Agilent Technologies 35670A Service Manual download pdf (Page 42)

42 Agilent 35670A Supplement

4 Service Guide

Reset logic all references to S2 are changed to S5 and there is a

new block diagram.

IIC (Inter_IC) controller the bullet referring to A8 memory is

replaced:

• A17 CPU (Real time clock, EEPROM)

Disk Controller Disregard the final sentence referring to

reversed operation.

Frame Memory Consists of four SRAM chips.

Figure 21 Reset logic

To battery-backed SRAM control circuit

RESET

+5V

RSTn

Buffer

+5V

P8(S)

Reset

RSTn

HALTn

MPU

Reset

Generator

RESET

RESETn

+5V

PVALID

(from power supply)

RUN

(GREEN)

To Disk I/F

TO IIC Controller

To A11 Keyboard Controller

To Disk I/F

To Display I/F

To HP-IB Interface

To MFP

To MC56001

To DMA Controller

To A6 Digital

To A5 Analog

DCOM

RESETINn

test point

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 51 52

Agilent 35670A 1
Dynamic Signal Analyzer 1
In This Supplement 3
4 Agilent 35670A Supplement 4
Contents 5
6 Agilent 35670A Supplement 6
Overview 7
Summary of Changes 8
Agilent Technologies 9
Operator’s Guide 11
Formatting the Display 12
Service Guide 13
4 Service Guide 14
Troubleshooting the Analyzer 16
Service Guide 4 17
Agilent 35670A Supplement 17 17
Agilent 35670A Supplement 21 21
Page in original guide 4-19 21
Pin-out for 23
P13 connector 23
Agilent 35670A Supplement 25 25
Agilent 35670A Supplement 27 27
Adjusting the Analyzer 28
Replacing Assemblies 29
To re move CP U 31
To re move NV RA M 32
To remove memory 32
To re move moth er bo ar d 32
Power Inverter 33
Bezel Assembly 33
Instrument Covers and Handles 34
Front Panel Parts 35
Rear Panel Parts 36
Chassis Parts 36
Miscellaneous Parts 36
Circuit Descriptions 37
Agilent 35670A Supplement 39 39
Agilent 35670A Supplement 41 41
A8 Memory 43
A9 NVRAM 43
A102 DC-DC Converter 43
Voltages and Signals 44
Agilent 35670A Supplement 47 47
A99 Motherboard 49
A101 Display 50

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Agilent Technologies 35670A Service Manual Page 42

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