 Vp-p, 75Ω
AV
1, 2
Video In 1 Vp-p, 75Ω
Audio In Approx. 0.5V, 47kΩ
Monitor
Out
© 2007 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TC-21GX30P
GL1 Chassis
Video Out 1 Vp-p, 75Ω
Audio Out Approx. 0.5V, 1kΩ
High Voltage : 27.5kV ±1.5
at zero beam current
Picture Tube : A51LYZ395X65
50.5cm (21 inches)
Measured diagonally,
90° deflection
Audio Output : 5W + 5w = 10W
Dimensions : Height : 472 mm
Width : 598 mm
Depth : 479 mm
Mass : 22.5 kg (Net Wt.)
Specifications are subject to change without notice.
Mass and dimensions shown are approximate.
Colour Television
Specifications
ORDER NO. MTV0701517CE

1.5. GL1 Chassis Block Diagram
GL1 BLOCK DIAGRAM
Antenna
TUNER
SAW
Rear Inputs
AV 1 : V / L / R
Front Inputs
AV 2 : V / L / R
YUV YUV
CVBS4
CVBS2
IF
V
H
V OUT
H OUT
R
G
B
R
G
B
CRT
defl.
coil
MONITOR
OUT
SDA SCL
Audio Out Mon Out
AUDIO
AMP
IC2302
IC601
UOC
EEPROM
IC1103
IC851
5V & 8V
IC801
T801
IC880
3.3V
PRIMARY
LIFE CCT
SPEAKER
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TC-21GX30P

2 Service Hints
2.1. Service Position for E-Board
1. Remove the back cover.
2. Stand the TV set as shown in Fig. 2.
3. Remove the A-Board from the TV set by pulling the main board out as shown in Figure 2.
Fig. 2
2.2. Factory Mode Adjustment
1. Adjustment.
a. Set Timer ON (30 minutes)
Press remote’s RECALL & panel’s vol down key simultaneously to select service mode.
b. CHK should appear on right side of TV screen.
After few seconds CHK 1 should appear on right side of TV screen.
NOTE :
To move from CHK 1 to CHK 2 mode, etc, please follow below rotation:-
c. CHK 1
Press digit key “4” to move option mode forward.
Press digit key “3” to move option backward.
The function rotation will be as follows :-
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TC-21GX30P

d. After selecting the required option mode press Vol up / Vol down to adjust correct option. OSD will change to RED colour.
Press digit “0” to memorize data.
e. CHK2
Press digit key “2” to move forward to CHK2.
The function rotation will be as follows:-
f. Press digit key “4” to move forward from Colour ------> Sub-Colour, etc.
Press digit key “3” to move backward from Sub-Colour ------> Colour, etc.
g. Press volume up / volume down to adjust setting.
h. Press digit key “5” to make the AKB OFF (Blue OSD) - first time.
Press digit key “5” to make the AKB On (White OSD) - second time.
i. CHK3
Press digit key “2” to move forward to CHK 3.
The function rotation will be as follows:-
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TC-21GX30P

j. Press digit key “4” to move forward from V-SLOPE ------> V-SHIFT
Press digit key “3” to move backward from V-SHIFT ------> V-SLOPE
k. Press volume up / volume down to adjust required setting.
l. CHK4
Press digit key “2” to move forward to CHK 4.
The function rotation will be as follows:-
m. Press digit key “4” to move forward from R-CUT ------> G-CUT
Press digit key “3” to move backward from G-CUT ------> R-CUT
n. After selecting the required mode, press volume up / volume down to adjust required setting.
o. Press digit key “5” to make the AKB OFF and H-Line mode - first time.
Press digit key “5” to make the AKB ON and Normal picture - second time.
p. After finish adjustment, press Power ON / OFF button on remote control to go to normal TV mode.
2. HOW TO CHANGE CHANNEL BY I2C BUS CONTROLLER
a. Short FA1 and FA2
b. Select Slave address ‘70H’, Sub-address ‘43H’ for RF AGC.
*Example:
Slave Address = 70H’, Sub-Address = 43H’
Data = 80H’ = Center
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TC-21GX30P

2.3. Adjustment for White Balance
Preparation:
1. Receive the white balance pattern and aging should have been performed over 30 minutes.
2. Set the picture menu to DYNAMIC NORMAL.
3. Degausse the CRT face.
4. Fix the CRT colour analyzer receiver unit to CRT face.
Adjustment of Low Light.
1. Adjustment Sub Bright, so that Y = 6.3 ± 1.0 nit.
2. Adjustment R-CUT OFF, so that X = 0.233 ± 0.015 nit.
3. Adjustment G-CUT OFF, so that Y = 0.235 ± 0.015 nit.
Adjustment of High Light
1. Adjustment Sub Bright, so that Y = 150 nit.
2. Adjustment R-Drive, so that X = 0.262 ± 0.010 nit.
3. Adjustment G-Drive, so that Y = 0.264 ± 0.010 nit.
2.4. Adjustment for CRT CUT OFF
Preparation:
1. Connect the oscilloscope probe to TPL5.
2. Screen VR min.
3. Set the data Sub Bright, Bright.
4. In service Mode at “Bright” dac press [5] in factory mode to enter vertical line and adjust by volume down or up button.
5. Adjust “Screen VR” until 1-H Line appears.
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TC-21GX30P

2.5. Adjustment Procedure
2.5.1. +B Voltage
Item / preparation
1. Operate the TV set.
2. Set control as follows :
Brightness ........... minimum
Contrast ............... minimum
Adjustment procedure
1. Confirm the DC voltage at the indicated test points, as follows :
TPA 10 : 141 ± 1.5V
TPA 12 : 3.3 ± 0.5V
TPA 09 : 5 ± 1V
2.5.2. High Voltage
Item / preparation
1. Receive the crosshatch pattern.
2. Set to 0 Beam.
Screen VR .......... minimum
Contrast .............. minimum
Adjustment procedure
1. Connect a DC voltage meter to TPA 10 and confirm the +B voltage is 141.0 ± 1.5V.
2. Connect a high frequency voltmeter to heater and confirm that voltage reads 6.3 ± 0.24 (VRMS).
3. Normalize the brightness and contrast.
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TC-21GX30P

4.2. L Board
4.2.1. L Board (1/3)
<1A>
<2A>
<3A>
<4A>
<5A>
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TC-21GX30P

4.2.2. L Board (2/3)
<1B>
<2B>
<3B>
<4B>
<5B>
<6B>
<1A>
<2A>
<3A>
<4A>
<5A>
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TC-21GX30P