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HP 7470A, Service Manual

The HP 7470A Operator's Manual is available for free download on our website. This comprehensive manual provides detailed instructions and important information on operating the HP 7470A product. Enhance your user experience by downloading the manual from manualshive.com today and get started with your HP 7470A device confidently.

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Summary of Contents for 7470A

Page 1: ...bed in Sec tion IV this manual also applies to plot ten prefixed 2308A 2250A and 2148A For additional important information about serial numbers see PLOTTERS COVERED BY MANUAL in Section I Copyright HEWLETT PACKARD COMPANY 1982 1986 16399W BERNARD0 DRIVE SAN DIEGO CALIFORNIA 92127 I MANUAL PART NO 07470 90000 Printed SEPTEMBER 1984 I i Revision A October 198tj ...

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Page 3: ...uipment Troubleshooting Exchange Printed Circuit Amembly Drive Motonr and Pen Solenoid Troubleshooting Table Test A Test B SeeTable 55 Diagrams PERFORMANCE TESTS 2 1 Introduction 2 3 Basic Operating Test 2 5 Hewlett Packard Graphics Language 2 7 Test Program REPLACEABLE PARTS 3 1 Introduction 3 3 Exchange Assemblies 3 5 Replaceable Parts Liat 3 7 Ordering Information 3 9 CodeLiat of Manufacturers ...

Page 4: ... 7 ParformanceVdcation Plot 2 6 58 Exploded View 3 11 5 9 SchematicDiagram RS 232 C 5 10 Option 001 4 5 5 11 Schematic Diagram HP IB 5 12 Option002 4 9 5 13 Schematic Diagram HP IL 5 14 Option003 4 15 5 15 Schematic Diagnunr Power S u p p k 4 23 RS2324 CCTX V 24 Interface 5 16 Circuih 5 2 HP ILInterface C i t r 54 5 17 Servo Systam Block Diagram 5 45 Top Case Removal 5 6 5 18 Paper Drive Motor and...

Page 5: ...al common as well as providing protection against electrical shock in case of a fault A terminal marked with this symbol must be connected to ground in the manner described in the installation operating manual and before operating the equipment Frame or chassis terminal A connection to the frame chassis of lj7 OR A the equipment which normally includes all exposed metal struc tures Alternatingcune...

Page 6: ...capability permits more than one color to be used in a plot without the necessity of stopping the plotter to change pens manually Pens are automatically capped when in the pen stables A pen that is in the pen carriage will be automatically replaced in its stable when the PAPER LOADIHOLD lever is moved to the LOAD position Either pen may MAXIMUM PLO ITING AREA Y axis 190mm 7 5 in X axis 273 mm 10 7...

Page 7: ...OLD lever extends through the case and the tabs inside the front of the top care align properly above and below the bare plate 11 1 1111 REMOVE THESE SCREWS TO RELEASE TOP CASE 74704 2 1 Figure 1 1 Top Case Removal c Line voltage selection is determined by the power input connections to the transformer primary windings Table 1 2 lists the wire colors and transformer contact connections for each li...

Page 8: ... 184 HP Part Number 8120 1689 250V 10 16A 1 4 plug rating For use in East and West Europe Egypt HPP a r tNumber 8120 1378 135V 1 5 I 6 plug rating For use in Canada Japan Mexico Philippinen Taiwan SaudiArabia ULapprovedin U n i t e d States HP Part Number 81204698 250V 15A 1 4 plqgrating Forusein Canada ULapproved in U n i t e dStatea HP Part Number 8120 2104 250 V 1 0A 1 6 plug rating For usein S...

Page 9: ...e destination of the plotter 1 32 Ifthe original packaging material har been r e c Urn a layer of shock absorbingmaterial at least tained pack the plotter in the same manner as it was 70 to 100 mm 3 to 4 in thick around all side8 received The following general instructionr should be of the plotter to provide f i r m cushioning and used for packing with commercially availablemateriala prevent movem...

Page 10: ...9 CODE LIST OF MANUFACTURERS tested assemblies are available only on a tradein basis therefore the defective assembly must be returned for 3 10 Table 3 5 lists the fivedigit code numbers as credit For this reason aseemblieta required for spare simed to the manufacturers of pans in the Model 7470A parts stock must be ordered by the new part number Plotter These code numbers appear with the parts in...

Page 11: ...I I X D 22UP SO lOX 2SVDC U C Y Y l l O I C X D 47OCC SX JOOVDC 0ICA CYICITOI IXD 47OCC SX 3OOVDC 1IICA CYYITOI CXD OIW 100 OX SOVDC cm CYYITOI IXD ZJUI SO IOX V D C U CYICITOI CXD OIUC 1OO OX SOYDC CCI WYIIOI VXD UOOW aox EHIDC a CYICITOI VXD UOOCC 1OX 200VDC C ILTC I 0 9 9 9 9 CACYITOR xD 7u la WvOC m L v E CYICITOI CXD 47W ZOX SIVDC AL W I C I T O I I X D M I O C C lox 200VDC CnLTE C Y Y I T O ...

Page 12: ... 10 3 CD 15OY TIYSISTOI WM TIC 3 1 1 RCSISTOI l 3 2 l Y CY TC a 90 ICSISTOI CXD 1 1 O W 5 2 2Y ICSI8TOI CXD 1 1 O M S t 2Y RC6ISTOI CXD 1 1 O M 5 2 2Y ICSISTOI txo IN nnm 5 z 2u 1 1 1 0 1 9 0 11 IBSU t 1 0 100 ICSXSTOI 316 1 2 1 2 5 F T C I O O ICSXSTOI 11 It 125M C T6 0 100 ICSISTOI 111 SZ 2SY CC TC AOO tOO 1CSISTOl 1 1 It 125Y C TC O 100 RCSIOTOI 1 211 It la l TC O I00 ICSISTOI4XD 10 O M 2X RCOI...

Page 13: ...v a a 1 i i a at 8 4 1 1 4 Description I yc11U I d I O I l U X 8 R RAM2K IC DCDRn tstw LIN I C W L L W D DIODE ZNI s 1 1 zz on 1s CD 4 u DIODE Zm b SV I 2 PO 1u In 18Ub DIOI C Z r u TZ PO tu i n i a t u OXOW ZW S W 52 DO 3 PDw 4U TPm 046X D t O M Z W 6 1 V I0 0 1 PO 4U OXOM xw b 1 a m 1s r c m u w e n m CUTSTY 4 80 2 c D 7 4 8 3 a 1 I I b 8 o b 1 I I Mfr Code m 4 0 l l ru4 o IWD IWD IWD B casn 114...

Page 14: ...ITOR CXOI UC la UVW L Y CYICITOR tXD 61OOCC I02 LOOVDC COLIC CYICXTW CXD lUF 102 33VDC 1A CYACITO CXD I O C lox SOOVDC P KYE W I C X T O I C X D 01UC I 0 2 SOVDC CER CULCXTW CXD 1U lax OVDC CCR CUICXTOI fXD 8IUC lOO OZ SOVDC C r I D I O D C 4 Y I RCCT 1N4916 400V I 2OOYS DIODE MU 104s DIODE RMlO4I DXODE M0RlO4S DIODE M0I1045 OIOOL WR RECT I N 4002 lQOV 1A DIODE CYI I E C T 1OOV YA DIODE cw RECT IO...

Page 15: ...01 I 0 I C I K M Y I IKyI 1QXB IC IIUI K C TTL WNO OUAO 2 I W IC TTL 3 T O 4 L l N f OfCOll 0100t ZNllS llV 00 36 PO 4W DIODE ZNII 8 11v n00 36 CO 4 01001 ZNR 6 l aDO 38 K 4 DIODE ZNR 8 6V S 0 O a PO 4W TC OOI UAO PAWG CRVtlAL 4 00 YMZ HPP Number Imr oSn 1261 31 S l W l m lS84 0 21 I 0 21 lS84 0921 18 0 21 Mfr Code M M a t 4 114a11 Z Y U O a480 n na o n H S O A4SO ZH4OO 6471 1 2R400 n o 2 4110 A40...

Page 16: ...110 0580 1 118 0655 2110 OW3 2110 W79 0515 1877 0515 1877 0515 1877 0515 1877 nRDFR I1 DkSCPtPTlOM c 0 e 0 1 9 9 9 0 7 9 9 9 s 9 3 2 0 S 3 b 9 3 9 7 0 4 0 3 0 9 7 9 1 9 9 2 4 4 4 4 4 4 2 4 2 4 2 2 3 0 3 7 6 7 7 7 1 1 3 8 4 4 4 4 2 1 1 1 1 3 2 1 a 2 1 1 1 1 I 3 1 1 1 1 4 4 4 1 1 1 1 I I 1 1 1 4 2 Description DATE CODE 2242 H IY re HC II Y Y H h I N PC W 1L R L W I L T CWhCITOI CXD 6 W C 3SVDC CYhCI...

Page 17: ...PY tc 9 e s r m r x a tu o m st au RC8tltOl IXD 1U SX ZU RC818tOl4XO IU OWll S t 2U RCSl8tOl IID 1U O rr S t ZU RC8IStOl 9 a 1 I c TC I RC ISTOl 316 I 1 U C tC la RESIBTOR 1u 1 l a m c t c a a RCSIBTO ln sx acc tc aaa a Rc81RTM 11 l X l J C t C c l RC818TOl 2 blU 1 1 W I TC l O RCStBTOl 1U I X I C tC ll R C S I S m a s 1 M c tc a l c 8 1 n m a a it IZSY I tc a iaa RC818TM 3a 3 1 lmC TC l RC818TUR ...

Page 18: ...Madel7470A Table3 3 Parta Lid Rdain PC HP IL Option003 Continued Section X I I ...

Page 19: ...I 11 C D V U I W I V E S H U T D I l W U u l l U T C L Y w U Y I C YR CIUW I Q L L E I IUCT C I K W RQLLCI I C T I I I I X C C n EXT I I N D I STL Y W I U W I O U C I I I W T U W I N C I Y I L 4 I C W I O L L U W C U I I W L D L I U S CY IUU OLDCI W R I C CWC U ZSOV I D I 25X 2s uL C U I l llU S O V ICC C U U U 2 S O V T O I Z 5 X Z S u L L 1 l W L T I O I U 8 U BLOCK C O M I M O U E U T C O m t C...

Page 20: ...ngle C degree Celriur centigradd F degree Fahrenheit O K dogma Kdvin DEPC depomtd carbon DET detector diam diameter DIA diameter u d in purr lut DIFF AMPL differential ampliflar div divirion DPDT doublepole doublethmw DR drive DSB double rideband DTL diode tranrutor logic DVM digital voltmeter ECL emitter coupled logic EMF elsetromotive f o m EDP elcctmnic data procamring ELECT electmlytic ENCAP m...

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Page 141: ...I TRANSFORYER PRIMARY CONNECTIONS SHOWN FOR 120V LINE SEE SECTION I CRI I I I TRANSFORYER PRIMARV CONNECTIONS SHOWN FOR 120V LINE ISEL SECTION I I ...

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