MOD E L 3S62A
S E RV I C E
8-61 A2, A22 SYSTEM CPU/HP'S
The information in this section shou ld be used to isolate fau lty subblocks in the A2 and
A22 System CPU/H P I B assembl ies. A l l procedu res assume the Fau lt I solation procedu res
of Section V I I have been used to determine which board has failed, and the Circuit Descrip
tions of Section VI are u nderstood.
WARNING
Service procedures described in this section are performed with
the protective co vers remo ved and power applied. Hazardous
voltage and energy available at many points can, if contacted, result
in personal injury.
CAUTION
Do not insert or remove any circuit board in the HP 3562A with
the line power turned on. Power transients caused by insertion or
removal may damage the circuit boards.
How to Use This Section
Verify
Afh�r-Repair
Start troubleshooting by using figu re A2-1 . This proced u re diagram
describes the best order to perform the troubleshooting tests based
on the symptoms observed .
For the component locator and schematic refer to Section IX. For the
location of cables and boards refer to figure 4-1 in Section IV.
Use the osc i l loscope waveforms in table A2-5 to see correct operation
at various test poi nts in the assembly.
Use table A2-6 to determine which adjustments and tests need to be
done to complete instrument service.
Troubleshooting Hints
1 . Only + 5 Vdc and ground are req u i red to trou bleshoot the A2 CPU/HPI B assemb ly.
To run the A2 CPU/H PI B assembly without the rest of the instrument, put jumpers
A2 J 1 5 and A2 J 1 6 in test (T) position.
2. The A2 CPU/H PI B can be run on an external clock by grounding A2 TP3 and connecting
a TTL level, 8 MHz clock to A2 T P4.
3. U ndefined fai l u res are most likely caused by stu ck bits. This is occurring if the status
LEDs (A2 DS2) are a steady state value instead of changing rapid ly. Go to the i n itial
cond itions test (A).
8-27
Содержание 3562A
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Страница 149: ...IODEL 3562A R1 0 A22 Board Location Key Figure 3 1 7 Analog source component locator A30R 1 0 ADJUSTMENTS 3 21 3 22 ...
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Страница 207: ...MODEL 3562A CR Cl ...
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Страница 213: ...r A1 a pQWERSuP PLY I 03562 66518 REV A REV 8 8MPOUT 58 58 FRONT REAR P ANEL ii O N ...
Страница 214: ... C401 8S1 15ISI t 1 J400 ...
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Страница 224: ...A3 CQVLCLI A3 ...
Страница 231: ...S V InO 3J nOS N I l3 3 1 1 1X3 NI 31dWVS lX3 H l 1 3 NNVH I 0 Ioe J ...
Страница 237: ...Sample Clock SAMP DS DATA oe _ _ _ _ _ BUS NOTE FULL SPA BASi BAI MODE ...
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Страница 259: ...WRITEL A22L l cc E Vl 8 MHz A23L ASL Inverting A1L A21 L D rivers r ...
Страница 305: ...c c I O Sequencer S r J Sequence Decoder ...
Страница 311: ... FROM 7 1 A2 SYSTEM CPU Dcf L TO 07L FROM A2 SYSTEM CPU ADDRESS L I N ES 7 1 DTACKL A2 SYSTEM CPU IRQTL ...
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Страница 321: ... From Digital Source From Digital Source Serial Data Serial Data Sinewave Interface Front End Interface 3 S D D ...
Страница 324: ...EXT TRIGGER TRIG 1 TRIG 2 CALTRIG CNTLD COMI W CNTCLK LDTRGL RESETL ...
Страница 327: ... RH r I N EXT BUFFER SAMPLE _ _ _ IN ...
Страница 425: ...L_ FAULT ISOLATION Instrument Operational Figure 7 1 3 SELF TEST Sequence MODEL 3562A STOP Enter failure in r t be 7 61 ...
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