Panasonic TX-29RX20T Service Manual ▷ View online
1.6. GP41Z Chassis Block Diagram
ONLY FOR MODEL WITH
5TH HARMONIC COIL
CRT
defl.
coil
CRT
DRIVE
L
MAIN
POWER
SWITCH
SW
PVP
IC1801
R/G/B
SCL SDA
CVBS IN
REAR INPUTS
AV1 : V/L/R AV3 : YUV/V/L/R
VCT-IF
IC601
V_IN
CVBS OUT
MON_OUT
R G B
R/G/B
MON_OUT
V/L/R
EEPROM
IC1101
SCL SDA
A_IN
IF
H
A
AUDIO OUT
V
SPEAKER
AUDIO
AMP
IC2301
V OUT
TUNER
PP
GEOMAGNETIC
GEO
SIDE INPUTS
AV2 : V/L/R
G
PANEL KEY
K
REMOTE RECEIVER
& LED
V
LINE FILTER
P
PIP MODEL
H OUT
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TX-29RX20T
2 Factory Mode Setting
2.1. Set to Factory Mode
1. Press the factory set button on the remote and the volume down (front control) button together, then the white pattern will
appear. In case of releasing the remote button, the black pattern will appear or in other case the volume bar (Volume down)
appears.
appears.
2. Turn the power off and on, then set to aging mode.
3. Press any button on the remote or on the TV’s front panel.
3. Press any button on the remote or on the TV’s front panel.
Reset to aging mode (white pattern) and “CHK” will be displayed on screen.
When there is no signal in this factory mode, it will change to aging mode.
Aging set to aging mode method -- POWER OFF
When there is no signal in this factory mode, it will change to aging mode.
Aging set to aging mode method -- POWER OFF
→ ON
2.2. Operation on Aging mode
1. White pattern appears, when reset start (POWER ON).
2. Press the factory set button, so that change to screen color.
2. Press the factory set button, so that change to screen color.
White
→ Black → Red → Green → Blue
2.3. Set to Normal mode
1. Press SELF CHECK MODE button or press the volume down button on front control, together press the off timer button on the
remote.
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TX-29RX20T
3 Service Mode Adjustment
3.1. Service Mode Access
1. Set the timer ON.
2. Press remote’s RECALL (
2. Press remote’s RECALL (
) and panel’s volume down key simultaneously to enter SERVICE 1.
3.2. Service Mode 1 Controls
Key 3/4
Previous/Next Service 1 Item
Key 8/9
Adjust user Brightness (-/+)
Program up/down
Program position up/down
Volume +
Increment of selected item
Volume -
Decrement of selected item
OK
Store/Save selected item
Normalize
Exit service mode
3.3. Service Mode 2 Controls
• To enter SERVICE 2; press channel key ‘1’ in SERVICE 1 entry screen.
Key 3/4
Previous/Next Service 2 Item
Key 8/9
Toggle for option bit 0-7
Program up/down
Program position up/down
Volume +
Increment of selected item
Volume -
Decrement of selected item
OK
Store/Save selected item
Normalize
Exit service mode
NOTE:-
• Service Mode 2 options bit refer to each model front cover spec.
3.4. Service Mode 3 Controls
• To enter SERVICE 3; press channel key ‘1’ in SERVICE 2 entry screen.
Key 3/4
Previous/Next Service 1 Item
Program up/down
Program position up/down
Volume +
Increment of selected item
Volume -
Decrement of selected item
OK
Store/Save selected item
Normalize
Exit service mode
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TX-29RX20T
4 Service Hints
4.1. 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 Fig. 2.
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 Fig. 2.
Fig. 2
4.2. Adjustment for White Balance
Preparation:
1. Receive the white balance pattern and aging should be 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.
5. Enter service mode “1”.
Note:
1. Receive the white balance pattern and aging should be 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.
5. Enter service mode “1”.
Note:
1. In white balance mode, key 8 (REMOTE) & key 9 (REMOTE) can be used to adjust sub bright.
2. Press “OK” after white balance adjustment to store the data.
2. Press “OK” after white balance adjustment to store the data.
Adjustment of Low Light
1. Adjustment Sub Bright, so that Y = 6.5 ± 1.0 nit.
2. Adjustment R-CUT OFF, so that X = 0.241 ± 0.005 nit.
3. Adjustment G-CUT OFF, so that Y = 0.242 ± 0.005 nit.
1. Adjustment Sub Bright, so that Y = 6.5 ± 1.0 nit.
2. Adjustment R-CUT OFF, so that X = 0.241 ± 0.005 nit.
3. Adjustment G-CUT OFF, so that Y = 0.242 ± 0.005 nit.
Adjustment of High Light
1. Adjustment Sub Bright, so that Y = 150 nit.
2. Adjustment R-Drive, so that X = 0.263 ± 0.003 nit.
3. Adjustment B-Drive, so that Y = 0.261 ± 0.003 nit.
1. Adjustment Sub Bright, so that Y = 150 nit.
2. Adjustment R-Drive, so that X = 0.263 ± 0.003 nit.
3. Adjustment B-Drive, so that Y = 0.261 ± 0.003 nit.
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TX-29RX20T
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