687200Q
Service Manual
7-95
7.5.9 Light Prints
Initial Action
Ensure that the print density is set to the default value (3). Execute Diagnostic Mode 3, Print Density.
Procedure
1 Replace the paper in the paper tray. Problem solved.
Y: Use new paper (and ask the customer to keep paper stock in a dry place).
N: Go to step 2.
2 Inspect the Drum ground path shown below. The printer is grounded all through the ground path.
• Drum > Drum shaft pin > Plate Earth > HVPS > LVPS.
Y: Go to step 3.
N: Complete the Drum ground path.
3 Check the laser beam path from the Drum to the Laser Assembly for contamination or obstacle.
The laser beam path is contaminated or obstructed.
Y: Remove the contamination or obstacles.
N: Go to step 4.
4 The HVPS DB (DC) has faulty output voltage. Refer to 5.2.1.23 HVPS (Developer Bias AC)
Operation.
Y: Go to
RAP 7.4.24 HVPS Failure.
N: Go to step 5.
5 The Bias Transfer Roll (BTR) Assembly is contaminated.
Y: Replace the BTR Assembly.
N: Go to step 6.
6 Generate a test print and switch OFF the printer in the middle of the print cycle. Inspect the toner
image on the Drum surface. A complete toner image shows on the drum surface.
Y: Go to
RAP 7.4.24 HVPS Failure, and check if the BTR output is normal.
N: Install a new EP Cartridge.
Definition
The overall image density is lighter than normal, or extremely light.
PRINTER
PRINTER
Sample Image
Summary of Contents for DR N17
Page 1: ...DVHU 3ULQWHU 3 1 6HUYLFH 0DQXDO Code 687200Q 00 September 1999...
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Page 12: ...687200Q Service Manual 1 2...
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Page 24: ...3 2 687200Q...
Page 26: ...3 4 687200Q PL 1 Covers I S S 2 1 S S 6 S KL S 3 5 S S S 4 S S SAS301FA...
Page 28: ...3 6 687200Q PL2 Covers II wsm3 07 7 8 13 4 3 2 5 9 11 S 1 with 2 11 12 6 10 SAS302FE...
Page 30: ...3 8 687200Q PL 3 Paper Tray 3 2 7 6 5 4 8 S S S 1 with 2 S S SAS303FB...
Page 32: ...3 10 687200Q PL 4 Paper Transportation I...
Page 36: ...3 14 687200Q PL 6 Paper Transportation III 2 S S S S 1 1 with 2 S SAS306FC...
Page 44: ...3 22 687200Q PL 10 Electrical Module I with Top Cover 2 4 3 S S 1 SAS310FB 5...
Page 48: ...3 26 687200Q 3 2 6 4 5 1 PL 12 System Controller...
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Page 193: ...687200Q Service Manual 5 81 Figure 5 5 1 2 Printer Data Label and Serial Number Plate...
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Page 248: ...6 54 687200Q Notes...
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Page 366: ...8 4 687200Q Figure 8 1 1 1 2 Paper Tray SAS214F...
Page 369: ...687200Q Service Manual 8 7 Figure 8 1 3 1 2 Tray W D H SAS217F...
Page 421: ...687200Q Service Manual 9 21 Replacement Perform the removal steps in reverse order...
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Page 476: ...10 34 687200Q Notes...
Page 492: ...11 16 687200Q Figure 11 3 7 1 Top Cover Removal FRONT 1 2 3 4 J230 J230 J231 J231 SAS4CAFA...
Page 518: ...Spare parts catalogue 687200Q DP N17 WITH OPTION SPARE PARTS CATALOGUE FROM SERVICE MANUAL 1...
Page 521: ...3 4 687200Q PL 1 Covers I S S 2 1 S S 6 S KL S 3 5 S S S 4 S S SAS301FA...
Page 523: ...3 6 687200Q PL2 Covers II wsm3 07 7 8 13 4 3 2 5 9 11 S 1 with 2 11 12 6 10 SAS302FE...
Page 525: ...3 8 687200Q PL 3 Paper Tray 3 2 7 6 5 4 8 S S S 1 with 2 S S SAS303FB...
Page 527: ...3 10 687200Q PL 4 Paper Transportation I...
Page 531: ...3 14 687200Q PL 6 Paper Transportation III 2 S S S S 1 1 with 2 S SAS306FC...
Page 539: ...3 22 687200Q PL 10 Electrical Module I with Top Cover 2 4 3 S S 1 SAS310FB 5...
Page 543: ...3 26 687200Q 3 2 6 4 5 1 PL 12 System Controller...
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Page 556: ...Spare parts catalogue 687200Q A 1 GENERAL CODES INDEX DP N17...