
Diagrams 41
Schematic Notes
Notes that apply to all schematic sheets are given as follows:
•
All resistors are in ohms
±
1%, 1/8W, unless otherwise specified.
•
All capacitors are in microfarads unless otherwise specified.
•
An asterisk negates a signal name. For example, WR appears on the schematic as
WR*.
•
Signal line destinations are given inside the parentheses at the end of the signal lines. For example, RDY (S0lA5),
indicates that the
RDY
signal continues on schematic sheet 01 at grid coordinates A, 5. Coordinates are labeled on the
schematic border.
•
Signal lines that are terminated by flags continue onto other sheets. Note that flags do NOT indicate signal flow
direction.
•
Signal lines without flags go to another location of the same schematic sheet.
•
Test points on the schematic sheets (e.g. TP3) identify the location of the test points used in the troubleshooting
procedures in Chapter 4.
•
Voltages and waveforms shown on the schematics are obtained when following the troubleshooting procedures in
Chapter 4.
Summary of Contents for 66000A
Page 20: ......
Page 23: ...Troubleshooting 23 Figure 4 1 Overall Troubleshooting Sheet 1 of 7...
Page 24: ...24 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 2 of 7...
Page 25: ...Troubleshooting 25 Figure 4 1 Overall Troubleshooting Sheet 3 of 7...
Page 26: ...26 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 4 of 7...
Page 27: ...Troubleshooting 27 Figure 4 1 Overall Troubleshooting Sheet 5 of 7...
Page 28: ...28 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 6 of 7...
Page 29: ...Troubleshooting 29 Figure 4 1 Overall Troubleshooting Sheet 7 of 7...
Page 30: ...30 Troubleshooting Figure 4 2 Bias Troubleshooting Sheet 1 of 2...
Page 31: ...Troubleshooting 31 Figure 4 2 Bias Troubleshooting Sheet 2 of 2...
Page 32: ...32 Troubleshooting Figure 4 3 ROM Microprocessor Troubleshooting...
Page 43: ...TP 0 TP 1 TP 2 TP 4 TP 5 TP 8 TP 7 TP 9 TP10 TP11 TP12 TP13 COM TP14 TP 3 TP 6...
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