Canon FY8-23AV-000 manual PC420/430/FC220 General Timing Chart A4, 2 copies

Page 52

PC420/430/FC220 General Timing Chart (A4, 2 copies)

	Power switch
	ON
Sequence	STBY
Copyboard

1Main motor (M1) Document position sensor

2(Q902)

3Copyboard(SL2) drive solenoid

4Scanning lamp (LA1-LA8)

5Fixing heater (H1)

6Primary AC bias

7Primary DC bias

8Developing AC bias

9Developing DC bias

10Transfer

11Pick-up sensor (Q131)

12Pick-up solenoid (SL1)

13Delivery sensor (Q801)

1 sec

Copy paper inserted

INTR

COPY

LSTR

STBY

CBRV STOP

CBFW

CBRV

CBFW

CBRV

STOP

-240V		-625V
-400V		-120 to -560V
*	**	*	*

*Cleaning mode.

**Measurement mode.

A-2

Image 52

Contents Service Handbook Copyright 1998 Canon INC Contents Troubleshooting Malfunctions Self Diagnosis Page Durables Periodically Replaced PartsPeriodical Servicing Storing Sealed Cartridges 1D Temperature/Humidity Specifications2D Transportation Storing and Handling Unsealed Cartridges Reference Image Adjustment Basic Procedure Pre-ChecksPoints to Note Mechanical GlassAdjusting the Intensity VR604 Electrical2B PC400/FC200 Adjusting the AE Mechanism VR602, VR603 JP607 JP605 JP604 Control panel PCB Screwdriver Standards and Adjustments Site Environment Making Initial ChecksChecking the Documents Checking the Feeding Assembly Checking the Lens Array for DirtChecking the Transfer Charging Roller Checking the Copy PaperImage Troubleshooting Others Image Troubleshooting Samples of Image Faults Troubleshooting by Image Fault YESCopy is foggy overall Back Replace the cartridge Is the problem corrected? Copy has white spots cross feed direction Back of the copy is soiledCopy has faulty fixing Copy is foggy cross feed direction Copy has a blurred imageCopy has poor sharpness focus Copy is blank Copy is solid blackImage Troubleshooting Troubleshooting Malfunctions Self diagnosis PC400/FC200Copyboard Does the copying operation start AC power is absent Pick-up fails Scanning lamp fails to go onMain motor fails to rotate Copyboard fails to moveAt time of jam Paper feeding normallyFixing heater fails to operate Copy Paper Jams Pick-Up Assembly Separation/Feeding AssemblyFixing/Delivery Assembly Double Feeding Feeding FaultsWrinkles Arrangement and Functions of Electrical Parts Sensors and SolenoidsSwitches Lamp, Heater, Motor, and Others Printed Circuit Board PCB Variable Resistors VR and Check Pins by PCB DC Controller/DC Power Supply PCBControl Panel PCB PC400/FC200 Self Diagnosis Self Diagnosis General Timing Chart PC420/430/FC220 General Timing Chart A4, 2 copies Signals/Abbreviations List SignalsAbbreviations General Circuit Diagram PC420/430/FC220 General Circuit Diagram Special Tools Table Solvents/Oils Table Specifications LTR/A4 LGLNVD Prepared by This publication is printed on 70% reprocessed paper