Adjustment; Electrical; Adj1. 1. 1 Max Setup; Adj1. 1. 2 Dc921 Atc Sensor Setup (Performed Only When Replacing The Atc Sensor) - Panasonic DP-C321 Service Handbook

2. 3 Adjustment

1. Electrical

ADJ 1. 1. 1 Max Setup
Purpose To perform the setup of ATC Sensor and check the output of ATC/ADC sensor to
provide stable image quality anytime according to the environment and changes over time.
Also, provides the Change/TRC Adjust function of Tone Up/Down ADC Control Standard Value
as a tool of resolving trouble.
Perform the MAX Setup by the following steps:
1. DC921 ATC SENSOR SETUP (Performed only when replacing the ATC Sensor)
(Refer to ADJ1. 1. 2)
2. DC922 TONE UP/DOWN (Performed only the ATC output check in ordinary
practice) (Refer to ADJ1. 1. 3)
3. Check DC934 ADC Output. (Refer to ADJ1. 1. 4)
4. DC924 TRC ADJUST (Performed only when the customer requests) (Refer to
ADJ1. 1. 5)
For a proper gradation correction, refer to the "Gradation Correction" in User Guide
supplied with the Main Processor.
2-3
ADJ1. 1. 2 DC921 ATC Sensor Setup (Performed only when replacing the ATC
Sensor)
Purpose When replacing the ATC Sensor or Developing Unit, set the correction value [ATC
Correction Coefficient][ATC Correction Offset] (Neither appears on UI) to calibrate every sensor.
• Entering/determining characteristic values installed in each sensor [Sensitivity Slant of Each
Sensor] [Output of Each Sensor in Standard TC] sets automatically correction value [ATC
Correction Coefficient] (DC131 [752-69:Y, 70:M, 71:C, 72:K]), [ATC Correction Offset]
(DC131 [752-73:Y, 74:M, 75:C, 76:K]).
• Outline of Characteristic Values
Items
Standard TC Output Initial Value (Y, M, C, K)
Sensitivity Slant Initial Value (Y, M, C, K)
Reference The unit of "Standard TC Output Initial Value" is [V] and thousand-fold value.
The unit of "Sensitivity Slant Initial Value" is [V/TC] and ten thousand-fold value.
Enter the characteristic value attached to each sensor.
Convert the value attached to the ATC Sensor in the "Comparison table" and enter it.
This Diag is only for entering characteristic value of the ATC Sensor and does not
operate the M/C.
Input Number Setup Range
Input Value 4 0~1023
Input Value 4 0~32767
Chapter 2 Maintenance