Sony PLM-A55E Service Manual

Also see for PLM-A55E: Using instruction Operating instructions

Contents

– 29 –[B Gain Adjustment]Note: The view angle correction must be turned off.Before this adjustment, the Contrast Adjustment must be finished.Condition:Input signal Chroma signal, and color bar signal with burstsignal turned offMeasurement point RG-46P board CN404 pin 4 and pin 6Measuring equipment OscilloscopeAdjustment page DAdjustment address 22Specification value ± 0.05 VConnection:Adjustment Procedure:(1) Select EXT. VIDEO AUDIO mode, and picture and tone qual-ity standard setting. (See page 22)(2) View angle correction OFF: Connect CN404 pin 2 (EAC OFF)and pin 1 (GND) on the RG-46P board.(3) Connect CH1 of oscilloscope to the CN404 pin 4, and CH2to the CN404 pin 6 on the RG-46P board.(4) Set (or confirm) data: 01 to page: 1, address: 00.(Cancel D page protect)(5) On page: D, address: 22, change data with the PLAY and STOPbuttons and press the PAUSE button to write data so that adifference between D' level of waveform on the CH2 of os-cilloscope and D evel (D level of Contrast Adjust-ment) onthe CH1 satisfies the specification value.Adjustment and Adjustment Parts: RG-46P board (see page 33)D'2H[R Brightness Adjustment]Note: The view angle correction must be turned off.Before this adjustment, the Contrast Adjustment must be finished.Condition:Input signal Chroma signal, and color bar signal with burstsignal turned offMeasurement point RG-46P board CN404 pin 4 and pin 8Measuring equipment OscilloscopeAdjustment page DAdjustment address 27Specification value ± 0.05 VConnection:Adjustment Procedure:(1) Select EXT. VIDEO AUDIO mode, and picture and tone qual-ity standard setting. (See page 22)(2) View angle correction OFF: Connect CN404 pin 2 (EAC OFF)and pin 1 (GND) on the RG-46P board.(3) Connect CH1 of oscilloscope to the CN404 pin 4, and CH2to the CN404 pin 8 on the RG-46P board.(4) Set (or confirm) data: 01 to page: 1, address: 00.(Cancel D page protect)(5) On page: D, address: 27, change data with the PLAY and STOPbuttons and press the PAUSE button to write data so that adifference between E' level of waveform on the CH2 of os-cilloscope and E level (E level of RGB Brightness Adjust-ment) on the CH1 satisfies the specification value.Adjustment and Adjustment Parts: RG-46P board (see page 33)Ch1 Ch2CN404 pin 8(R OUT)CN404 pin 1(GND)RG-46P BoardOscilloscope(DC range)CN404 pin 4(G OUT)CN404 pin 1(GND)2HE'Ch1 Ch2CN404 pin 6(B OUT)CN404 pin 1(GND)RG-46P BoardOscilloscope(DC range)CN404 pin 4(G OUT)CN404 pin 1(GND)