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HP-87
Service manual
Replacing The Space Bar - HP -87 Service Manual
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Contents
Table of Contents
Troubleshooting
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Table of Contents
Troubleshooting
Troubleshooting
22
Troubleshooting overview
28
Initial troubleshooting
34
Troubleshooting with the system test
47
Troubleshooting with the cycle test
53
Results of the Heat Test
54
Results of the CPU Test
55
Troubleshooting with the RAM test
56
Results of the RAM Test
57
Results of the ROM Test
58
Keyboard troubleshooting
60
Troubleshooting with the timer test
84
Power supply troubleshooting
99
Troubleshooting with the short HP-IB test
104
Troubleshooting with the Long HP-IB Test
105
Results of the Long HP-IB Test
106
Troubleshooting with the beeper test
108
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Hp-75
Hp-75d
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