Page 1
Service
Manual
Model 7015
DL1500C Series
Digital Oscilloscope
SM 701530-01E
Yokogawa Electric Corporation
SM 701530-01E
1st Edition
Page 2
IMPORTANT NO TICE T O THE USER
This manual contains information for servicing the YOKOGAWA Digital Oscilloscope
DL1500C series. Confirm by serial number that this Service Manual covers the
instrument to be serviced. Do not use the wrong manual.
Before any maintenance and servicing, read all safety precautions carefully.
Only properly trained personnel may carry out maintenance and servicing in
accordance with and to the extent permitted by this Service Manual.
Do not disassemble the instrument or its parts, unless otherwise clearly permitted by
this Service Manual.
Do not replace any part or assembly, unless otherwise clearly permitted by this
Service Manual.
YOKOGAWA ELECTRIC CORPORATION (YOKOGAWA) does not in principle
supply parts other than those listed in the Customer Maintenance Parts List in this
Service Manual (mainly modules and assemblies). Therefore if an assembly fails, the
user should replace the whole assembly and NOT components within the assembly (see
NOTE). If the user attempts to repair the instrument by replacing individual components
within the assembly, YOKOGAWA assumes no responsibility for any consequences,
such as defects in instrument accuracy, functionality, or reliability, or user safety
hazards.
YOKOGAWA does not offer more detailed maintenance and service information than
that contained in this Service Manual.
All reasonable efforts have been made to assure the accuracy of the content of this
Service Manual. However, there may still be errors such as clerical errors or omissions.
YOKOGAWA assumes no responsibility of any kind concerning the accuracy or
contents of this Service Manual, nor for the consequences of any errors.
All rights reserved. No part of this Service Manual may be reproduced in any form or
by any means without the express written prior permission of YOKOGAWA. The
contents of this manual are subject to change without notice.
NOTE YOKOGAWA instruments have been designed in a way that the replacement of
electronic parts can be done on an assembly (module) basis by the user. YOKOGAWA
instruments have also been designed in a way that troubleshooting and replacement of
any faulty assembly can be done easily and quickly. Therefore, YOKOGAWA strongly
recommends replacing the entire assembly over replacing parts or components within
the assembly. The reasons are as follows:
• The instruments use high-performance microprocessors, large scale CMOS gate arrays
and surface-mount components to provide state-of-art performance and functions.
• Repair of components can only be performed by specially trained and qualified
maintenance personnel with special tools. In addition, repair of components requires
various special parts and components, including costly ones. It also requires facilities
where highly-accurate and expensive maintenance equipment and special tools are
provided.
• When taking the service life and cost of the instruments into consideration, the
replacement of assemblies offers the user the possibility to use YOKOGAWA
instruments more effectively and economically with a minimum in downtime.
Disk No. SM12
1st Edition : May 2000 (YK)
All Rights Reserved, Copyright © 2000, Yokogawa Electric Corporation
SM 701530-01E
1
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INTRODUCTION
This manual contains information for servicing the YOKOGAWA Digital Oscilloscope
DL1500C series.
NOTES This manual is the first edition, May 2000.
WARNING
This Service Manual is to be used by properly trained personnel only. To avoid
personal injury, do not perform any servicing unless you are qualified to do so.
Refer to the Safety Precautions prior to performing any service.
Even in case of servicing according to this Service Manual and carried out by
qualified personnel, YOKOGAWA assumes no responsibility for any result
occurring from this servicing.
2 SM 701530-01E
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SAFETY PRECAUTIONS
The following general safety precautions must be observed during all phases of
operation, service, and repair of this instrument. Failure to comply with these
precautions or with specific WARNINGS given elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the instrument.
YOKOGAWA ELECTRIC CORPORATION assumes no liability for the customer’s
failure to comply with these requirements.
General definitions of safety symbols used on equipment and in manuals
Explanation: To avoid injury, death of personnel or damage to the instrument, the
operator must refer to an explanation in the instruction manual.
It represents a Function Grounding Terminal. Such terminals shold not be used as a
“Protective Grounding Terminal”.
WARNING
CAUTION
WARNING
A WARNING sign denotes a hazard. It calls attention to a procedure, practice,
condition or the like, which, if not correctly performed or adhered to, could result
in injury or death of personnel.
A CAUTION sign denotes a hazard. It calls attention to a procedure, practice,
condition or the like, which, if not correctly performed or adhered to, could result
in damage to or destruction of part of the product.
Power Supply
Ensure the source voltage matches the voltage of the power supply before
turning on the power.
Power Cord and Plug
To prevent an electric shock or fire, be sure to use the power supply cord
supplied by YOKOGAWA. The main power plug must be plugged in an outlet
with protective grounding terminal. Do not invalidate protection by using an
extension cord without protective grounding.
Protective Grounding
The protective grounding terminal must be connected to ground to prevent an
electric shock before turning ON the power.
Necessity of Protective Grounding
Never cut off the internal or external protective grounding wire or disconnect the
wiring of protective grounding terminal. Doing so poses a potential shock
hazard.
SM 701530-01E
Defect of Protective Grounding and Fuse
Do not operate the instrument when protective grounding or fuse might be
defective.
Fuse
To prevent a fire, make sure to use fuses with specified standard (current,
voltage, type). Before replacing the fuses, turn off the power and disconnect the
power source. Do not use a different fuse or short-circuit the fuse holder.
Do not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation of any electrical instrument in such an environment constitutes a
safety hazard.
3
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Do not Remove any Covers
There are some areas with high voltage. Do not remove any cover if the power
supply is connected. The cover should be removed by qualified personnel only.
External Connection
To ground securely, connect the protective grounding before connecting to
measurement or control unit.
HOW TO USE THIS MANUAL
This manual is meant to be used by qualified personel only. Make sure to have read the
safety precautions at the beginning of this manual and the warnings/cautions contained
in the referred chapter prior to carrying out any servicing.
This manual contains the following chapters:
1 GENERAL INFORMATION
Describes the introduction and safety considerations.
2 PERFORMANCE TEST
Describes the performance tests for checking performance of the instrument.
3 ADJUSTMENTS (for DL1540C/DL1540CL)
Describes the adjustments which can be adjusted by users.
4 PRINCIPLE OF OPERATION (for DL1540C/DL1540CL)
Describes the function block diagrams and principle of operation.
5 TROUBLESHOOTING (for DL1540C/DL1540CL)
Describes procedures for troubleshooting and how to handle in case parts need to be
replaced.
6 SCHEMATIC DIAGRAM (for DL1540C/DL1540CL)
Describes the system configuration diagram.
7 CUSTOMER MAINTENANCE PARTS LIST
Contains exploded views and a list of replaceable parts.
Specifications are not included in this manual; for specifications, refer to IM 70153001E.
4 SM 701530-01E
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CONTENTS
IMPORTANT NOTICE TO THE USER .................................................................................... 1
INTRODUCTION .................................................................................................................... 2
SAFETY PRECAUTIONS........................................................................................................3
HOW TO USE THIS MANUAL .................................................................................................4
Chapter 1 GENERAL INFORMATION
1.1 Introduction............................................................................................... 1-1
1.2 Safety Consideration ................................................................................ 1-1
Chapter 2 PERFORMANCE TEST
2.1 Introduction............................................................................................... 2-1
2.2 Test Environment...................................................................................... 2-1
2.3 Equipment Required................................................................................. 2-1
2.4 Vertical Axis DC Voltage Accuracy Test.................................................... 2-2
2.5 Frequency Response Test ........................................................................ 2-4
2.6 Time-Base Axis Accuracy Test ................................................................. 2-6
2.7 Trigger Sensitivity Test .............................................................................. 2-7
2.8 Trigger Accuracy Test ............................................................................... 2-8
1
2
3
4
5
Chapter 3 ADJUSTMENTS (for DL1540C/DL1540CL)
3.1 Introduction............................................................................................... 3-1
3.2 Test Environment...................................................................................... 3-1
3.3 Equipment Required................................................................................. 3-2
3.4 DC Gain Adjustment on the Attenuator Assembly ................................... 3-3
3.5 Reference Voltage Adjustment on the Analog Board Assembly............... 3-5
3.6 Threshold Level Adjustment on the Rear Assembly................................. 3-6
Chapter 4 PRINCIPLE OF THE OPERATION (for DL1540C/DL1540CL)
4.1 Introduction............................................................................................... 4-1
4.2 Analog Section ......................................................................................... 4-1
4.3 Digital Section .......................................................................................... 4-2
4.4 Functions of Each Gate Array .................................................................. 4-4
Chapter 5 TROUBLESHOOTING (for DL1540C/DL1540CL)
5.1 Introduction............................................................................................... 5-1
5.2 Flowchart.................................................................................................. 5-2
5.3 Self Test.................................................................................................... 5-6
5.3.1 Self Test (CAL) ............................................................................................................ 5-7
5.3.2 Self Test (BOARD) ...................................................................................................... 5-8
5.3.3 Self Test (KEY)............................................................................................................ 5-8
5.3.4 Self Test (CRT)............................................................................................................ 5-9
5.3.5 Self Test (FDD) ........................................................................................................... 5-9
5.3.6 Self Test (PRINTER) ................................................................................................. 5-10
6
7
SM 701530-01E
Chapter 6 SCHEMATIC DIAGRAM (for DL1540C/DL1540CL)........................................ 6-1
Chapter 7 CUSTOMER MAINTENANCE PARTS LIST
7.1 Standard Accessories (for DL1500C Series) ........................................... 7-1
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1.1 Introduction
Chapter 1 GENERAL INFORMATION
This chapter describes the general information.
1.1 Introduction
1.2 Safety Consideration
1.1 Introduction
This manual describes servicing information on YOKOGAWA Digital Oscilloscope
DL1500C series.
This chapter contains information required for using this manual and information that
must be known before starting servicing of the DL1500C series.
1.2 Safety Consideration
Thoroughly read the safety precautions at the beginning of this manual without fail.
Also fully read warnings and cautions contained in each chapter.
1
GENERAL INFORMATION
SM 701530-01E
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Chapter 2 PERFORMANCE TEST
This chapter describes the following tests.
2.1 Introduction
2.1 Introduction
2.2 Test Environment
2.3 Equipment Required
2.4 Vertical Axis DC Voltage Accuracy Test
2.5 Frequency Response Test
2.6 Time-base Accuracy Test
2.7 Trigger Sensitivity Test
2.8 Trigger Accuracy Test
2.1 Introduction
The aim of the test is to check basic performance of the instrument. The order of the test
is just for convenience and it does not have any significant meaning. Please use
recommended equipment or their equivalents.
2.2 Test Environment
1) Please operate the instrument in the following environment.
• Ambient Temperature : 23±2˚C
• Humidity : 55±10% RH
• Voltage of power supply : Specified Voltage ±1%
• Frequency of power supply : Specified Frequency ±1%
2
PERFORMANCE TEST
2) Warm up time
• More than 30 minutes after energizing the instrument.
• Confirm that self calibration is correctly executed after 30 minutes warm up.
(Please pay attention to warm up time of the each equipment which will be used in the
test.)
2.3 Equipment Required
Equipment Critical Specification Recommended
DC Volt Standard Accuracy : <0.05% YOKOGAWA 7651
Signal Generator Frequency : 0.1 to 150 MHz Hewlett Packard 8657A
Power Meter Frequency : 100 kHz to 150 MHz Hewlett Packard 437B
Power Sensor Frequency : 100 kHz to 150 MHz Hewlett Packard 8482A
Function Generator Triangular wave YOKOGAWA 7060
50 ohm Terminator Hewlett Packard 1251-2277
Banana to BNC Conversion Adapter Banana plug to BNC YOKOGAWA 3669 22
N(P) to BNC(J) Conversion Adapter N plug to BNC jack Hewlett Packard 1250-0780
BNC(J) to N(J) Conversion Adapter N jack to BNC jack Hewlett Packard 1250-1474
BNC-BNC Cable BNC to BNC YOKOGAWA 3669 24
Table 2.1 Equipment Required
Output Voltage : –20 V to 20 V
Output Resolution : 1 mV
Frequency : 100 kHz
Output Level : 800 mV
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2.4 Vertical Axis DC Voltage Accuracy Test
Specifications
1 mV/div :±(5% of 8 div + 1LSB)
100 mV/div :±(1.5% of 8 div + 1LSB)
Other ranges :±(2.5% of 8 div + 1LSB)
Permissible range
Range Tolerance
1 mV/div ±0.48 mV
(Available with DL1540C/DL1540CL)
2 mV/div ±0.48 mV
5 mV/div ±1.2 mV
10 mV/div ±2.4 mV
20 mV/div ±4.8 mV
50 mV/div ±12 mV
100 mV/div ±16 mV
200 mV/div ±48 mV
500 mV/div ±120 mV
1 V/div ±240 mV
2 V/div ±480 mV
5 V/div ±1.2 V
Equipment required
Equipment Critical Specification Recommended
DC Volt Standard Accuracy : <0.05% YOKOGAWA 7651
Output Voltage : –20 V to 20 V
Output Resolution : 1 mV
Banana to BNC Conversion Adapter Banana plug to BNC YOKOGAWA 3669 22
BNC-BNC Cable BNC to BNC YOKOGAWA 3669 24
Connection
DC Voltage Standard
DL1500C Series
CH 1 to 4
Conversion adaptor
2 - 2
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Procedure
1) Set the DL1500C series as shown below.
VERTICAL (for all channels)
V/DIV According to the inspection item below
POSITION 0 DIV
COUPLING DC
PROBE 1:1
HORIZONTAL
TIME/DIV 10 µs/div
TRIGGER
SOURCE LINE
MODE AUTO
DELAY 0 ms
ACQ
MODE NORMAL: 5 V/div to 50 mV/div
AVERAGE 256 times: 20 mV/div to 1 mV/div
MEASURE
MODE ON
TRACE (Set to channel to be measured)
ITEM Select Avg.
2.4 Vertical Axis DC Voltage Accuracy Test
2
PERFORMANCE TEST
2) Input the following voltages from the voltage generator to the DL1500C series to be
tested, read the indication on the DL1500C series (value of Avg), and compare the
reading with the tolerance.
Measurement Range Test Input Voltage Tolerance
1 mV/div –4 mV, 0 mV, +4 mV ±0.48 mV
2 mV/div –8 mV, 0 mV, +8 mV ±0.48 mV
5 mV/div –20 mV, 0 mV, +20 mV ±1.2 mV
10 mV/div –40 mV, 0 mV, +40 mV ±2.4 mV
20 mV/div –80 mV, 0 mV, +80 mV ±4.8 mV
50 mV/div –200 mV, 0 mV, +200 mV ±12 mV
100 mV/div –400 mV, 0 mV, +400 mV ±16 mV
200 mV/div –800 mV, 0 mV, +800 mV ±48 mV
500 mV/div –2 V, 0 V, +2 V ±120 mV
1 V/div –4 V, 0 V, +4 V ±240 mV
2 V/div –8 V, 0 V, +8 V ±480 mV
5 V/div –20 V, 0 V, +20 V ±1.2 V
3) Test all channels in the same manner.
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2.5 Frequency Response Test
Specifications
In repetitive sampling mode :DC to 150 MHz (–3 dB point)
Permissible range
Input Frequency Permissible Range
0.1 MHz ±1 dB
20.02 MHz ±1 dB
150 MHz +1, –3 dB
Equipment required
Equipment Critical Specification Recommended
Signal Generator Frequency : 0.1 to 150 MHz Hewlett Packard 8657A
Power Meter Frequency : 100 kHz to 150 MHz Hewlett Packard 437B
Power Sensor Frequency : 100 kHz to 150 MHz Hewlett Packard 8482A
50 ohm Terminator Hewlett Packard 1251-2277
N(P) to BNC(J) Conversion Adapter N plug to BNC jack Hewlett Packard 1250-0780
BNC(J) to N(J) Conversion Adapter N jack to BNC jack Hewlett Packard 1250-1474
BNC-BNC Cable BNC to BNC YOKOGAWA 3669 24
Calibration of standard signal generator
Connection
Power Meter
Signal Generator
Power Sensor
N to BNC Adapter BNC to N Adapter
Procedure
Output the signals at the following frequencies and output levels from the standard
signal generator and measure the output level with the power meter.
Output Frequency Output Level
0.1 MHz +16 dBm, +10 dBm, 0 dBm, –14 dBm
20.02 MHz +16 dBm, +10 dBm, 0 dBm, –14 dBm
150 MHz +16 dBm, +10 dBm, 0 dBm, –14 dBm
2 - 4
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Frequency response test
2.5 Frequency Response Test
Connection
DL1500C Series
Signal Generator
2
PERFORMANCE TEST
CH 1 to 4
N to BNC Adapter
Procedure
1) Set the DL1500C series as shown below.
VERTICAL (for all channels)
V/DIV Set this according to the following measurement
conditions
POSITION 0 DIV
COUPLING DC
PROBE 1:1
HORIZONTAL
TIME/DIV Set this according to the following measurement
conditions
TRIGGER
TYPE EDGE
MODE NORMAL
SOURCE (Channel to be tested)
ACQ
MODE NORMAL
MEASURE
MODE ON
TRACE (Set to channel to be tested)
ITEM Select P-P
50 ohm Termination
(feed thru)
SM 701530-01E
2) Input the following voltages to the DL1500C series, read the indications on the
DL1500C series (P-P values), and compare the difference between these and the values
measured by the power meter to the specified tolerances.
(i) Input sensitivity setting 1 V/div Input level +16 dBm (4 Vp-p)
(ii) Input sensitivity setting 500 mV/div Input level +10 dBm (2 Vp-p)
(iii) Input sensitivity setting 100 mV/div Input level 0 dBm (632.5 mVp-p)
(iv) Input sensitivity setting 20 mV/div Input level –14 dBm (126.3 mVp-p)
Input Frequency Permissible Range T/div
0.1 MHz ±1 dB 5 µs/div
20.02 MHz ±1 dB 20 ns/div
150 MHz +1, –3 dB 5 ns/div
3) Test all channels in the same manner.
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2.6 Time-Base Axis Accuracy Test
Specifications
±(0.01% + 500 ps)
Permissible range
50 kHz ± 10 kHz
Equipment required
Equipment Critical Specification Recommended
Signal Generator Frequency : 0.1 to 150 MHz Hewlett Packard 8657A
50 ohm Terminator Hewlett Packard 1251-2277
N(P) to BNC(J) Conversion Adapter N plug to BNC jack Hewlett Packard 1250-0780
BNC-BNC Cable BNC to BNC YOKOGAWA 3669 24
Connection
Signal Generator
DL1500C Series
CH 1
N to BNC Adapter
Procedure
1) Set the standard signal generator as shown below.
100.05 MHz 800 mVp-p
2) Set the DL1500C series as shown below.
VERTICAL (CH1)
V/DIV 200 mV/div
POSITION 0div
COUPLING DC
PROBE 1:1
HORIZONTAL
TIME/DIV 10 µs/div (100 Msps)
TRIGGER
TYPE EDGE
LEVEL 0 V
MODE NORMAL
SOURCE CH1
COUPLING DC
EDGE RISE
ACQ
MODE NORMAL
MEASURE
MODE ON
TRACE CH1
ITEM Select FREQ
50 ohm Termination
(feed thru)
2 - 6
The measured frequency using MEASURE must be 50 kHz ± 10 kHz.
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2.7 Trigger Sensitivity Test
Specifications
DC to 150 MHz :1 divp-p
Permissible range
50 mV/div 150 MHz :–22 dBm (1 divp-p)
Equipment required
Equipment Critical Specification Recommended
Signal Generator Frequency : 0.1 to 150 MHz Hewlett Packard 8657A
50 ohm Terminator Hewlett Packard 1251-2277
N(P) to BNC(J) Conversion Adapter N plug to BNC jack Hewlett Packard 1250-0780
BNC-BNC Cable BNC to BNC YOKOGAWA 3669 24
Connection
Signal Generator
2.7 Trigger Sensitivity Test
2
PERFORMANCE TEST
DL1500C Series
N to BNC Adapter
Procedure
1) Set the DL1500C series as shown below.
VERTICAL (CH1)
V/DIV 50 mV
OFFSET 0.0 V
COUPLING DC
PROBE 1:1
HORIZONTAL
TIME/DIV 10 ns
REPETITIVE Off
TRIGGER
TYPE EDGE
LEVEL 0.0 V
MODE NORMAL
SOURCE CH1
COUPLING DC
SLOPE ↑
CH 1 to 4
50 ohm Termination
(feed thru)
SM 701530-01E
2) Apply a signal of 150 MHz, –22 dBm (50 mVp-p/17.6 mVrms) to the CH1 input and
check that the waveform stabilizes.
NOTES If the trigger is not actuated, vary the trigger level in the range of ± 0.5 div and check
that the trigger is actuated.
3) Test all channels in the same manner.
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2.8 Trigger Accuracy Test
Specifications
± (1 div + 10% of the trigger level)
Permissible range
Trigger Level Permissible Range
300 mV 170 mV to 430 mV
0 mV –100 mV to 100 mV
–300 mV –430 mV to –170 mV
Equipment required
Equipment Critical Specification Recommended
Function Generator Triangular wave YOKOGAWA 7060
50 ohm Terminator Hewlett Packard 1251-2277
BNC-BNC Cable BNC to BNC YOKOGAWA 3669 24
Connection
Function Generator
Frequency : 100 kHz
Output Level : 800 mV
DL1500C Series
Procedure
1) Set the DL1500C series as shown below.
VERTICAL (CH1)
COUPLING DC
PROBE 1:1
V/DIV 100 mV
OFFSET 0.0 V
HORIZONTAL
TIME/DIV 5 µs
TRIGGER
TYPE EDGE
LEVEL 300 mV, 0 V, –300 mV
MODE NORMAL
SOURCE CH1
COUPLING DC
SLOPE ↑ , ↓
CURSOR
TYPE V–T
CURSOR TRACE CH1
CURSOR T1 0.0 s
CH 1 to 4
50 ohm Termination
(feed thru)
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2.8 Trigger Accuracy Test
2) Connect the function generator output to the CH1 input.
Acquire data with the slope in RISE and the trigger level at 300 mV, read the trigger
point data V1, and check the value is within the following range: 170 mV to 430 mV
Similarly, each value of the trigger point data should be within the following
corresponding range:
Slope Trigger Level Permissible Range
↑ 300 mV 170 mV to 430 mV
↓ 300 mV 170 mV to 430 mV
↑ 0 mV –100 mV to 100 mV
↓ 0 mV –100 mV to 100 mV
↑ –300 mV –430 mV to –170 mV
↓ –300 mV –430 mV to –170 mV
3) Test all channels in the same manner.
2
PERFORMANCE TEST
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3.1 Introduction
Chapter 3 ADJUSTMENTS (for DL1540C/
DL1540CL)
This chapter describes the following tests.
3.1 Introduction
3.2 Test Environment
3.3 Equipment Required
3.4 DC Gain Adjustment on the Attenuator Assembly
3.5 Reference Voltage Adjustment on the Analog Board Assembly
3.6 Threshold Level Adjustment on the Rear Assembly
3.1 Introduction
When adjusting DL1540C/DL1540CL, remove the main unit cover, front panel, and
bottom plate. For this, care must be taken for the following items.
3
ADJUSTMENTS (for DL1540C/DL1540CL)
WARNING
CAUTION
Circuit patterns of the printed circuit board are exposed. Be careful when
handling so that hands or fingers are not injured by the pin protrusions.
Circuit patterns of the printed circuit board are exposed. If these patterns touch
other metallic materials, electrical shorting will occur, causing the circuit to be
damaged or burnt.
It is sometimes necessary to turn the DL1540C/DL1540CL upside down for
adjustment. Be careful to prevent the instrument from toppling.
3.2 Test Environment
1) Please operate the instrument in the following environment.
• Ambient Temperature : 23±2˚C
• Humidity : 55±10% RH
• Voltage of power supply : Specified Voltage ±1%
• Frequency of power supply : Specified Frequency ±1%
2) Warm up time
• More than 30 minutes after energizing the instrument.
• Confirm that self calibration is correctly executed after 30 minutes warm up.
(Please pay attention to warm up time of the each equipment which will be used in the
test.)
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3.3 Equipment Required
Equipment Critical Specification Recommended
DC Volt Standard Output Level : >10 V YOKOGAWA 7651
Digital Volt Meter Accuracy : <0.01% YOKOGAWA 7551
Function Generator Frequency : 1 kHz Hewlett Packard 8166A
Calibration Generator Output Level : >30 Vp-p at open Tektronix PG506A + TM501
BNC-BNC Cable YOKOGAWA 3669 24
Clip-BNC Cable YOKOGAWA 3669 26
50 ohm Terminators Feed Thru Type YOKOGAWA 7009 76
NOTE The values shown in the specification column are those set in this service manual.
These values do not indicate the performances of the recommended equipment and
tools. Therefore, non-designated equipment and tools, which satisfy the specifications,
may be permitted for use.
The Function Generator setting values described in this service manual are those output
when 50 ohm load resistance is applied.
The Function Generator setting values included in this service manual are described in
the following two ways.
(1) Output level: 1 Vp-p
(2) Output level: 1.5 V to 2.5 V
(1) shows where the DC offset function is not used.
(2) shows where a DC offset of 2 V is added to the 1 Vp-p.
Table 3.1 Equipment Required
Accuracy : <0.02%
Output Level : >300 mVp-p
with DC offset function
and flatness :<1%
Output Level : >300 mVp-p at 50 ohm
and rise time :<1 ns
3 - 2
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DC Voltage Standard
CH 1 to 4
DL1540C/DL1540CL
3.4 DC Gain Adjustment on the Attenuator Assembly
3.4 DC Gain Adjustment on the Attenuator Assembly
NOTE Before performing this DC gain adjustment, the reference voltage adjustment of the
Analog Board Assembly must have been completed.
Procedure
1) Remove the unit cover, front panel, and bottom cover.
2) Allow the unit to warm up for 15 minutes or more.
3
ADJUSTMENTS (for DL1540C/DL1540CL)
Figure 3.1 Connection Method
3) Connect each instrument as shown in Figure 3.1 Connection method.
4) Press the [INITIALIZE] key and select the {INITIAL EXEC} option to execute
initialization.
5) Press the [CAL] and {CAL EXEC} option to perform calibration. After that, set
AutoCal item {OFF} so as not to perform an automatic calibration.
6) Set up the DL1540C/DL1540CL series and DC Voltage Standard as follows.
DL1540C/DL1540CL series ch1 to 4 Probe :1:1
Volt/div :100 mV/div
Position :0 div
Offset :+10.000 V
Bandwidth :20 MHz
Acquisition :AVERAGE Count :8
Measure Trace 1 to 4 :AVG
DC Voltage Standard Output Level :+10.000 V
7) Adjust the variable resistor (refer to Table 3.2 Adjustment Point) corresponding to each
channel so that the DC wave form falls within 0±20 mV as shown in Figure 3.2
Observed waveform.
8) Perform the adjustment of 7) for all channels.
Table 3.2 Adjustment Point
Channel Adjustment Point
ch1 RV1
ch2 RV2
ch3 RV3
ch4 RV4
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Figure 3.2 Observed Waveform
3 - 4
Write the channel number in the boxes.
Figure 3.3 ATT Assembly Adjustment Point Location Diagram
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3.5 Reference Voltage Adjustment on the Analog Board Assembly
3.5 Reference Voltage Adjustment on the Analog Board Assembly
Procedure
1) Remove the unit cover, front panel, and bottom plate.
2) Turn power on and allow the unit to warm up for 15 minutes or more.
3) Adjust the variable resistor (RV1) so that the voltage between TP1 and TP2 (GND) falls
within the following values.
5.075 to 5.085 V (5.08±0.005 V)
NOTE After completing this reference voltage adjustment, perform the ATT Assembly DC
gain adjustment again.
Tester probe access is difficult when measuring the terminals TP1 and TP2. Be careful
not to cause a circuit short.
3
ADJUSTMENTS (for DL1540C/DL1540CL)
SM 701530-01E
Figure 3.4 Adjustment Point Location Diagram
3 - 5
Page 22
3.6 Threshold Level Adjustment on the Rear Assembly
Procedure
1) Remove the unit cover, front panel, and bottom plate.
2) Connect each instrument as shown in Figure 3.5 Connection method.
Where a connection to TP9 cannot be made, remove the bracket on which the rear panel
fan is mounted.
DL1540C/DL1540CL (EUT)
Function Generator
Figure 3.5 Connection Method
3) Press the [INITIALIZE] key and select the {INITIAL EXEC} option to execute
initialization.
4) Set up the DL1540C/DL1540CL and Function Generator as follows.
DL1540C/DL1540CL (EUT) Trigger Source :EXT (rising-up)
(EUT : Equipment Under Test) EXT trig range :0.15 V
rear
EXT-
TRIG IN
REAR Ass’y
TP-9
DL1540C/DL1540CL
(Monitor)
TP-2
CH 1
PROBE
DL1540C/DL1540CL (Monitor) ch1 Coupling :AC
Volt/div :200 mV/div
Position :0 div
Time/div :500 µs/div
Bandwidth :20 MHz
Acquisition :AVERAGE Count :8
Measure Trace 1 :+WIDTH , -WIDTH
Function Generator Wave Form :Triangle wave
Frequency :1 kHz
Output Level :0 to +300 mV
5) Connect the probes attached to ch1 of DL1540C/DL1540CL to TP9 and TP2 terminals
on Rear Assembly. Adjust the variable resistor (VR1) so that the duty of the observed
waveform falls with 50±3%, as shown in Figure 3.6 Adjustment waveform.
3 - 6
Figure 3.6 Adjustment Waveform
SM 701530-01E
Page 23
Chapter 4 PRINCIPLE OF THE
OPERATION (for DL1540C/
DL1540CL)
This chapter describes the following tests.
4.1 Introduction
4.2 Analog Section
4.3 Digital Section
4.4 Functions of Each Gate Array
4.1 Introduction
Figure 4.1 shows the block diagram of the analog section in the DL1540C/DL1540CL
and Figure 4.2 shows that of the digital section in the same instrument.
The entire hardware consists of the analog section which includes the attenuator,
preamplifier, multiplexer, A/D converter, and trigger circuit, and the digital section
which includes the acquisition memory, data processing circuit, display control unit,
CPU, keyboard, printer, etc...
4.1 Introduction
4
PRINCIPLE OF THE OPERATION (for DL1540C/DL1540CL)
4.2 Analog Section
This section consists of the ATT Assembly, Analog Board Assembly, and Trigger
Board Assembly.
(1) ATT Assembly.
The ATT Assembly incorporates the switching circuits of the AC/DC input signal,
GND/MEASURE and the 1/1, 1/10, and 1/100 switching circuit of the attenuator and
the one chip amplifier.
The one chip amplifier is an IC intergrating approx. 800 elements including the FET
buffer used to generate the high impedance input required for the oscilloscope. In
addition, the amplifier also provides the functions of gain transfer, band limitation, DC
offset clearance.
The 4 channels together provide a 150 MHz band with sensitivity up to a maximum of
1mV/div.
The division ratio and amplifying rate of the attenuator corresponding to the setting
range are as shown in “Table 5.1 Setting range and Amplifying Level”.
The control of these factors is performed by the Analog Front-end controller on the
Analog Board Assembly.
Setting Range Attenuator Division Ratio Amplifying Rate Remark
1 mV/div 1/1 x 20 1 mV/div is created by digital
2 mV/div 1/1 x 20 zoom (2 mV/div x 2)
5 mV/div 1/1 x 10
10 mV/div 1/1 x 5
20 mV/div 1/1 x 2.5
50 mV/div 1/1 x 1 Setting ranges here depends
100 mV/div 1/10 x 5 on probe setting 1:1.
200 mV/div 1/10 x 2.5
500 mV/div 1/10 x 1
1 V/div 1/100 x 5
2 V/div 1/100 x 2.5
5 V/div 1/100 x 1
Table 4.1 Setting Range and Amplifying Level
SM 701530-01E
4 - 1
Page 24
(2) Analog Board Assembly
The Analog Board Assembly consists of the amplifier, A/D converter, analog frontend
controller, trigger comparator, TV trigger circuit, etc.
The A/D converter incorporates a total of 4 units (one per channel) comprising 8 bits
and 100 MS/s.
Where 2 channels are used, the analog signals are distributed to the switching circuits
using the Multiplexer circuit and sampled at high speed (200 MS/s) based on the
interleaving method.
The Analog Frontend Controller supplies the internal switching signal to the ATT
Assembly. In addition it generates the PWM signal to produce the DC voltage
necessary for DC-ADD, positioning function, and trigger threshold level.
A trigger output signal is sent from the one chip amplifier in the ATT Assembly to the
Trigger comparator.
The signal is converted into a logic signal and transmitted to the trigger logic circuit on
the ACQ Board Assembly. The TV trigger also corresponds to the HDTV.
(3) Trigger Board Assembly (option)
Mounting the Trigger Board Assembly with optional spec. on the ACQ Board
Assembly will enable use of the OR trigger function and pulse width trigger function if
any of the 4 channels satisfy the trigger conditions.
4.3 Digital Section
The digital section consists of the ACQ Board Assembly which performs the data
processing and the CPU Board Assembly which performs the waveform processing,
keyboard operation and printing of the printer.
(1) ACQ Board Assembly
The ACQ Board Assembly includes the acquisition memory, the vertical display
processor, the horizontal display processor, the time-base controller and the time
measurement component.
The max. length of the acquisition memory is 120 kW (in DL1540C) or 2 MW (in
DL1540CL).
The vertical display processor perforos data entry into the acquisition memory, data
processing, and data transmission into the display control circuit. The hardware of the
processor is based on a type of pipeline processor, and the main functions are as
follows.
• Perform a rate reduction to 25 MHz so as to write in the data to the acquisition memory.
• Perform a data thinning data compression so that a rate reduction in accordance with the
time axis setting is made.
• Detect a data peak for the Envelope mode.
• Perform data averaging, data smoothing, and inversion processing.
• Perform calculation between the channels. (x, -, +).
The Horizontal Display Processor controls the data processing and the display circuit
depending on the time axis setting or trigger signal. The hardware is a type of pipeline
processor and the main functions are as follows.
• By dividing the sampling clock, send a timing necessary to incorporate data to the data
processing circuit.
• Create an address for the acquisition memory, and control the operation of data
incorporation or displayed data transmission.
• Calculate the trigger address and send the rearrangement data at the time of equivalence
sampling, etc. to the data processing circuit.
• Monitor the trigger occurrence frequency to control an auto-trigger, etc.
4 - 2
The time-base controller performs a distribution of sampling clock time and a selection
of trigger signal.
The time measurement section magnifies the time difference between the sampling
clock time and trigger signal in the equivalence sampling mode to perform the time
measurement precisely.
SM 701530-01E
Page 25
4.3 Digital Section
(2) CPU PCB Assembly
The CPU Board Assembly includes the display interface which is equipped with the
integrated-display processor as the main components, in addition to the CPU, memory
unit, the peripheral interface circuits for optional printer, floppy disk, keyboard, etc.
The integrated-display processor receives the waveform data processed on the ACQ
Board Assembly and generates the waveform data and the printer recording data via the
data buffer. The functions of the integrated display processor are as follows.
• Generate the waveform data for the Graphic Control Processor.
• Generate the X-Y waveform data.
• Generate and control the recording data for printer
The CPU controls the peripheral circuits for memory, key input, floppy disk, clock,
communication, etc. via the decoder & memory controller, in addition to controlling the
entire system.
(3) LCD unit
The LCD unit uses a 6.4-inch (640×480) color TFT display with backlight.
(4) Printer Assembly (option)
The printer is a thermal sensitivity type with 6 dots per mm and 640 dots per line which
prints out a hardcopy of CRT display in approx. 12 seconds.
(5) FDD Assembly
The FDD Assembly supports the formats of 640 kB, 720 kB, 1.2 MB, and 1.44 MB on
3.5-inch disk.
(6) Rear Assembly
The Rear Assembly is equipped with each connector for external trigger, external clock
signal interface, GP-IB interface, and option box.
(7) GCP PCB Assembly
Combine the graphic display (Cursor, grid, character, etc.) and the waveform data from
the integrated-display processor.
• Generate the display signal for the LCD unit and the VGA output.
• Adjust the LCD backlight brightness.
• Generate +3.3 V power
4
PRINCIPLE OF THE OPERATION (for DL1540C/DL1540CL)
SM 701530-01E
4 - 3
Page 26
4.4 Functions of Each Gate Array
The following items describe the Gate Array functions used in each assembly.
(1) Vertical Display Processor (VDP)
Performs conversion to 25 MS/s 32 bit data from 100 MS/s 8bit data.
Performs thinning or compression of display data.
Performs averaging, Smoothing, Inverting, and calculations for the each channels.
(2) Horizontal Display Processor (HDP)
Controls the VDP according to the time/div setting and trigger signal.
Performs generation of the address to ACQ memory and management of the
transmission of the display data.
Performs transmission of the rearrangement data information to the VDP.
(3) Time Base Controller (TBC)
Supplies the sampling clock for the A/D converter selection of the trigger signal source.
Controls the TEX.
(4) Time Extension (TEX)
Extends the time between the sampling clock edge and trigger signal to measure at
equivalent sampling mode.
(5) First Trigger Logic (FTL)
Performs “OR” trigger, “Parallel Pattern” trigger, “Pulse Width” trigger.
(6) Analog Frontend Controller (AFC)
Selection of the “ATT”, “Amp Gain”, “Input Coupling”, etc.
Performs generation of the offset voltage, and trigger level voltage by internal D/A
converter (PWM).
(7) Integrated Display Processor (IDP)
Performs generation of the waveform data and output signal for hardcopy printer.
Performs data handling for the waveform data (peak to peak compression, correction of
the display position etc.).
(8) Trace RAM
Keeps the wave data for the display (compressed display data).
(9) Work RAM
Keeps the wave data for the hardcopy printer.
(10) CPU I/O Interface (CIO)
Acts as interface between the CPU and each peripheral device.
Performs generation of the drive signal for the hardcopy printer motor.
Acts as key control interface.
(11) Graphic Control Processor (GCP)
Performs generation of the display signal for the LCD unit.
Performs combination of the wave data, grid data, and cursor data for image handling.
4 - 4
SM 701530-01E
Page 27
SM 701530-01E
CH 1
Coupling ATT 1 Chip Amplifier
CH 1
CH 3
Amplifier
Analog Board AssemblyATT Board Assembly
Amplifier
A/D Converter
CH 1
CH 2
Figure 4.1 Block Diagram (Analog Section)
CH 3
CH 4
AC/DC 1/1 1/10 1/100GND/MES Gain Filter [20MHz]DC/AC/Hfrej
CH 2
CH 4
Trigger Level
DC Offset
100MHz/200MHz
Comparator
TV Trigger
Analog Frontend Controler
A/D Offset
A/D Gain
Fast Trigger Logic
Trigger Board Assembly
CH 3
CH 2
CH 4
A/D Clock
Comparator
4.4 Functions of Each Gate Array
Control Signal
4 - 5
4
PRINCIPLE OF THE OPERATION (for DL1540C/DL1540CL)
Page 28
4 - 6
ACQ Board Assembly CPU Board Assembly GCP PCB Assy
ECL to TTL
CH 1
ECL to TTL
CH 3
ECL to TTL
Figure 4.2 Block Diagram (Digital Section)
CH 2
ECL to TTL
CH 4
A/D Clock
ECL to TTL
Option FRG
*
from Rear Assembly
Ch1 to 4
TV Trigger
VDP
VDP
TBC
TEX
MEMORY
MEMORY
HDP
VRAM
Accumulate
VRAM Trace RAM Work RAM
forfor
CHARACTER
GRID,CURSOR
IDP
FD Controler
CIO
PPIO
OSC
CPU
DRAM
VRAM
GCP LCD
CPU bus
Printer
D/A
Intensity
Controler
FD Drive
KEY Board Assembly
GP-IB
IF
*
to TBC
Rear Assembly
DC AC
VGA OUT
Backlight
Inverter
EXT TRIG IN
SM 701530-01E
Control Signal
Power Unit
Flash RAM
Page 29
5.1 Introduction
Chapter 5 TROUBLESHOOTING (for
DL1540C/DL1540CL)
This chapter describes the following tests.
5.1 Introduction
5.2 Flowchart
5.3 Self Test
5.3.1 Self Test (CAL)
5.3.2 Self Test (BOARD)
5.3.3 Self Test (KEY)
5.3.4 Self Test (CRT)
5.3.5 Self Test (FDD)
5.3.6 Self Test (PRINTER)
5.1 Introduction
This chapter describes possible solutions for rectifying errors.
In such cases, assembly removal may be required.
Please keep the following precautions in mind.
5
TROUBLESHOOTIN (for DL1540C/DL1540CL)
WARNING
NOTES If an error message is displayed, the error may have been caused by incorrectly
Replacing assembly is to be performed only by qualified service technicians
who are aware of the hazard involved (such as fire and electrical shock).
operating the unit.
Check the User’s Manual, and perform the correct operation.
SM 701530-01E
5 - 1
Page 30
5.2 Flowchart
“Figure 5.1 Troubleshooting flowchart” shows an analytical method for handling
trouble occurrence.
START
Power ON
Display?
YES
Message
displayed?
NO
Excute Self-test
Self-test normal
YES
Execute Performance
Test
NO
(1)
YES
(2)
NO
(3)
5 - 2
Performance test
normal?
YES
END
NO
(4)
Figure 5.1 Troubleshooting Flowchart
SM 701530-01E
Page 31
(1)
5.2 Flowchart
START
Check FUSE
FUSE OK?
YES
Check secondary side
voltage
V olta ge ON?
YES
Check Backlight
Backlight ON?
YES
NO
NO
NO
*1
*1Refer to Check Procedure of Power Supply
Voltage and System Clock
*2Turn power on while pressing [INITIALIZE] key
*3Applx. 420 V as LCD Backlight Brightness 4
Replace FUSE
Check power supply
voltage
NO
Voltage ON?
YES
(1)’
Check inverter output
voltage
*1
5
TROUBLESHOOTIN (for DL1540C/DL1540CL)
Replace power
supply unit
*3
Execute INITIALIZE
LCD display normal?
YES
NO
*2
Check VGA signal
VGA si g na l OK ?
Replace LCD unit
Voltage OK?
YES
NO
YES
NO
*4
Replace
GCP PCB Ass'y
Display OK?
Replace
inverter unit
Replace
backlight unit
NO
YES
Replace
GCP PCB Ass'y
SM 701530-01E
END
Maintenance Service is Required
Contact your nearest YOKOGAWA representative as listed on the back cover of this manual.
Figure 5.2 Troubleshooting Flowchart for Display Unit
5 - 3
Page 32
(1)’
A short may occur in an assembly other than the power supply unit.
To check in which voltage line a short has occurred, use a circuit tester and investigate
each assembly to which voltage is supplied.
Table 5.1 shows “Correspondence of Assembly to Voltage” the relationship between
assemblies and the voltages supplied to them.
Table 5.1 Correspondence of Assembly to Voltage
Voltage Series Assembly
ACQ BOARD Assembly
ATT Assembly
ANALOG BOARD Assembly
KEY BOARD Assembly
+5 V CPU PCB Assembly
GCP PCB Assembly
PRINTER Assembly
REAR Assembly
TRIG Assembly
PLOAD Assembly
ACQ BOARD Assembly
ATT Assembly
–5 V ANALOG BOARD Assembly
CPU PCB Assembly
TRIG Assembly
ANALOG BOARD Assembly
CPU PCB Assembly
+12 V GCP PCB Assembly
REAR Assembly
FUN
ANALOG BOARD Assembly
ATT Assembly
–12 V CPU PCB Assembly
GCP PCB Assembly
REAR Assembly
ANALOG BOARD Assembly
+12 Vur ATT Assembly
CPU PCB Assembly
+24 V CPU PCB Assembly
PRINTER Assembly
(2)
When trouble occurrs, refer to the instruction manual, to determine whether the trouble
is caused by erroneous operation or by a defect in the hardware. Table 5.2 shows
“Correspondence of Messages to Defective Assemblies” where trouble may be due to a
hardware failure.
Table 5.2 Correspondence of Messages to Defective Assemblies
Message Assembly
602 No floppy disk inserted.
604 Storage media is defective.
605 File not found. FDD Assembly
615 Formatting error.
646-654 Storage media is defective.
707 The roll chart is not secured.
708 No roll chart. PRINTER Assembly
709 Printer is overheating. Turn OFF the power immediately.....
712 No printer installed.
719 Calibration Error! ANALOG BOARD Assembly
ATT Assembly
723 Low temperature error has been detected in printer. PRINTER Assembly
900 The back-up lithium battery has run out. The back-up ...... CPU PCB Assembly
901 Cooling fan has stopped .Turn OFF the power immediately. Fan
902 Flash Memory Erase Error. CPU PCB Assembly
903 Flash Memory Write Error.
5 - 4
SM 701530-01E
Page 33
(3)
5.2 Flowchart
When trouble occurrs, check the test item displaying FAIL and select the relevant
defective item from Table 5.3 shows “Correspondence of Test Items to Defective
Assemblies”. If necessary, replace the defective assembly.
Table 5.3 Correspondence of Test Items to Defective Assemblies
Test Item Assembly
CAL ATT Assembly
ANALOG BOARD Assembly
ACQ BOARD Assembly
BOARD CPU PCB Assembly
GCP PCB Assembly
ANALOG BOARD Assembly
ACQ BOARD Assembly
REAR PANEL BOARD Assembly
LCD LCD UNIT
CPU PCB Assembly
GCP PCB Assembly
FDD FDD Assembly
CPU PCB Assembly
PRINTER PRINTER Assembly
CPU PCB Assembly
5
TROUBLESHOOTIN (for DL1540C/DL1540CL)
(4)
When trouble occurrs, check the nonconforming test item and select the relevant
defective assembly from Table 5.4 shows “Correspondence of Test Items to Defective
Assemblies”. If necessary, replace the defective assembly.
Table 5.4 Correspondence of Test Items to Defective Assemblies
Test Item Assembly
2.4 Vertical Axis DC Voltage Accuracy Test ATT Assembly
ANALOG BOARD Assembly
ACQ BOARD Assembly
2.5 Frequency Response Test ATT Assembly
ANALOG BOARD Assembly
2.6 Time-base Accuracy Test ACQ BOARD Assembly
2.7 Trigger Sensitivity Test ATT Assembly
ANALOG BOARD Assembly
2.8 Trigger Accuracy Test ATT Assembly
ANALOG BOARD Assembly
SM 701530-01E
5 - 5
Page 34
5.3 Self Test
After turning the power on, press the [MISC] key and select the {To NextMenu} &
{SelfTest...} options to call up the display of “Figure 5.3 Self test item”.
Figure 5.3 Self Test Item
In addition, each of the execution items is popped up by selecting the {SelfTest} item
(refer to Figure 5.4 “Self Test Item”). After selecting the execution item, the selected
item can be tested by pressing the {EXEC}.
5 - 6
Figure 5.4 Self Test Item
SM 701530-01E
Page 35
5.3.1 Self Test (CAL)
The calibration is performed and its result is displayed.
5.3.1 Self Test (CAL)
5
TROUBLESHOOTIN (for DL1540C/DL1540CL)
Figure 5.5 Execution Results of Calibration (Under Normal Conditions)
Figure 5.6 shows examples where calibration results are abnormal.
SM 701530-01E
Figure 5.6 Execution Results of Calibration (When Abnormality is Present)
5 - 7
Page 36
5.3.2 Self Test (BOARD)
The gate arrays, peripheral ICs, and RAM chips on each printed board assembly are
tested and the results are displayed (refer to Figure 5.7).
5.3.3 Self Test (KEY)
Check the operations of the LEDs, key-switches, and rotary knobs on the front panel.
1) “LED Testing” is displayed on the LCD and the LEDs on the front panel (8 LEDs
excluding Trig’d) automatically light up in sequence.
2) Illustration of the front panel is then displayed on the LCD. By operating the keys and
the rotary knob, the corresponding displays on the LCD are highlighted.
Figure 5.7 Execution Results of Self Test (BOARD)
5 - 8
SM 701530-01E
Page 37
5.3.4 Self Test (CRT)
The following contents are displayed. These displays are switched by pressing the
option keys.
1) The frames for display areas on LCD is displayed.
A frame is displayed on the LCD.
2) The panel patterns with are different brightness and color displayed.
Screen patterns of different intensity are displayed.
The entire screen is displayed in white.
3) The characters used on the DL1540C/DL1540CL series are displayed.
5.3.4 Self Test (CRT)
5
TROUBLESHOOTIN (for DL1540C/DL1540CL)
5.3.5 Self Test (FDD)
The Read/Write test is performed for each of the 1.44 MB/1.2 MB/720 KB formatted
disks.
1) Insert each formatted disk into the FDD and select the {exec} option. “FDD Read” is
displayed and the read test is performed. When the test has been completed normally,
“Pass” is displayed on the LCD.
2) Subsequently, “FDD Write” is displayed and the write test is performed.
When the test has been completed normally, “Pass” is displayed on the LCD.
The inserted disk type is also displayed at the same time.
Figure 5.8 Display Area Frames
SM 701530-01E
Figure 5.9 Self Test (FDD) Window
5 - 9
Page 38
5.3.6 Self Test (PRINTER)
Where the DL1540C/DL1540CL series is equipped with the optional printer (/B5), print
out the patterns shown in “Figure 5.10 Printer print patterns” on the printing paper.
1) Checkered pattern every other 2 dots.
2) Vertically printed lines on alternate dots.
3) Checkered pattern every other 10 dots.
For the software version before 1.32.
5 - 10
Figure 5.10 Printer Print Patterns
SM 701530-01E
Page 39
B9918EA
(Opt./B5)
PRINTER ASSY
B9918LG
CAL
B9918LB
KEY BOARD ASSY
GND
(Opt./F1)
TRG ASSY
B9918TC
B9918KF
ATT ASSY
B9918TD
B9918TE
B9918TB
B9918KP
LOAD
ASSEMBLY
B9918SB
B9918SD
B9918LE
ANALOG
BOARD
ASSY
B9918TBx2
B9918SA
B9918TF
FAN ASSY
A1123EM
A1360JS
INLET with FUSE
Noise
Filter
GP-IB Option I/F
CN14
CN1
CN5
CN1 CN4
CN4001CN1001 CN2001 CN3001
CN3CN2
CN8
CN4
CN3 CN2
CN6CN7
CN4 CN5
CN3 CN2
CN1
CN1
CN2
CN3
CN6
CN7
ExtTrig./Clock
Trig. Out
CN9
CN5
CN7
CN4
CN549
CN1
CN1
CN11
CN8
SW
LGN
A1211SB
A1139EN
CN12CN10
CN20
CN424
B9957LB
B9957SA
(Opt./V1)
GCP PCB ASSY
B9918EC
FDD UNIT
B9957KC
REAR ASSY
B9957KA
B9918YA
POWER UNIT
CPU PCB ASSY
B9918KQ
ACQ LONG1 ASSY
CHASSIS
CN9CN10
CN4CN3
CN4 CN2
CN1
CN1
CN3
CN2
CN2CN3
CN1
CN1
A1212WF
FERRITE
B9914ZF
FERRITE
A9914MN
LCD-CN BD ASSY
VGA OUT
B9958LD
A1468UP
INVERTER
A1056VA
LCD UNIT
B9957SB
Chapter 6 SCHEMATIC DIAGRAM
Chapter 6 SCHEMATIC DIAGRAM (for
DL1540C/DL1540CL)
6
SCHEMATIC DIAGRAM (for DL1540C/DL1540CL)
SM 701530-01E
6 - 1
Page 40
B9918EA
(Opt./B5)
PRINTER ASSY
B9918LG
CAL
B9918LB
KEY BOARD ASSY
GND
(Opt./F1)
TRG ASSY
B9918TC
B9918KF
ATT ASSY
B9918TD
B9918TE
B9918TB
B9918SB
B9918SD
B9918LE
ANALOG
BOARD
ASSY
B9918TBx2
B9918SA
B9918TF
FAN ASSY
A1123EM
A1360JS
INLET with FUSE
Noise
Filter
GP-IB Option I/F
CN14
CN1
CN5
CN1 CN4
CN4001CN1001 CN2001 CN3001
CN3CN2
CN8
CN4
CN3 CN2
CN6CN7
CN4 CN5
CN3 CN2
CN1
CN1
CN2
CN3
CN6
CN7
ExtTrig./Clock
Trig. Out
CN9
CN5
CN7
CN4
CN549
CN1
CN1
CN11
CN8
SW
LGN
A1211SB
A1139EN
CN12
CN424
B9957LB
B9957SA
(Opt./V1)
GCP PCB ASSY
B9918EC
FDD UNIT
B9957KC
REAR ASSY
B9957LA
B9918YA
POWER UNIT
CPU PCB ASSY
B9918LD
ACQ BOARD ASSY
CHASSIS
CN9CN10
CN4CN3
CN4
CN2
CN1
CN1
CN3
CN2
CN2CN3
CN1
CN1
A1212WF
FERRITE
B9914ZF
FERRITE
A9914MN
LCD-CN BD ASSY
VGA OUT
B9958LD
A1468UP
INVERTER
A1056VA
LCD UNIT
B9957SB
6 - 2
SM 701530-01E
Page 41
Chapter 7 CUSTOMER MAINTENANCE PARTS LIST
Chapter 7 CUSTOMER MAINTENANCE
PARTS LIST
This chapter contains the Customer Maintenance Parts Lists for ordering parts and
location of the parts in the instrument.
7.1 Standard Accessories (for DL1500C Series)
7
CUSTOMER MAINTENANCE PARTS LIST
SM 701530-01E
7 - 1
Page 42
24
21
22
23
20
19
17
16
15
14
1312
4
3
2
1
56 7
8
10
9
11
18
7 - 2
SM 701530-01E
Page 43
Item
1
2
Part No.
A9102ZG
Qty
1
Description
Knob
Front Bezel1B9957DE
F-Key Assembly1B9918DL3
Sheet (701530)1B9957CG4
Sheet (701540)1B9957CM
(select)
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21
22
23
24
- 1 DL1500 Sub Assembly (see page 4)
Knob1A9080ZG
Knob1A9115ZG
Sheet1B9918CH
Terminal2A1490JT
B.H.Screw,M3x62Y9306LB
Spring2B9918CC10
Sheet1B9918EP
Stopper (Standard Accessories)(see page 6)2A9088ZM
Bottom Frame1B9918BW
Bottom Cover1B9918EN
Bottom Plate4B9918BX
Support1B9918CF
Sheet1B9957CL
Sheet (/V1)1B9957CP
1B9918ES
Sheet
Sheet (/B5)1B9918CY
B.H.Screw,M4x84Y9408LB
Printer Cover1B9918DW
Clamp1B9858GB
Top Cover1B9957EM
(select)
7
CUSTOMER MAINTENANCE PARTS LIST
SM 701530-01E
7 - 3
Page 44
DL1500C Sub Assembly
29
30
26
25
2324
27
31
1819202122
1
28
2
3
4
16
5
17
15
14
13
6
36
78
910
32
12
11
35
7 - 4
34
33
SM 701530-01E
Page 45
Item
1
2
6
7
8
9
Part No.
A1056VA
Qty
1
Description
LCD
Screw4Y9204LB
Multiconductor1A1212WF3
Power Unit1B9918YA4
ACQ Board Assembly (701530)1B9918LD5
(select)
ACQ LONG1 Assembly (701540)1B9918KQ
Memory System1A1092UN
Key Board Assembly1B9918LB
Rod1B9918BT
Cable1B9918TE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
B9918LE
32
B9918EQ
33
B9918EU
34
B9918ET
35
36 B9918KP 1 Load Assembly (701540)
ATT Assembly1B9918KF
Cable1B9918TB
TRG Assembly (/F1)1B9918KG
Cable1B9918TF
Cable2B9918TB
CPU PCB Assembly (701530)1B9957LA
CPU PCB Assembly (701540)1B9957KA
B.H.Screw,M3x64Y9306LB
Fan Assembly1A1123EM
Socket and Holder1A1360JS
Screw2Y9305EB
Rear Assembly1B9957KC
Noise Filter Assembly1B9918SK
GCP Board Assembly1B9957LB
B.H.Screw,M3x63Y9306LB
Printer Assembly (/B5)1A1194UD
Blind Plate (not /B5)1B9918BQ
Push Switch1A1211SB
Retainer E1Y9250ET
Handle1B9918DS
Power Supply1A1468UP
Cable1B9918TC
Cable (/F1)1B9918TD
Fuse2A1351EF
Analog Board Assembly
1
Sheet
1
Spring
6
Rivet
12
(select)
(select)
7
CUSTOMER MAINTENANCE PARTS LIST
SM 701530-01E
7 - 5
Page 46
Standard Accessories
7
1
2
3
8
4
9
5
10
11
6
Item
Part No.
1
A1006WD
2
3 A1009WD 1 Power Supply Code (VDE standard) *3
A1054WD
4
A1024WD
5
A9088ZM
6
700996
7
B9850NX
8
9 -
B9918EZ Soft Case10
Qty
Description
1
Power Supply Code (UL.CSA standard) *1.*2
3P-2P Adapter *11A1253JZ
Power Supply Code (BS standard) *4
1
Power Supply Code (SAA standard) *5
1
Stopper
2
Probe
2
Probe (/E1)2700996
1
Roll Chart (/B5)
1 Instruction Manual
1
Front Cover1B9957DG11
7 - 6
Note:
*1
*2
*3
*4
*5
7015 0 - -M
7015 0 - -D
7015 0 - -F
7015 0 - -Q
7015 0 - -R
SM 701530-01E
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