Wang 2436DW Product/Maintenance Manual Download Page 2

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Summary of Contents for 2436DW

Page 1: ...WANG 3401 2436DW DE INTERACTIVE TERMINAL Custcmer Engineering Product Maintenance Manual COMPANY CONFIDENTIAL 741 1727...

Page 2: ...s manual is to provide instructions to operate trouble shoot and repair the 2436DW DE Interactive Terminal It will be updated on a regular schedule First Edition April 1986 This is the first edition o...

Page 3: ...bits INSTRUCTIONS Remove and insert attached pages and or microfiche as follows 1 2 3 4 5 6 7 8 9 10 1 2 3 4 REM O_VE PA_G E S I_NS _E_R_T PA_G_E_S 9 7 9 8 12 1112 2 9 7 9 8 12 1 12 2 REM OVE F IC HE...

Page 4: ...tricted solely to assisting you in servicing Wang products Neither this document nor its contents may be disclosed copied revealed or used in whole or in part for any other purpose without the prior w...

Page 5: ...ICATORS Page 3 1 OPERATOR CONTROLS __________________________________________ 3 1 3 1 1 Electronics Base Unit Front Panel Controls ________________________ 3 1 3 1 2 Electronics Base Unit Rear Panel C...

Page 6: ...1 T DIAGNOSTIC PROCEDURE _______________ 4 1 4 2 POWER DOWN PROCEDURE 4 2 SECTION 5 PREVENTIVE MAINTENANCE Page 5 1 MATERIALS REQUIRED 5 1 5 2 PM SCHEDULE 5 2 5 3 CLEANING L ND INSPECTION 5 3 S 4 CHE...

Page 7: ...3 3 Power up and Screen Alignment __________________________________ 6 8 6 3 4 Power up and Burn In Mode 6 9 6 3 5 Keyboard Test 6 10 6 3 6 Diagnostic Override 6 11 SECTION 7 REPAIR Page 7 1 TOOLS AN...

Page 8: ...9 3 9 3 1 Unpacking and Inspecting Electronics Base_________________________ 9 3 9 3 2 Unpacking and Inspecting Monitor 9 4 9 3 3 Unpacking and Inspecting Keyboard 9 5 9 4 SWITCH SETIINGS____________...

Page 9: ...BLOCK DIAGRAM DESCRIPTION 10 2 11 1 EQUIPMENT SECTION 11 SPECIFICATIONS SECTION 12 ILLUSTRATED PARTS Page 11 1 Page 12 1 MAJOR ASSEMBLIES 12 1 12 1 1 System Components ________________________________...

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Page 11: ...SECTION 1 CONTENTS SECTION 1 INTRODUCTION Page 1 1 SCOPE AND PURPOSE 1 1 1 2 ORGANIZATION AND LAYOUT 1 2 741 1727 COMPANY CONFIDENTIAL...

Page 12: ...e parts Model DW of the 2436 is capable of both data processing and word processing Model DE performs data processing only For simplicity the 2436DW is described in this manual The information however...

Page 13: ...d Also all or most of the information pertaining to a specific task is located on a single frame Each frame in turn contains illustrations numbered steps and or text describing the individual steps re...

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Page 15: ...SECTION 2 CONTENTS SECTION 2 IDENTIFICATION Page 2 1 MAJOR ASSEMBLIES 2 1 2 2 ELECTRONICS BASE UNIT MAJOR PARTS 2 2 741 1727 COMPANY CONFIDENTIAL...

Page 16: ...IDENTIFICATION 2 1 Major Assemblies VIDEO MONITOR 741 1727 Page 2 1 COMPANY CONFIDENTIAL...

Page 17: ...2 2 IDENTIFICATION Electronics Base Unit Major Parts CPU PRINTED CIRCUIT ASSEMBLY SWITCHING POWER SUPPLY 741 1727 Page 2 2 COMPANY CONFIDENTIAL...

Page 18: ...I...

Page 19: ...________________________ 3 1 Electronics Base Unit Front Panel Controls________________________ 3 1 Electronics Base Unit Rear Panel Controls_________________________ 3 2 Video Monitor Front Panel Con...

Page 20: ...trols Item Name Type Function 1 _____ Power On Switch ____ AC power rocker type switch Pressing 11 1 applies ac power to base unit which energizes all Terminal assemblies Pressing 11 011 removes ac po...

Page 21: ...ne voltage shown in 115 vac position 2 _____ Speaker _____________ Potentiometer adjusts audio level of Terminal alarm which indicates errors or special conditions lllr 8 2 1 3 _____ Keyboard Clicker...

Page 22: ...ATORS Operator Controls 3 1 3 Video Monitor Front Panel Controls 0 Item Name Type Function 1 _____ Brightness ___________ Slider type potentiometer adjusts brightness of video display 741 1727 Page 3...

Page 23: ...rd typewriter keys consisting of alphanumeric and special purpose characters 2 _____ Zone 2 Keys _________ Cursor control and editing keys 3 _____ Zone 3 Keys _________ Numeric keypad standard 10 key...

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Page 25: ...SECTION 4 CONTENTS SECTION 4 OPERATION Page 4 1 POWER UP AND 8 1 T DIAGNOSTIC PROCEDURE _______________ 4 1 4 2 POWER DOWN PROCEDURE 4 2 741 1727 COMPANY CONFIDENTIAL...

Page 26: ...r Up and 8 1 T Diagnostic Procedure II Press 11 1 on electronics base ac power switch fJ Power up 8 1 T diagnostic is executed resulting in a normal operating display or 8 1 T error code lllf 6 3 2 Pa...

Page 27: ...4 2 741 1727 OPERATION Power Down Procedure 8 Press O on electronics base ac power switch Page 4 2 COMPANY CONFIDENTIAL...

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Page 29: ...SECTION 5 CONTENTS SECTION 5 PREVENTIVE MAINTENANCE Page 5 1 MATERIALS REQUIRED 5 1 5 2 PM SCHEDULE 5 2 5 3 CLEANING AND INSPECTION 5 3 5 4 CHECKS AND ADJUSTMENTS 5 4 741 1727 COMPANY CONFIDENTIAL...

Page 30: ...5 1 PREVENTIVE MAINTENANCE Materials Required The CE tool kit and a DVM are required to perform preventive maintenance on the 2436DW interactive terminal 741 1727 Page 5 1 COMPANY CONFIDENTIAL...

Page 31: ...EVENTIVE MAINTENANCE PM Schedule Preventive maintenance should be performed on a regular semi annual basis to help prevent degradation and terminal equipment failures 741 1727 Page 5 2 COMPANY CONFIDE...

Page 32: ...nterior Cleaning D Power down terminal and remove ac cord from wall outlet fJ Remove top cover from base unit lllr 7 2 1 EJ Vacuum interior of base unit D Clean 1 0 cable connectors Inspection D Check...

Page 33: ...ENANCE Adjustments Mechanical None Required Electrical 0 Base unit speaker and keyboard clicker lllr 8 2 1 8 CRT video monitor board Refer to Product Maintenance Manual 741 742 1647 741 1727 Page 5 4...

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Page 35: ...er up Diagnostics ____________________________________________ 6 6 6 3 2 Power up Error Codes ___________________________________________ 6 7 6 3 3 Power up and Screen Alignment ______________________...

Page 36: ...shoot the 2436DW DE interactive terminal consists of a standard CE tool kit a DVM and a standard RS 232 loopback connector WLI 220 0286 All diagnostic checks are performed internally during power up o...

Page 37: ...t 1 of 4 DISCONl ECT SYSTEM CABLE FROM RS 232 CONNECTOR SHEET 2 741 1727 lllr 9 5 1 POWER UP TERMINAL lllr 4 1 1 YES INTERPRET ERROR CODE lllr 6 3 2 SHEET 2 NO CHECK POWER 1 SUPPLY VOLTAGES lllr 9 6 1...

Page 38: ...SWITCH 741 1727 REPAIR REPLACE AS REQUIRED ADJUST MONITOR BRIGHTNESS CONTROL REFER TO TROUBLESHOOTING SECTION OF MONITOR PMM 741 742 1647 REPLACE POWER SUPPLY llltr 7 2 2 CAUT Of If monitor is found t...

Page 39: ...p For System Operation Sheet 3 of 4 SHEET 1 RUN KEYBOARD TEST lllr 6 3 5 REPLACE KEYBOARD 741 1727 SHEET 4 RE IPL TERMINAL CHECK SYSTEM INTERPRET ERROR CODE 1115 6 3 2 Page 6 4 CABLE SYSTEM PROBLEM RE...

Page 40: ...Power Up Fo1r System Operation Sheet 4 of 4 SHEET 1 CHECK BAUD RATE SWITCH POSITIONS FOR POWER UP AND BURN IN MODE 1111 9 4 2 RUN KEYBOARD TEST 1111 6 3 5 YES REPLACE KEYBOARD REPLACE BASE ____ UNIT C...

Page 41: ...power switch is turned on If the diagnostic is successful no errors displayed on the CRT the microcode will display th terminal type PROM revision level baud rate and word length state no of bits and...

Page 42: ...08 Character or Control RAM CPU Board 09 CTC Register Read Write CPU Board 09 CTC Timer Counter CPU Board 09 CTC Interrupt CPU Board 09 CTC Vertical Sweep Sync CPU Board 10 UART Transmitter Not Ready...

Page 43: ...or The test pattern is produced by powering up the Terminal while pressing special function key 11 13 When alignment is complete press special function key 11 15 to return to system code and normal op...

Page 44: ...complished as follows D Set the base unit ac power switch to off O fJ Disconnect the system cable from the RS 232 connector on the rear panel of the base unit lllr 9 5 1 IJ Connect the loopback connec...

Page 45: ...ure the terminal has successfully passed the power up diagnostics lllr 6 3 1 before proceeding with the test II Perform the power up and burn in mode test lllr 6 3 4 II Set the keyboard upper lower ca...

Page 46: ...or operation Also the CE must inform the customer as to the nature of the problem possible consequences or leave terminal in non operational state until repairs can be made 0 Perform the power up diag...

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Page 48: ...ECTION 7 REPAIR Page TOOLS AND TEST EQUIPMENT 7 1 REMOVAL PROCEDURES 7 2 Electronics Base Unit Cover Removal 7 2 Base Unit Power Supply Removal 7 3 Base Unit Printed Circuit Board Removal 7 4 Monitor...

Page 49: ...pment No special tools or test equipment are required to repair the 2436DW interac tive terminal All necessary repair can be accomplished using the Wang CE tool kit WU 726 9401 741 1727 Page 7 1 REPAI...

Page 50: ...1 Unscrew and remove Phillips head screws CAUTION To prevent cover damage do not twist screwdriver in next step I I I I I I I I I D Using a flat blade screwdriver disengage interlocking tabs on one si...

Page 51: ...a Field Replaceable Unit After powering the unit down disconnect the ac cord from the wall outlet and allow one minute for residual voltage to drain through the bleeder resistors D Remove top cover f...

Page 52: ...2 1 8 Remove power supply assembly lllr 7 2 2 a Lift printed circuit board up and clear of base unit D Remove center support spacer from center hole of PCB by squeezing locking tabs together on bottom...

Page 53: ...l Procedures 7 2 4 Monitor Video Printed Circuit Board Removal Refer to section 5 of Maintenance Manual 741 742 1647 for the monitor video printed circuit board removal procedure 741 1727 Page 7 5 COM...

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Page 55: ...TMENTS Page TOOLS AND EQUIPMENT 8 1 Special Tools ______________________________________________________ 8 1 ELECTRICAL ADJUSTMENTS 8 2 Electronics Base Speaker and Keyboard Clicker __________________...

Page 56: ...ecial tools or equipment are required to perform adjustments and alignment on the 2436DW terminals All adjustm nts and alignment can be accomplished using the tools supplied in the Wang CE tool kit 74...

Page 57: ...ally while making the following adjustment f Adjust the speaker potentiometer clockwise to increase or counter clockwise to decrease the audio level of the alarm ______ D While pressing the keyboard k...

Page 58: ...ectrical Adjustments 8 2 2 Video Monitor Printed Circuit Board Refer to the adjustment section of Product Maintenance Manual 741 742 1647 for the video board adjustment procedure 741 1727 Page 8 3 COM...

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Page 60: ...__________________________ 9 4 Unpacking and Inspecting Keyboard ________________________________ 9 5 SWITCH SETIINGS_________________________________________________ 9 6 Electronics Base Line Voltage...

Page 61: ...nd humidity controlled A dedicated regulated noise free ac power outlet should be provided to mini mize electromagnetic interference The terminal draws 0 7 amps 120 vac or 0 4 amps 240 vac during oper...

Page 62: ...9 2 UNPACKING AND SETUP Tools and Test Equipment Standard CE Tool Kit WU 726 9401 Digital Voltmeter 741 1727 Page 9 2 COMPANY CONFIDENTIAL...

Page 63: ...nspecting Electronics Base 0 Unpack base from shipping carton fJ Visually inspect unit and cables for external damage 8 Remove top cover from base 11117 2 1 D Inspect for internal damage loose parts a...

Page 64: ...UNPACK NG AND SETUP Unpacking Procedures 9 3 2 Unpacking and Inspecting Monitor D Unpack monitor from shipping carton fJ Visually inspect unit for external damage 741 1727 Page 9 4 COMPANY CONFIDENTI...

Page 65: ...UNPACKING AND SETUP Unpacking Procedures 9 3 3 Unpacking and Inspecting Keyboard 11 Unpack keyboard from shipping carton 8 Visually inspect unit for external damage 741 1727 Page 9 5 COMPANY CONFIDENT...

Page 66: ...UNPACKING AND SETUP Switch Settings 9 4 1 Electronics Base Line Voltage Select Switch 0 Set base unit ac select switch to correct line voltage setting 115 220 vac 741 1727 Page 9 6 COMPANY CONFIDENTI...

Page 67: ...BAUD RATE switch to the desired settings for parity number of bits and baud rate bits per second as follows Even Parity Odd Parity 7 Data Bits 8 Data Bits Power up and Burn in mode a switch position I...

Page 68: ...screws D Connect keyboard cable to terminal keyboard connector Tighten connector screws 9 Connect video cables between monitor and base match symbols for proper connection CJ If terminal is equipped w...

Page 69: ...t ac power switch to II 1 lllr 4 1 11 Connect negative lead of DVM to chassis ground J4 1 2 J4 3 4 J4 8 D Connect positive lead of DVM to J4 on the CPU board and verify the following voltage limits Te...

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Page 71: ...SECTION 10 CONTENTS SECTION 10 FUNCTIONAL DESCRIPTION Page 10 1 INTRODUCTION 10 1 10 2 BLOCK DIAGRAM DESCRIPTION 10 2 741 1727 COMPANY CONFIDENTIAL...

Page 72: ...2436DW include highlighted displays with special character display attributes such as bright blinking underlined and reverse video All characters may be displayed using one or more chara cter display...

Page 73: ...ower up diag nostics the microprocessor reads and di3plays a message on the CRT which identifies the terminal type its baud rate the PROM revision level parity and the keyboard translation table USA I...

Page 74: ...i CONTROL CONTROL L LOGIC CRT MONITOR 2436 BUS _lDATA1 CONTROLi ADDRESSl PORT ERROR INPUT OUTPUT ALARM PIO K c COUNTING AND TIMING CKTS CTC SHIFT D T REPEAT C LOGIC A K E REPEAT KEYS Rcv tMTR READY R...

Page 75: ...al conditions during the word processing program The printer output register and control circuit interfaces the terminal to a local printer Print data is output to the printer via a one byte buffer re...

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Page 77: ...SECTION 11 CONTENTS SECTION 11 SPECIFICATIONS Page 11 1 E0 UIPMENT ____________________________________________________ 11 1 741 1727 COMPANY CONFIDENTIAL...

Page 78: ...ine SPECIFICATIONS Keyboard Characteristics Character Set 128 upper and lower case letters Alternate Character Set 64 graphic characters with additional special symbols Character Set Attributes High l...

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Page 80: ...CONTENTS SECTION 12 ILLUSTRATED PARTS Page 12 1 MAJOR ASSEMBLIES 12 1 12 1 1 System Components ____________________________________________ 12 1 12 1 2 Electronics Base Assembly 12 2 741 1727 COMPANY...

Page 81: ...____________ Electronics Base Assembly DE 177 3648 ____________ Electronics Base Assembly DW 3 ____ 725 2618 ____________ Keyboard Assembly DE Standard 725 2637 ____________ Keyboard Assembly DW Stan...

Page 82: ...sheilded 6 _____ 650 4080 ____________ Screw 8 32 X 1 4 PH Phil 7 _____ 725 2749 10 _________ Switching Power Supply 8 _____ 449 0676 ____________ Switch Insert 9 _____ 210 8577 A _________ CPU PCB DE...

Page 83: ...12 1 ILLUSTRATED PARTS Major Assemblies 12 1 2 Electronics Base Unit Sheet 2 of 2 END 741 1727 Page 12 3 COMPANY CONFIDENTIAL...

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Page 89: ...WANG LABORATORIES INC ONE INDUSTRIAL AVENUE LOWELL MASSACHUSETTS 01861 TEL 817 469 6000 TWX 710 343 8789 TELEX 94 7421 PRINTED IN U S A COMPANY CONFIDENTIAL...

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