Erratic Operation; Inoperative Drive Components - Epson EPL-N2050 Service Manual

EPSON EPL-N2050

3.3.2 Erratic Operation

Table 3-8. Erratic Operation
Step Actions & Questions
INITIAL ANALYSIS
Inspect the following componets:
• PWBA HKB MCU
• PWBA HVPS
1
• PWBA LVPS
Are they compatible with your printer version,
correctly installed, not damaged, deformed, or
contaminated?
2 Does the printer enter a print cycle?
Enter DIAGNOSTIC MODE MENU.
3
Can you enter the DIAGNOSTIC MODE MENU?
Does the printer RESET while it is making a test
4
print?
Install a new PWBA HKB MCU.
5
Does the erratic operation still occur?
Troubleshooting
Yes No
Replace the
Go to Step 2. problem
components.
Go to Step 3. Go to Step 4.
Replace the
Go to Step 5. PWBA HKB
MCU.
Go to
Table 3-45,
"Electrical Go to Step 5.
Noise," on
page 101.
Replace the Problem
PWB ESS. solved.
Troubleshooting by Printer Performance

3.3.3 Inoperative Drive Components

Table 3-9. Inoperative Drive Components
Step Actions & Questions
INITIAL ANALYSIS
Inspect the following componets:
• Gear Assy Drive
• Motor Assy Main
1
• PWBA LVPS
• PWBA HKB MCU
Are they compatible with your printer version,
correctly installed, not damaged, deformed, or
contaminated?
GEAR ASSY DRIVE
Use MAIN MOTOR TEST to check the Gear Assy
2
Drive function.
Does the Gear Assy Drive rotate smoothly?
MOTOR ASSY MAIN
Use MAIN MOTOR TEST to check the Motor
3
Assy Main function.
Does the Motor Assy Main function correctly?
Revision B
Yes No
Replace the
Go to Step 2. problem
components.
Replace the
Go to Step 3. Gear Assy
Drive.
Go to
Table 3-36,
Replace the
"Drive
PWBA HKB
Components
MCU.
Failure," on
page 95.
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