PANASONIC TC-29P10N - TC-33P10N - HOW TO ENTER SERVICE MODE - HOW TO ENTER SELF CHECK MODE - ADJUSTMENTS - ERROR CODES DISPLAY

TO ENTER SERVICE MODE

• Press the button [VOL -] inside the door of the main unit while pressing the button [Recall ] on the remote control transmitter three times in a row (within 2 seconds).
• Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control to EXIT service mode.

After entering service adjustment mode, perform adjustment after making notes of the values for each item. The written values (data) differ according to the set. Using the notes value as a reference facilities adjustment.

The item OPT adjusmtment,  in the contents for service adjustment mode is for adjustment at the plant.  Stay away form this item, at it means adjustment of all items.

• Button (1)  for selection in forward direction.
• Button (2) for selection in reverse direction.
• When R, G, B-CUT, BRT, or S-BRT is selected, the screen becomes one horizontal line when button (5) on the remote control is pressed.  Even when BRT is adjusted, the value will not be memorized.
• After entering service adjustment mode, perform adjustment after making notes of the values for each item.
• The written values (data) differ according to the set.  Using the noted values as a reference facilitates the adjustment.
• The item [OPT ] (OPT adjustment) in the contents for service adjustment mode is for adjustment at the plant.  Stay away from this item, as it means adjustment of all items.
• When H-key (vertical pin keystone distortion) is adjusted, the vertical position changes, and V-POS (vertical position) must be adjusted.  However, when the vertical position is raised too much, the on-screen display no longer can be seen.
• The item [OPT ] (OPT adjustment) in the contents for service adjustment mode is for adjustment at the plant.  Stay away from this item, as it means adjustment of all items.
• After entering service adjustment mode, perform adjustment after making notes of the values for each item. The written values (data) differ according to the set. Using the noted values as a reference facilitates the adjustment.

VERTICAL POSITION ADJUSTMENT

1. Set the item [H-V ] (H-V adjustment) (omitted in the following) to [V-HET].
2. Adjust with the remote control buttons [VOL +/-] to a narrower vertical amplitude and confirm the vertical center of the image (crosshatch pattern).
3. Set to the item [V-POS].
4. Adjust with the remote control buttons [VOL +/-] so that the vertical center of the crosshatch pattern comes to the center of the screen.

VERTICAL AMPLITUDE [HEIGHT] ADJUSTMENT

• Set to the item [V-HET], set to "3F", and adjust by turning R464 so that the number of horizontal lines of the crosshatch pattern becomes 5.5 lines at the top and at the bottom.
• For adjustment of V-HET, keep "3F" fixed and adjust by turning R464. However, when adjustment of the vertical amplitude with R464 is not possible, adjust the value for [V-HET] in the range from 3A to 44 (hexadecimal).

VERTICAL LINEARITY ADJUSTMENT

• Set to the item [V-LIN].
• Adjust with the remote control buttons [VOL +/-] so that the interval between the lines of the upper half and the lower half of the crosshatch pattern becomes uniform.

VERTICAL 'S' SHAPE COMPENSATION ADJUSTMENT

• Set to the item [V-SCR].
• Adjust with the remote control buttons [VOL +/-] so that the grid size of the crosshatch pattern becomes the same at the center and at the top and the bottom.
• Perform the adjustments 6. to 9. Alternately until the line interval between the straight lines becomes uniform.

HORIZONTAL POSITION ADJUSTMENT

1. Set to the item [H-WID], narrow the horizontal amplitude with the remote control buttons [VOL +/-], and confirm the horizontal center.
2. Set to the item [H-POS].
3. Adjust with remote control buttons [VOL +/-] so that the horizontal center of the crosshatch pattern comes to the center of the screen.

HORIZONTAL AMPLITUDE [WIDTH] ADJUSTMENT

1. Return to the item [H-WID].
2. Adjust with the remote control buttons [VOL +/-] so that the number of vertical lines of the crosshatch pattern on the left and on the right becomes 7.2 lines each.

HORIZONTAL LINEARITY CONFIRMATION

• Confirm that the horizontal linearity is not unbalanced.  If it is unbalanced, switch S551 (H. CENT) and set to the best position.
• When the right side of the screen is shrunk, set S551 to the side of the terminal board, and when the left side of the screen is shrunk, set S551 to the side of the fly back transformer.
• When the balance is not too bad, leave S551 at the center.
• When S551 is not set at the center, perform horizontal position adjustment for 4:3 mode and for 16:9 mode.

SELF CHECK FUNCTION

When phenomena like “the power fails from time to time” or “the video/audio fails from time to time” can not be confirmed at the time of servicing, the self-check function can be used to confirm the occurrence and to limit the scope for the defective circuits.  Also, when “the power fails from time to time”, display of the color bar on the screen can be used confirm the occurrence and to limit the scope for the defective circuits.

• Display method and display position:  When display is desired.

Hold (OFF TIMER) on the remote control pressed and press [VOL - ] on the TV set.  (The reception screen switches to TV monitor.

• To return to normal display

When one of the buttons for channel selection etc. is operated, the display returns to the normal screen.

ERROR CODES

Display symbol	Phenomenon, condition	Treatment method
H10	No output of video and audio.	Exchange the tuner (TNR001).
H21	Audio stop. Surround function not effective.	Inspect the main board [A] IC2401 (audio compensation).
H30	No video and audio. Surround function not effective.	Inspect the rear terminal switching board [H] IC3001.
H34	No video. No raster. Color stop. No color synchronization. Wrong colors. Bad on-screen display. No horizontal/vertical synchronization.	Inspect the digital core board [DG] IC6601.
H36	No video. Color stop. Wrong colors. Bad on-screen display. No horizontal/vertical synchronization.	Inspect the video signal processing board [AG] IC301.
H55	The red bar is displayed momentarily and then the power is interrupted. The power signal lamp (red) flashes three times in intervals of 2.8 sec.	Detection of overcurrent (140V line), vertical output. Detection of 25 V line overcurrent, 25V line.
H56	The yellow bar is displayed for 0.5 sec., and then the power is interrupted. The power signal lamp (red) flashes twice in intervals of 3.3 sec.	“Power failure from time to time” because of the overcurrent (140V line), vertical output (+15V line).
H57	The green bar is displayed for 1 sec., and then the power is interrupted. The power signal lamp (red) flashes once in intervals of 3.8 sec.	“Power failure from time to time” because of the overcurrent (140V line), vertical output (+15V line).
H58	Abnormal power circuit. The power does not come up, and it is switched off after a few seconds.	Inspect the main 5V line.
H90	The memory gets lost.	Exchange the main board [A] IC1114 (memory).
H91	One horizontal line is not obtained at the time of servicing	Inspect the main board [A] IC1201 (expansion DAC).
H99	“No video from time to time” because of causes in the antenna~tuner~video circuit. *This also may be displayed when the antenna plug is disconnected or when a channel without a signal is received.	Inspect the tuner~video circuit.