Panasonic CT-36SX31UE, CT-36SX31CE Service Adjustments Mechanical Controls, Clock Adjustment S07

Service Adjustments (Electronic Controls, cont.)

Clock Adjustment (S07)

Preparation:

Connect the frequency counter to TPS1 (IC001

pin-13) and cold ground ( ).

Note: Frequency Counter probe capacitance should be 8pF or less.

Procedure:

1.Measure TPS1 (IC001 pin 13) for the frequency of the waveform and record the reading.

Note: Pin 13 measurement must have at least four digits of resolution following the decimal point. Example: 000.0000

2.Place the Receiver into Serviceman Mode for making electronic adjustment, select the Clock Adjustment DAC (S07).

3.Calculate and set S07 based on the following formula:

S07 = 128 + {873.90625 – pin13[Hz]}968

Figure 38. Set Turned ON

S07 = 128 + {218.47656 – pin13[ Hz]}3873

Figure 39. Set Turned OFF

Note: Pin 13 measurement will not change regardless of the value stored in S07.

Service Adjustments (Mechanical Controls)

Focus (part of T551)

This adjustment is to make the picture clear

Preparation:

Connect a Signal generator and select a dot pattern.

Procedure:

Adjust the FOCUS controls to obtain the sharpest and clearest dot pattern.

a.Adjust VF1 to minimize width on vertical lines on corners.

b.Adjust VF2 to minimize width on horizontal lines on corners.

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