Ricoh G031 Service Manual page 14

2.6.2 FUSING ..........................................................................................2-30
2.6.3 FUSING UNIT DRIVE.....................................................................2-30
2.6.4 PRESSURE ROLLER/PAPER EXIT...............................................2-31
2.6.5 FUSING UNIT DRIVE RELEASE ...................................................2-31
2.6.6 NEW FUSING UNIT DETECTION (STINGER - P3 ONLY) ............2-32
2.6.7 FUSING TEMPERATURE CONTROL............................................2-33
2.6.8 OVERHEAT PROTECTION............................................................2-35
2.6.9 ENERGY SAVER MODE................................................................2-36
2.7 COVER OPEN DETECTION ...................................................................2-37
2.7.1 FRONT COVER LOCK...................................................................2-37
2.7.2 FRONT COVER SAFETY SWITCH................................................2-37
2.7.3 REMOVING THE FUSING UNIT ....................................................2-38
2.8 ENGINE CONTROL BOARD...................................................................2-39
2.8.1 PCB LAYOUT .................................................................................2-39
2.8.2 DEVICES ........................................................................................2-40
2.8.3 STRUCTURE..................................................................................2-41
2.8.4 CONNECTION TO THE ECB .........................................................2-42
2.9 SIGNAL TABLE .......................................................................................2-44
2.10 PRINTER CONTROL BOARD...............................................................2-47
2.10.1 PCB LAYOUT ...............................................................................2-47
2.10.2 DEVICES ......................................................................................2-48
INSTALLATION
3. INSTALLATION .......................................................................... 3-1
3.1 INSTALLATION REQUIREMENTS ...........................................................3-1
3.1.1 ENVIRONMENT ...............................................................................3-1
3.1.2 POWER REQUIREMENTS ..............................................................3-1
3.2 PRINTER INSTALLATION ........................................................................3-2
3.3 PAPER FEED UNIT INSTALLATION ........................................................3-2
3.4 ENVELOPE FEEDER INSTALLATION .....................................................3-2
3.5 HARD DISK INSTALLATION.....................................................................3-2
3.6 MEMORY UNIT INSTALLATION...............................................................3-2
3.7 NETWORK INTERFACE BOARD INSTALLATION...................................3-2
3.8 CHECKING THE CONNECTIONS ............................................................3-3
3.8.1 CONNECTION BETWEEN MAIN PRINTER CONTROL BOARD
(AND RELATED OPTIONS: HDD, RAM SIMM, NIC) AND
OPTIONAL HDD & PERIPHERALS .................................................3-3
3.8.2 CONNECTION BETWEEN PRINTER CONTROL BOARD AND
NETWORK INTERFACE BOARD ....................................................3-6
3.8.3 PRINTING THE NETWORK INTERFACE BOARD
CONFIGURATION SHEET...............................................................3-6
SERVICE TABLES AND PROCEDURES
4. SERVICE PROCEDURES AND TABLES ................................... 4-1
4.1 OVERVIEW ...............................................................................................4-1
4.2 SERVICE PROGRAM MODE....................................................................4-2
G031/G032/G049/G054 ii SM