Canon NP6218 Manual De Usuario

PROCESSES .....................................4-1
A. Outline ...........................................4-1
B. Basic Sequence of Operations 

(image formation system)..............4-3

C. Controlling the Scanning Lamp .....4-4

1. Outline ......................................4-4
2. Turning On and Off the 

Scanning Lamp ........................4-5

3. Pre-Heating Control 

(scanning lamp)........................4-5

4. Sequence of Operations 

(scanning lamp pre-heating 
control; AE, A4, continuous, 
2 copies)...................................4-5

5. Controlling the Intensity of the

Scanning Lamp (FL1)...............4-7

6. Controlling the Fluorescent 

Lamp Heater.............................4-8

7. Fluorescent Lamp Automatic ...4-9
8. Fluorescent Lamp Protection

Mechanism ...............................4-9

D. Controlling the Primary Charging 

Roller Bias .....................................4-10
1. Outline ......................................4-10
2. Turning On and Off the Primary

Charging Roller Bias ................4-11

3. Controlling the Primary 

Charging Roller Bias to a 
Constant Voltage ......................4-11

4. Switching the Primary Charging

Roller Bias Application Voltage 
Level .........................................4-11

5. Application Voltage Level 

(APVC) for the Primary 
Charging Roller and Scanning 
Lamp On Voltage Level 
Automatic Correction ................4-12

E. Controlling the Transfer Roller Bias...4-13

1. Outline ......................................4-13
2. Turning On and Off the 

Transfer Roller Bias ..................4-15

3. Controlling the Transfer Bias 

to a Constant Voltage ...............4-15

4. Controlling the Transfer Bias 

Voltage Level Correction 
(ATVC control) ..........................4-15

5. Current Limiter Circuit 

(transfer bias) ...........................4-15

6. Current Limiter Circuit 

(cleaning bias) ..........................4-15

F. Controlling the Static Eliminator 

Bias................................................4-16

BASIC OPERATION ...........................3-1
A. Varying the Reproduction Ratio ....3-1

LENS DRIVE SYSTEM ......................3-1
A. Outline ...........................................3-1
B. Lens Motor Drive Circuit................3-3

1. Keeping the Lens Motor 

Stationary .................................3-3

2. Driving the Lens Motor .............3-3

C. Basic Sequence of Operations 

(lens drive system; non-Direct) ......3-4

SCANNING DRIVE SYSTEM.............3-5
A. Driving the Scanner.......................3-5

1. Outline ......................................3-5
2. Relationship between the 

Scanner Sensor and Signals....3-6

3. Basic Sequence of 

Operations (scanner)................3-6

4. Driving the Scanner Motor .......3-7
5. Scanner Operations in Page

Separation Mode (non-AE, 
page separation, A4, 2 copies)..3-8

DISASSEMBLY AND ASSEMBLY ......3-9
A. Scanner Drive Assembly ...............3-9

1. Detaching the Scanner Drive 

Motor ........................................3-9

2. Detaching the Scanner Cable ..3-10
3. Assembling the Mirror 

Position Tool .............................3-12

4. Routing the Scanner Cable ......3-13
5. Adjusting the Position of the 

Mirrors (optical length of No.
1, 2, and 3 mirrors)...................3-16

6. Cleaning the Scanner No. 6 

Mirror ........................................3-17

B. Lens Drive Assembly.....................3-18

1. Detaching the Lens Drive 

Motor ........................................3-18

2. Routing the Lens Cable............3-20
3. Adjusting the Position of the 

Change Solenoid......................3-21