Service manual

Contents vii
4–21 Removing the Graphics Coprocessor Module - Sectional View 61
4–22 Removing Memory Modules . . ........................ 63
4–23 System Module.................................... 64
4–24 Removing the System Module ........................ 65
4–25 Removing the Ethernet ID ROM ...................... 66
4–26 Installing the System Module ........................ 67
4–27 Removing the Internal SCSI Bus Data Cable ............ 69
4–28 Power Supply Screw Locations ....................... 70
4–29 Keyboard, Mouse, and Printer Removal . . ............... 71
D–1 LED Layout ...................................... 124
Tables
1–1 Power-Up and Self-Test Commands .................... 3
1–2 System Exerciser Diagnostic Commands . ............... 8
2–1 Locating a Failed Memory SIMM...................... 12
2–2 SCSI Devices Self-Test Status Codes ................... 14
2–3 System Module Power Connector Voltages ............... 18
3–1 Utilities . ........................................ 19
3–2 Diskette Formatter Messages. ........................ 21
3–3 T 76 Error Codes for the Diskette Formatter ............. 22
3–4 PV_SCS_FMT_ERR# Command Codes . . ............... 23
3–5 PV_SCS_FMT_ERR# Error Codes ..................... 24
4–1 FRU Section Listings ............................... 37
4–2 Monitors. ........................................ 38
4–3 RZ22, RZ23, RZ23L, and RZ24 Jumpers . ............... 47
4–4 SCSI/FDI Adapter Switch Settings .................... 52
C–1 SCSI-B Error and Status Summary .................... 108
C–2 SCSI Device Status ................................ 109
C–3 SCSI-A Error and Status Summary .................... 112
D–1 Diagnostic LEDs Definitions . ........................ 121