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.
INTRODUCTION This manual contains information for servicing the YOKOGAWA Digital Scope DL708E. Note This manual is the first edition, September 1998. 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.
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To prevent an electric shock or fire, be sure to use the power cord supplied by YOKOGAWA. The main power plug must be plugged in an outlet with protective earth terminal. Do not invalidate protection by using an extension cord without protective grounding.
Describes procedures for troubleshooting and how to handle in case parts need to be replaced. SCHEMATIC DIAGRAM Describes the system configuration diagram. 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 701820- 01E. SM 701820-01E...
Temperature Module (701860) Adjustment ................. 3-14 Logic Input Module (701870) Adjustment ................3-15 Chapter 4 PRINCIPLE OF OPERATION ....................4-1 Introduction ..........................4-1 Main Unit (701820) ........................ 4-1 Modules ..........................4-3 Functions of Each Gate Array ....................4-4 SM 701820-01E...
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TROUBLESHOOTING ....................... 5-1 Introduction ..........................5-1 Flow Chart ..........................5-2 Self Test ..........................5-5 Chapter 6 SCHEMATIC DIAGRAM ......................6-1 Chapter 7 CUSTOMER MAINTENANCE PARTS LIST ................7-1 Customer Maintenance Parts List ..................7-1 Standard Accessories ......................7-5 SM 701820-01E...
1.1 Introduction / 1.2 Safety Consideration Chapter 1 GENERAL INFORMATION 1.1 Introduction This manual describes servicing information on YOKOGAWA Digital Scope DL708E. This chapter contains information required for using this manual and information that must be known before starting servicing of the DL708E.
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Yokogawa B9879PX Converting to alligator clip Test equipment for 701880 (Strain module) Equipment Qty Mandatory specifications Recommended Remarks DC accuracy : ±0.03% with Yokogawa 7651 DC voltage/current — generator limiter for voltage and current ±0.2 dB : 100 kHz or less...
(1) Turn on the power source. (2) Press the MISC key and press the “OVERVIEW” soft key. (3) Confirm that the modules and options are recognized correctly. * The model of the main unit can be confirmed on the nameplate. (cf. 701820-1/M/M1/ [Display] Model : Model name of the main unit (“DL708E”...
(3) Execute AUTO SETUP. Press the SETUP key, then press the “Auto Setup” soft key. [Confirmation] Confirm that the COMP signal makes following waveform. 1 kHz ±10% Frequency : 1 V ±10% Amplitude : * Perform the phase compensation when 10:1 probe is connected. SM 701820-01E...
Confirm that the following is printed out. 2.8 Internal Memory Self-diagnosis (1) System memory test (Main memory, back-up memory, and ROM sum check) (2) Acquisition memory test (Standard and extended memory (/M1, /M2, or /M3)) [Equipment required] None SM 701820-01E...
(6) To stop the key test, press the SHIFT+ESC key. [Confirmation] Perform the key operations prompted by a blinking menu item and confirm that the blinking item shifts one by one. * Operate the shuttle ring very slowly when confirming the Shuttle Left / Right function. SM 701820-01E...
(3) Press the “Self test” soft key to display the self test menu. (4) Press the “Test Item” soft key and select “HDD.” (5) Pressing the “Exec” soft key will start the test. [Confirmation] Confirm that the test is passed. (“Write pass” is displayed.) SM 701820-01E...
Freq (3) Set the synthesized signal generator as shown below. Sine wave Amplitude 400 mVpp Frequency 1.0005 MHz [Confirmation] The measured frequency of the beat waveform on screen by using MEASURE must be 500 Hz ± 45 Hz. SM 701820-01E...
±0.04% of offset voltage range + 1% of set value [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter —...
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T/DIV Normal V/DIV 5 mV/div Channel to be tested ↓ Positon 0 div ↓ Coupling ↓ Bandwidth Full ↓ Offset 0 mV ↓ MEASURE PP(Peak to Peak) [Confirmation] Check that the measured value is within 800 µVp-p. SM 701820-01E 2-10...
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(offset voltage accuracy = ±0.04% offset voltage range + 1% of set value) [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter —...
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DL708E settings Standard signal generator DL708E Power meter T/DIV Frequency Measured value PP Measured value (W) 10 µs/div(10 MS/s) 100 kHz <1> <3> ↓ 2.002 MHz <2> <4> Calculation Judgment 20log(<2>/<1>) – 10log(<4>/<3>) –3.0 dB or lower SM 701820-01E 2-12...
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The above connection is provided for explanatory purpose. To avoid a risk of high voltage, please prepare a jig which has no exposed live- wire. * The high-speed module (701851) cannot be used for the withstand voltage test. SM 701820-01E 2-13...
±0.04% of offset voltage range + 1% of set value [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter —...
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T/DIV Normal V/DIV 5 mV/div Channel to be tested ↓ Positon 0 div ↓ Coupling ↓ Bandwidth Full ↓ Offset 0 mV ↓ MEASURE PP(Peak to Peak) [Confirmation] Check that the measured value is within 600 µVp-p. SM 701820-01E 2-15...
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(offset voltage accuracy = ±0.04% of offset voltage range + 1% of set value) [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter —...
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DL708E settings Standard signal generator DL708E Power meter T/DIV Frequency Measured value PP Measured value (W) 10 µs/div(10 MS/s) 100 kHz <1> <3> ↓ 4.004 MHz <2> <4> Calculation Judgment 20log(<2>/<1>) – 10log(<4>/<3>) –1.0 dB or lower SM 701820-01E 2-17...
±(1% of 8 div) at 50 mV/div [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter — Yokogawa 366922...
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1 ms/div Normal V/DIV 200 mV/div Channel to be tested ↓ Positon 0 div ↓ Coupling ↓ Bandwidth Full ↓ Offset 0 mV ↓ MEASURE PP(Peak to Peak) [Confirmation] Check that the measured value is within 5 mVp-p. SM 701820-01E 2-19...
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±(1% of 8 div) at 50 mV/div [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter — Yokogawa 366922...
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1 ms/div(100 kS/s) 50 mV/div 100 Hz <1> ↓ ↓ 30.1 kHz <2> ↓ 10 V/div 100 Hz <3> ↓ ↓ 40.1 kHz <4> Calculation Judgment 20 log(<2>/<1>) –3.0 dB or lower 20 log(<4>/<3>) –3.0 dB or lower SM 701820-01E 2-21...
Be sure not to touch the live-wire. The above connection is provided for explanatory purpose. To avoid a risk of high voltage, please prepare a jig which has no exposed live- wire. SM 701820-01E 2-22...
±(1% of 8 div) at 5 mV/div [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter — Yokogawa 366922...
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1 ms/div Normal V/DIV 5 mV/div Channel to be tested ↓ Positon 0 div ↓ Coupling ↓ Bandwidth Full ↓ Offset 0 mV ↓ MEASURE PP(Peak to Peak) [Confirmation] Check that the measured value is within 100 µVp-p. SM 701820-01E 2-24...
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±(1% of 8 div) at 5 mV/div [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter — Yokogawa 366922...
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Measured value PP 1 ms/div(100 kS/s) 5 mV/div 100 Hz <1> ↓ ↓ 30.1 kHz <2> ↓ 1 V/div 100 Hz <3> ↓ ↓ 40.1 kHz <4> Calculation Judgment 20log(<2>/<1>) –3.0 dB or lower 20log(<4>/<3>) –3.0 dB or lower SM 701820-01E 2-26...
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Be sure not to touch the live-wire. The above connection is provided for explanatory purpose. To avoid a risk of high voltage, please prepare a jig which has no exposed live- wire. SM 701820-01E 2-27...
J, E, and U using on this test. [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter —...
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(2) Set the DL708E as shown below. Record Length 100 kW T/DIV 100 mV/div Type Channel to be tested °C ↓ Unit ↓ Bandwidth 2 Hz ↓ ↓ MEASURE Avg (Average) [Confirmation] Check that the measured value is within ±2.5 °C. SM 701820-01E 2-29...
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Check that the measured value is within the range as specified in the table below. Standard signal generator DL708E settings Frequency Bandwidth Measured value PP 809 to 1003 °C 50 Hz Full ↓ 1.6 °C or less 2 Hz SM 701820-01E 2-30...
(2) Set the DL708E as shown below. Record Length 1 kW T/DIV 10 ms/div (3) Set the AC voltage generator as shown below. Square wave Amplitude 30 VAC Frequency 50 Hz [Confirmation] Confirm that 50-Hz square waves appear for all bits. SM 701820-01E 2-31...
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5 Vp-p Offset 2.5 V (5) Set the high-speed module 701851 as shown below. Probe 1 : 1 V/DIV 2 V/div [Confirmation] Check that the falling edge of the logic waveform appears within ±1µs of the trigger point. SM 701820-01E 2-32...
Response Time Test for DC Inputting (701870 & 700987) [Specifications] 1 ms or less [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks 250 VAC ± 0.03% AC voltage generator 1 Yokogawa wavetek 9100 — Isolation logic probe — Yokogawa 700987 — High-speed module — Yokogawa 701851 —...
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Response Time Test for AC Inputting (701870 & 700987) [Specifications] 20 ms or less [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks 250 VAC ± 0.03% AC voltage generator 1 Yokogawa wavetek 9100 — Isolation logic probe — Yokogawa 700987 — High-speed module — Yokogawa 701851 —...
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6V ± 50% (when H level is 9 V or more and L level is 3 V or less) [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks 9 VDC ± 0.03% DC voltage generator 1 Yokogawa wavetek 9100 — Isolation logic probe — Yokogawa 700987 — Measurement lead —...
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50VAC ± 50% (when H level is 75 VAC or more and L level is 25 VAC or less) [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks 75 VAC ± 0.03% AC voltage generator 1 Yokogawa wavetek 9100 — Isolation logic probe — Yokogawa 700987 — Measurement lead —...
Maximum Input Voltage Test (701880) [Specifications] 5 V (DC+ACpeak) [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy : ±0.03% with Yokogawa 7651 DC voltage / current — generator limiter for voltage and current Shielded cable Two cores shielded cable —...
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(3) Allow +1 mA to flow between Input– (pin B) and Floating common (pin E), and check that the voltage limit of the DC source operates. (4) Allow –1 mA to flow between Input– (pin B) and Floating common (pin E), and check that the voltage limit of the DC source operates. SM 701820-01E 2-38...
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*1 See User's Manual IM701820-01E for the operating procedures on calibration and balancing. *2 Confirm that no error messages appear after the calibration. *3 Confirm that “Automatic balancing is complete” appears on the screen when the balancing completes. SM 701820-01E 2-39...
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< <F Sense– < <G DC voltage generator H output terminal Bridge– < <C Shielded cable Input+ < <D Input– < <B L output terminal Floating common < <E Connected to shield wire Case (connector shell) G terminal SM 701820-01E 2-40...
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27000 / –27000 (Only perform balancing) 26 50.00 × SF ↓ ↓ ↓ ↓ 19560 to 20440 ↓ ↓ ↓ ↓ 27 0.000 –440 to 440 28 –50.00 × SF ↓ ↓ ↓ ↓ –20440 to –19560 SM 701820-01E 2-41...
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↓ Excitation ↓ Gauge Factor 2.00 ↓ Bandwidth Full ↓ MEASURE PP(Peak to Peak) (4) Perform balancing. (5) Set the standard signal generator as shown below. Sine wave Frequency According to settings below Amplitude 100 mVp-p Offset SM 701820-01E 2-42...
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Standard signal generator DL708E Frequency Measured value PP Calculation Judgement 100 Hz <1> — — 1 ± 0.02 1 kHz <2> <2>/<1> 20 kHz <3> 20log(<3>/<1>) –1.5 to –3 dB 200 kHz <4> 20log(<4>/<1>) –30 dB or lower SM 701820-01E 2-43...
Equipment for 701850 / 701851 (High-Speed Isolation module / High-Speed module) Equipment Qty Mandatory specifications Recommended Remarks DC accuracy : ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 Yokogawa wavetek 9100 or Yokogawa 7651 offers complete compatibility. ±0.5 dB : 10 MHz or less Standard signal Yokogawa FG200 —...
Equipment for 701870 (Logic Input Module) Equipment Qty Mandatory specifications Recommended Remarks DC accuracy : ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — 50 VAC ± 0.03% AC voltage generator 1 Yokogawa wavetek 9100 — Special purpose Isolation logic probe Yokogawa 700987 Test includes logic probe.
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3.4 High-Speed Isolation Module (701850) Adjustment (4) Adjust the RV30 channel to be tested so that the measured value becomes 5 V ± 5 High-speed isolation module Adjustment point location diagram RV31 CV101 CV100 RV30 CV1 to 4 SM 701820-01E...
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(4) Adjust the CV5 channel to be tested so that the rising point of the waveform becomes flat as shown in the figure below. (Flatness: amplitude ±1% or less) Adjust CV5 so that this rising point reaches an amplitude of ±1% or less. Waveform rising point SM 701820-01E...
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600 mVp-p (FG settings: 1/10, 6 Vp-p) (4) Adjust the CV1 and CV2 channels to be tested so that the rising point of the waveform becomes flat, refer to the figure in the preceding page. (Flatness: amplitude ±1% or less) SM 701820-01E...
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1 kHz Amplitude 6 Vp-p (4) Adjust the CV3 and CV4 channels to be tested so that the rising point of the waveform becomes flat, refer to the figure in the preceding page. (Flatness: amplitude ±1% or less) SM 701820-01E...
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100 kHz (9) Determine the value at 100 kHz and 2.003 MHz. (10) Check that the value made up of 20Log (DATA (at 100 kHz)/DATA (at 2 MHz)) is within the range from +0.5 dB to –2.5 dB. SM 701820-01E...
Coupling ↓ Bandwidth Full ↓ Offset 0 mV (3) FG settings Output Waveform Sine wave Frequency 100 kHz Amplitude 100 Vrms (4) Adjust CV101 so that the waveform of the main unit jig tube surface reaches a minimum. SM 701820-01E...
DAC (D/A converter) Span (701851) Adjustment [Equipment required] Equipment Qty Mandatory specifications Recommended Remarks DC accuracy : ±0.03% DC voltage generator 1 Yokogawa wavetek 9100 — BNC-BNC cable 1 m or less Yokogawa 366924 — Conversion adapter — Yokogawa 366922...
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3.5 High-Speed Module (701851) Adjustment (4) Adjust the RV30 channel to be tested so that the measured value becomes 5 V ± 5 High-speed module Adjustment point location diagram RV30 CV1 to 2 SM 701820-01E 3-10...
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(4) Adjust the CV5 channel to be tested so that the rising point of the waveform becomes flat as shown in the figure below. (Flatness: amplitude ±1% or less) Adjust CV5 so that this rising point reaches an amplitude of ±1% or less. Waveform rising point SM 701820-01E 3-11...
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600 mVp-p (FG settings: 1/10, 6 Vp-p) (4) Adjust the CV1 and CV2 channels to be tested so that the rising point of the waveform becomes flat, refer to the figure in the preceding page. (Flatness: amplitude ±1% or less) SM 701820-01E 3-12...
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Frequency 1 kHz Amplitude 6 Vp-p (4) Adjust the CV4 channel to be tested so that the rising point of the waveform becomes flat, refer to the figure in the preceding page. (Flatness: amplitude ±1% or less) SM 701820-01E 3-13...
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DL708E screen (display only for the 1 bit) The rectangular wave should be displayed. Display waveform L level of display form Isolation logic probe AC adjustment Adjustment point location diagram R023 R052 R082 R112 R173 R202 R232 R262 SM 701820-01E 3-17...
Functions of the various gate arrays used for DL708E are also briefly described. 4.2 Main Unit (701820) This section describes functions of the main unit of DL708E (701820). The block diagram of the 701820 is shown on the next page.
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4.2 Main Unit (701820) (8) SCSI CONNECT Assembly (optional) External connector and terminator for SCSI are installed. (9) SCSI DCDC Assembly (optional) Power supply board of HDD to change from 24 VDC to 12 VDC. (10) LCD Assembly 10.4 inch TFT LC display. Full display resolution: 640 × 480. Waveform display resolution: 501 ×...
This is a small sized CMOS IC. A variable gain amplifier, filter and AD converter ,etc. are incorporated in one chip. Temperature Module Interface Controller (701860) This is a small sized CMOS gate array. This is used for parallel conversion of serial data from the analog section and interface with the CPU. SM 701820-01E...
(such as fire and electrical shock). Note If an error message is displayed, the error may have been caused by incorrect operation of the unit. Check the User’s Manual, and perform the correct operation. SM 701820-01E...
5.2 Flow Chart 5.2 Flow Chart START Power ON Display? Message displayed? Excute Self-test Refer to section 5.3. Self-test normal Execute Performance Test Performance test SM 701820-01E...
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Check power supply Voltage OK? voltage Replace power Voltage OK? supply unit (1)’ Execute INITIALIZE LCD display normal? Check video signal Video signal OK? LCD Display Replace LCD Unit Replace Replace CPU LCD Assembly Assembly Maintenance Service is required. SM 701820-01E...
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Media failure. Media is protected. FDD Assembly 611 and 612 Media is full. Floppy Disk File is damaged. 646-654 Media failure. Data backup failure. Initialization is performed. Battery Check the state of the battery. Fan stopped. Turn off immediately. SM 701820-01E...
2.11 Built-in HDD Test CPU Board SCSI DCDC Board 5.3 Self Test Self-diagnosis of Built-in Printer Refer to Section 2.7. Self-diagnosis of Internal Memory Refer to Section 2.8. Self-diagnosis of Keyboard, Jog Shuttle, and Rotary Knob Refer to Section 2.9. SM 701820-01E...
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system system option: included B9947BD option option...
7.1 Customer Maintenance Parts List Chapter 7 CUSTOMER MAINTENANCE PARTS LIST Customer Maintenance Parts List Standard Accessories 7.1 Customer Maintenance Parts List SM 701820-01E...
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