Canon NP6330 Service Manual page 10

CHAPTER 7 CONTROLS AND EXTERNALS
I. FANS ..................................................7-1
II. POWER SUPPLY ...............................7-3
A. Outline of Power Supply................7-3
B. Protection Mechanisms of the
Power Supply Circuit .....................7-5
III. ERROR DETECTION CIRCUIT .........7-6
A. Outline ...........................................7-6
B. Scanning Lamp Error Activation
Detection Circuit ............................7-7
C. Fixing Heater Error Activation
Detection Circuit ............................7-7
1. Detection by an SSR................7-7
2. Detection by a Thermistor ........7-7
IV. DISASSEMBLY AND ASSEMBLY......7-8
A. Externals........................................7-9
1. Remove the left inside cover....7-11
2. Remove the right inside cover ...7-12
B. Control Panel.................................7-14
1. Removing the Control Panel ....7-14
C. Copyboard Cover ..........................7-15
1. Replacing the Copyboard
Cover Sheet .............................7-15
D. Fans...............................................7-15
1. Removing the Scanner
Cooling Fan ..............................7-15
CHAPTER 8 PAPER DECK PEDESTAL
I. BASIC OPERATION ...........................8-1
A. Outline of Electrical Circuit ............8-1
II. INPUTS TO AND OUTPUTS FROM
PEDESTAL CONTROLLER ...............8-2
A. Outline ...........................................8-2
B. Inputs to and Outputs from
Pedestal Controller ........................8-3
1. Inputs and outputs (1/2) ...........8-3
2. Inputs and outputs (2/2) ...........8-4
III. PEDESTAL MOTOR CONTROL
CIRCUIT .............................................8-5
A. Outline ...........................................8-5
B. Mechanism ....................................8-5
IV. PAPER DECK UNIT ...........................8-6
A. Basic Construction ........................8-6
B. Pick-Up/Feeding Operation ...........8-7
1. Mechanism ...............................8-7
2. Sequence of Pick-Up
Operations ................................8-8
C. Lifter Operation..............................8-9
1. Operation..................................8-9
2. Lifting Operation .......................8-10
D. Detecting Paper in the Deck .........8-11
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Removing the Exhaust Fan......7-15
3. Removing the Feeding Fan .....7-17
E. Main Motor Assembly....................7-17
1. Removing the Main Motor
Assembly ..................................7-17
F. Mirror Guide Assembly..................7-18
1. Removing the Mirror Guide
Plate .........................................7-18
G. Main Drive Assembly.....................7-19
1. Removing the Main Drive
Assembly ..................................7-19
2. Attaching the Drive Belt............7-22
H. Cleaning Belt Drive Assembly .......7-23
1. Removing the Cleaning Belt
Drive Assembly ........................7-23
I. DC Controller PCB ........................7-24
1. Removing the DC Controller
PCB ..........................................7-24
2. Points to Note When Handling
the DC Controller PCB .............7-24
J DC Power Supply PCB .................7-25
1. Removing the DC Power
Supply PCB ..............................7-25
1. Identifying the Size of Paper ....8-11
2. Identifying the Presence/
Absence of Paper.....................8-12
V. DETECTING JAMS ............................8-13
1. Outline ......................................8-13
VI. DISASSEMBLY AND ASSEMBLY......8-15
A. Externals........................................8-16
1. Paper Deck Pedestal-M1 .........8-16
2. Detaching the Copier from the
Pedestal ...................................8-17
B. Pedestal Motor Drive Assembly ....8-19
1. Removing the pedestal motor
drive assembly .........................8-19
C. Paper Deck....................................8-20
1. Removing the Paper Deck .......8-20
2. Removing the Lifter Wire..........8-21
3. Setting the Deck Size...............8-25
4. Adjusting the Deck Registration..8-27
D. Pick-Up System .............................8-28
1. Cross Section of Pick-Up
Assembly ..................................8-28
2. Removing the Pick-Up
Assembly ..................................8-29
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