Zenith Z-171 Series Service Manual page 4

iv
Contents
Chapter 4 DisassemblylReassembly
Disassembly Procedures ............................................... 4-2
Carry Strap ........................................................ 4-2
Rear Access Panel ................................................. 4-4
Back Cover ........................................................ 4-5
Memory Board .................................................... , 4-7
Main Logic Board .................................................. 4-8
Disk Drive Assembly ............................................... 4-9
DC Power Board .................................................. 4-10
LCD Board ........................................................ 4-11
RGB Video Board ................................................. 4-13
Modem Board..................................................... 4-14
Battery Pack ...................................................... 4-15
Keyboard ......................................................... 4-16
Chapter
5
Configuration
Main Logic Board ............... ;......................................
5-6
Memory Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-7
RGB Video Board .....................................................
5-9
Disk Drive Configuration ............................................. 5-12
Chapter 6 System Checkout and Troubleshooting
System Checkout Procedure ............................................ 6-1
Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
6-5
General Power ............ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
6-5
LCD ............................................................ 6-8
Disk Drives ..................................................... 6-8
Real-Time Clock ................................................ 6-10
RGB Video Board ............................................... 6-11
Modem Board .................................................. 6-13
Error Messages.................................................. 6-2
Chapter 7 Parts Ust
Figures
1-1:
1-2:
1-3:
1-4:
1-5:
1-6:
2-1:
2-2:
2-3:
2-4:
Z-170 Computer ............................................... 1-2
Right View .................................................... 1-3
Left View ..................................................... 1-4
Rear View .................................................... 1-5
Model Numbers ............................................... 1-9
Block Diagram ............................................... 1-10
Opening/Closing the Computer ................................. 2-1
Shoulder Strap Removal ................ . . . . . . . . . . . . . . . . . . . . .. 2-2
Expansion Connector .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-5
Serial Connector ............................................. 2-6