Sharp MZ-80B Service Manual Download

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Summary of Contents for MZ-80B

Page 1: ...mputer with many new functions Using a Z 80 processor 4MHz Version in the CPU it is capable of high speed data processing It has a keyboard touch that s ideal for a professional operator and is equipped with a 10 numerical keys and 10 function keys The cassette recorder using an electromagnetic mechanism can be stopped started remotely Programs and data can be recorded automatically With the optio...

Page 2: ...nd circuit diagram 0 Disassembled view Packing method OPTIONS and OPTIONAL PERIPHERALS Expansion port MZ BOEU Universal I O card MZ 80102 Expansion graphic RAM MZ 80GMK Floppy disk I O card MZ 80Fl Floppy disk MZ 80F8 Expansion floppy disk MZ 80FBK Replacement parts list Caution in Service Maintain the safety nd protecting ability of the apparatus after service High voltage shall not be rised to e...

Page 3: ...t Approx_ 16kg Data transfer speed 1800 bits sec _ Dimensions Width 45cm Data transfer system SHARP PWM Depth 52cm Manual or Automatic control Height 27cm Sound output 400mW max 440Hz _ CPU Board Section CPU LH0080A Z80A CPU 1 pc Programmable l counter 8253 1 pc PlO LH0081 A Z80A PIO 1 pc Programmable ROM IPL 1 pc 12K bytes Character generator 1 pc 2K bytes peripheral 8255 1 pc_ I 1 interface i RA...

Page 4: ...A 1 2A max Working range 12V 10 Sound output 400mW max 440 Hz Scan size Horizontal 10 15 max Speaker Bern round dynamiC type I Vertical 10 15 max 32I2l Horizontal Control knobs Volume V Hold lock in range I 300 Hz 100Hzlimit Contrast H Hold Vertical Brightness Focus lock in range I 12 Hz 6 Hzlimit Working 440 Hz OdB 10 e to SO C Audio frequency I 10dB 4dB at 100 Hz temperature Characte istic I 12d...

Page 5: ...I I I I I I I I I I I I I I I I L I CRT I Display I f I Graphic RAM CG Rom RAM 11 8KBI I v MZ 80GMKI 32KB 2KB I I I Graphic Universal c RAM 18KB Interface PTR PTP etc RAM IMZ SOI021 I 32KB V RAM Character MODEM 2KS RS 232C Teletvpewriter Boot Rom I etc 2KB IEEE 4SS 1 IEEE 488 Standard W Interface I devices CPU 0 I System Bus 0 00 ZSOA f x N w Printer t Printer Interface IMZ SOP5 FD Interface 1 Flo...

Page 6: ...l Sound Volume Control Power recePtacle Power Switch i Ground J r 9 CRT Display r Cassette Tape Compartment J i i Cassette tape Counter 0ii C 1 Fig 2 Front View of MZ 80B Fig 3 Rear View of MZ 80B Cassette deck Control Keys Cursor Control Keys IPL reset switch o e Switch I O Module Access Window No 1 6 ...

Page 7: ...ns with PlO 8225 8253 to constitute the MZ 80B RESET SWITCH IPL RESET SWITCH FRAME GROUND 11 AC I n POWER SWITCH 1 1 POWER UNIT POWER TC ITv ONIPL 5V RESET GROUND C R E L S 0 E T A Z80A CPU 4 CRYSTAL 16 4MHz OSCILLA MHZ l TOR 31 25kHz Jl L E D IPL RESET Initial Program Loader RESET 5 Main Memol RAM 32k bytes IPL ROM 2k bytes RAM 32k bytes ADDRESS SELECTOR r I I1 m ADDRESS BUS 1 11 1 u 11 IL JI J T...

Page 8: ... L REGISTER E VIDEO GENE C V RAM l T RATOR GRAPHIC I I 0 8k bytes rt 11 T I I 11 11 11 J1 11 11 11 11 V RAM 11 11 11 P GRAPHIC II 11 11 E 8k bytes ADDRESS BUS R OPTION I i I II1I 11 P H E 0 IH III v R P r A T L I NT BU I 0 v N 0 P SHAKE 0 8255 8253 R CO Cl C2 T 11 CASSETTE TAPE CASSETTE TAPE DECK I O DECK 80B System Diagram I No I I No 6 ...

Page 9: ...perational difficulties follow the chart below to find which unit is causing the problem Start Power on YES YES Is the CPU board normal YES YES End NO NO NO N9 7 Repair the power supply circuit Repi3ir the monitor TV Repair the CPU board Repair the cassette recorder ...

Page 10: ... parts Check IC23 8255 and its peripheral P lrts Check IC19 8253 and its peripheral parts Check memory circuit and its peripheral parts Checki g rnetl1ods f h circuit I _ _ l C By tbuChinglC package by fingers c Ifthey seem too hot by heat gene atiori 2 I j defective le Idad is hea y or mporients are ouc each other ROM and V RAM are ex mpted f m this checking e If a circuitry state changes to an t...

Page 11: ...6 Yes Check IC36 No Check IC42 and IC43 and around them In particular check if the input of 8MHz 16MHz and other clocks are correct Wave form is shown on page 15 Is pin 16 of IC42 at a high level No Check IC23 Yes Proceed to the following Is a video signal present at pin 8 of IC46 Yes Check IC31 IC33 and IC36 No Check IC42 and IC43 and around them In particular check if the input of 8MHz and 16MHz...

Page 12: ...t key entry No Check IC 37 38 39 42 and 43 Check the common line of IC22 IC41 and IC44 and around the IC22 Check A Ao and D Do of 1C45 and IC42 Key strobe Key board cancelling signal Decoder Block Diagram around Keyborad Point Is key strobe present Yes Check keyboard IC24 and around it No Check IC25 IC27 IC28 IC29 and IC36 10 If they are normal check IC24 and around it ...

Page 13: ... bREW I o OPEN I L _____ J Block Diagram around the Cassette Condition T Ch Ck Point I Load is not possible Is there a signal from pin 6 of le 26 YES Check IC23 NO Check IC26 Save is not possible Is there a signal from pin 10 of IC23 YES Check IC26 NO Check IC23 Motor does not turn Check IC23 MOtor does nOt stop Check IC23 11 For cassette ...

Page 14: ...CS Peripheral interface 182551 PC2 Counter 0 1 eset signal Al AD RESET Block Diagram around Clock Audio Block Check Point Is there a 31 25kHz signal present at pin 9 of IC19 Yes Check IC19 8253 and around it No Check IC42 and around it Is an output signal present at pin 4 of IC31 Audio output Yes Check amplifier section in the display board No Check IC23 IC31 12 ...

Page 15: ... block Memory Reset Circuit Memory control circuit 07 DO Check Point CPU control bus A15 1 Al2 Does pin 26 of IC3 go from High to Low when the BOOT reset SW is pushed No Check IC33 Yes Proceed the following Is pin 15 of IC2 High No Check IC34 Yes Check address line AO A15 ICB IC10 Data line DO 07 ICll Control line lC7 IC2 ICS IC14 IC1B Is pin 15 of IC2 at Low Level Yes Check IC34 No Check IC2 Chec...

Page 16: ..._ al Write in data 00 From address 0000 to 7FFF b Write in data FF From address 0000 to 7FFF c Write in data 00 From address 7FFF to 0000 d Write in data FF From address 7FFF to 0000 e Write in data FO and OF entered alternately From address 0000 to 7FFF and vice verSa f Write in data 00 From address 8000 to FFFF g Write in data FF From address 8000 to FFFF hi Write in data 00 From address FFFF to...

Page 17: ... 20 1 p 28 1 D2 P 3 P 11 P 19 1 P 271 D1 P 21 P 101 P 18 1 P 261 DO 1 I P 91 P 171 P 25 1 Waveforms of CPU Board Pin 23 of IC42 Pin 22 of IC43 Pin 20 of IC42 Pin 20 of IC43 lSMHz 8MHz 4MHz Pin 19 of IC42 Pin 21 of IC42 Pin 21 of IC43 Pin 19 of IC43 2MHz lMHz lMHz Pin 10 o IC42 F in 12 of IC36 Pin 7 of IC42 J U I 16 64ms 64 64 Pin 9 of IC19 3L251 Hz 15 ...

Page 18: ...r c rcu t Transformer L Rectifier circuit 1 I I f Voltage stabilizer circuit Rectifier circuit Voltage stabiliz er circuit Rectifier circuit 1 Block Diagram of Power Supply Circuit _ _ _____ ______ 0____ __ ___________ 12V r 12V E 5 CO 5V 12V 5V E ...

Page 19: ...201 C203 aod R201 No 12V NO NO Chlt k t101 F201 D201 C201 and C202 Check primary circuit which includes T101 Is voltage at the NO other output _____ terminals normal Is approx 24V When A309 is open does a O 2Vpp appear at pin 12of1C301 Check 0301 Q302 and smoothing circuit NO NO Check IC3Ql and circuit of IC301 17 Check F301 nOl D301 C309 C301 C302 and C304 Check primary circuit which includes Tl0...

Page 20: ...appear ____ at pin 12 of IC401 Check Q401 0402 and smoothing circuit Problem 5 5V is abnormally high Check IC201 Problem 6 12V is abnormally high Check 1C401 and circuit of IC401 Check 0301 0302 and IC 301 Problem 7 5V is abnormally high Check 0401 0402 and IC401 Check F401 T101 D401 C412 C401 C404 C407 Check primary circuit which includes T101 ...

Page 21: ...f Power Supply Circuit 119PS i 14Vpp I Pin 1 of IC301 0301 collector Pin 7 of IC401 Q401 collector These are basic waveforms when the load current of 5V 2 SA 12V 1 25A and 5V 10mA flow from the output terminals 19 ...

Page 22: ... Sync amp Vert DSC 02003 amp output r amp IC2001 To Video amp t t t To sync separator To vert V HOLO V UN V SIZE circu lt To audio V circuit Horiz sync signal To horizontal circuit To FBT circuit To CRT heater AFC 02003 t 02004 t Horiz Horiz_ Horiz DSC I drive output 02004 Q2005 02006 H HOLO Block Diagram of Monitor TV Section IIU Speaker V DY J4 IX CRT H I H Do r 0 F B T E2728B31 9 voltage ...

Page 23: ...s too narrow NO Chcek V HOLD VR _i_ _ _ w_i _ _lt_ _f_ m_ _4_ I I I I 1L _ _ _g_r_ _a_n_d of IC2001 at pin I YES normal Is output L YESl waveform of IC2001 normal Problem 4 No sound comes out NO Agalfl set correct program Is there YES j audio ignaP NrO __ Check CPU L oilrd _ __ JI YES Is input signal of IC2002 at pin 1 normal NO YES 21 iD2009 D2010 Q2007 Cheek middle YES high voltage rectification...

Page 24: ...lls 2m Vertical oscillator Circuit Vertical output waveform Vertical drive collector waveform 7 8 U r J lt f i 6VppV I lOIT _ L J V T oy 5m 1 5V 5m Voltage at PlrlCg of RH IXOO15 Vertical deflection coil VOltage waveform Vertical linearity circuit waveform iiJ rG 0 l V T ltlV avppi L L lJ I J 5ms 5ms 5m HOflzonti ll sync sl nal waveform AFC waveform rBT waveform jtl Cf C if n ttL l ll t L__ _ __ 1...

Page 25: ...ulse f _____ 20 _s______ _______ Horizontal drive collector waveform 15Vpp 1 20 lS AFC pulse 20 15 Audio input signal HorizOntal output base waveform 20 T 160V I T 8V 20 ls 20 ls Middle voltage FBT pulse Video power supply pulse 20 ls Audio output waveform 23 40V ov I 20 15 J The figures encircled by 0 in the above refer to those of Wiring Diagram Check Points of Waveforms ...

Page 26: ...J NS I2V Dri e mcuil 030 5 03016 03017 0301S S 12V Drive cire 03000 03007 RY2 RY3 NS 12V Amp cilctlil 212 C3101 RM Sroke solenoid Raol mOtor Panel soleno d coM OI Circuit IC3D06 IC3007 Ortv ci CUit 03019 03020 03021 03022 PMel olono d SlOP button S I2V D i ei CuI1 0301 I 03013 CM G DOOO __ r o O 1114 IC3002 oe rotatIon G D 1 lJ41 IC300 I STOP i__ __j_ I o te lLon U S 12V EJECT but om V NS 12V Dr v...

Page 27: ...etween J3005 3 YES Does the av an d 5V 4 and then 4V level change when Is level of J3003 111 the COunter linkage magnet is turned QV by hand YES si Check level of YE IC3011 Problem 2 Tape turns but program cannot be recorded N Check CPU board Does a signal N Check CPU come from I board J3003 1 y E Is level of f Check relay RY1 J3003 5 OV Does a signal Y E appear at the f recording head Y E Check r...

Page 28: ... azimuth adjusting screw Clean the heads capstan and pinch roller often to remove dust and tape residue Foreign material on them impairs the sound quality of both recording and playback Open the cassette holder remove the tape push the play button and clean them with a soft cloth moistened in alcohol Erase protection To protect a cassette tape from being accidentally erased it was designed with tw...

Page 29: ...aveform ct fruRillUf Operational amp input waveform Operational amp input waveform Cl L 6mv pp 1 BV T ov Operational amp output waveform Output waveform CID tW T 4Vpp Record amp waveform Head input waveform I I CID T I 4 8Vpp 1 I ___ 0 27 l f II The figures encircled byOcorrespond to those of Wiring Diagram Check Points of Waveforms I I I ...

Page 30: ...1 CPU PWB 2 3 4 8 29 ...

Page 31: ...G H J K L Notes The circuit diagram and printed wiring board subject to change without prior notice C37 r C 9 C39 R8 R c36 tmr w 30 Prespective View o Parts fitted face D Opposite Side ...

Page 32: ...BLNK 2 BLNK AI2 J o 0 0 22 ROMeS WAif It IC 17 2 1 WAii 02 12 D2 Itn 21 Lie sw rxwAi r r LSOB Dl I 0 1 11 20 RAS1 i RFS 6 00 1 1 0 1 19 RASi MRE R5RQ I RC Mi 2 f 11111 IC 7 IC 6 LS244 LS244 RESET RF5H 21 RFSH AI I AI I MREQ 19 MREQ AI I I AI I loRe 20 IORO All 1 AI3 RESET I Rn RC AI2 rt A 5 WR WR All All IC _ 27 _ 40 504 M I MI Alo Alo ALT I1 ffiIT t A9 A J BU50 A I A lC5 IC5 S04 504 IC I LSOO RAM...

Page 33: ...2 3 4 5 6 7 8 A B CPU Board Circuits 2 to il I t L f t I 0 v 0 l 4 c o 0 D 0_ I l f q H 32 E F o l Lt rIll I G H I CD o CD N ...

Page 34: ... j 2 3 4 5 6 7 8 A B c o E F CPU Board Circuits 3 o Q i 1 r 00 u Q0 c o I 1L 0 1 i jC J1 GI I u L T tttittltlttt E 3 L f J _ 0 0 0 0 0 0 0 0 0 l I 1 nrnrn 11 l o l G H CD 0 CD N ...

Page 35: ...A B c D E F CPU Board 4 and Expansion RAM m N Block Circuits 2 3 t t t t 4 t t t t f f f f t f t t 8 t i 1 i t r t t t t t t t 5 6 7 8 34 G o 0 t CD o co H ...

Page 36: ...z z on 0 10 0 OD N El i z z t 0 0 on 0 on 0 N RAM Ill IV Block PWB Section RI R2 R3 0 N 0 N I I s I z w 0 W Q w OD CD 0 N N N w 0 w 0 Z Q 0 w w 0 N N 35 I is I I t s 0 m 0 i O a r u w z z o if 100 f I o 0 z n I 10 0 I I N on c Q c J f lO 0 a 0 Z oO I 05 0 u_ r t 1 Parts fitted face o Opposite Side ...

Page 37: ...A B c D t 11 Cassette Tape Recorder PWB Section 2 Perspective View IIIParts fitted face 11 Opposite Side 3 4 5 t 6 7 8 ...

Page 38: ...110 IS C ID U J300 5 WRITE 37 F G H CASSETTE CONTROL 111 117 NS t2v J3006 1 NS t 12V J3006 2 GNO J5006 3 5V J3006 4 S 12V CN3003 1 OL CN3003 Z L I t J300 5 9 r t t J30 05 8 C3020 lOll NS 12V 03015 R II 2 S 7 2P _____ _ J3OO5 3 1 03020 258761Q Q3019 0100 ISI OK J3005 4 J 2 _JL J 2 S 7 2P ______ J3005 5 1 PNL L J3005 6 _ l ______ J3005 ll IC3OO3 LS08 CM J3OO 2 J _ _ _ _ _ 2 1 2V I i LEO I CN3OOI 21 ...

Page 39: ...EW l EO 68 J3002 R3052 AEV J3002 2 S 12V 12V 68 J3002 3 A3053 FF FF lEO F0335PA LEDPW S Late Circuit Diagram The FF and REW display LED circuit was changed with later products When the cassette PWB is replaced check the LED PWB circuit Adjust the pattern of the LED PWB it the ircuit does not conform Graphic RAM I PWB Section Perspective View o Parts fitted face D Opposite Side ...

Page 40: ...G 2 G A10 A y A A y Alzo 1 A Y B 3 A O fL AIO A 0 2 A o 1 I A o A a l A 0 Tt F 5 G 1 23 1 l 1 A AoAoM AJA2A ts le 4 2016 21 WE O 20 L o GI I GO GNO le 3 2016 rel3 GHQ I le20 LS32 le20 le 16 lel6 LS32 LS04 LS04 le 2016 A6 lC20 LS32 RC I I o I le I 2KRAM 2016 010 c 40 lOZ DI Do Do D 0 0 0 0 D 0 GND H8U BlK rc 8 5V IK J OK K 0 I ICI9 LS08 le 13 I LS245 2 DIR G A 8 Gl LSOO 10 CHi RS 2201 Ff e rel7 Go ...

Page 41: ...301 R30 Q301 E 8 I I E C C303 _ 1 FySE 0 0 0 0 ll Q4010 402 T I BA c R407 C E _ 0 0 _ L 0 0 U t u 0 C307 7 0 0 C304 R30 ij I G 7 iQ302 2 J401 0 N C 30 C4d t T L401 Ol g 0 I Q 1 f t 0 H ttp0 il rn _11_ 12V 0 V C201 0 OC308 VR401 C410 1 E 01 IX T IC201 JV JV 12V 0 0T Secondary H 1 I I ...

Page 42: ...C301 SG 3524N 1 r VRI301 IK t 1R307 3 3K I I I I I I I F402 6 I __________________________________ J L ____ J I 5A 0401 2SA 770 6 T3 15A t 2j c40r c404 4700 2 Vx4 R401 4 7K C407 33p 35V I 15 13 12 IC401 SG 3524N r 10 9 r I I I I I I t r I J 5 V R408 4 7K VR410 K R409 3 9K I I I I I I I Lr I I I I I I I I I I I I I Parts marked with 6 are important for maintaining the safety of the set Be sure to r...

Page 43: ... f C2029 R2001 ANv U Q2006 f Z6 R2036J C 27 3 R2ot6 c R20315 C2021 T T L f l T2001 eo f C2004 f r f l 2 4 C2032 C2021 T J 11 02001 U C2028 R2034 J f 1 1 Vl yl C2015 15 ii iIV h C20015 I ro R20i2 j I I I r T R20155 R2020 R2033R2039 02002 R2013 _ ANv J 02003 M I J NIr t R2053 J JWv R2016 U JWv TC2011 R2022 C 2 0 1 3 R 2 0 1 5 4 J w R2054 t w R2023 HOCD C2052 J I I h 1 lrl I J LIE C201 R205C r R2008 ...

Page 44: ... R2010 4 7K R2034 33 R2060 C20 56 27K IO u IOV Q2001 2S C1213 Q2003 2SA673 R2013 or 2SA495 Y 12V 3 3 1 2W IK or 2SA495Y R2042 33 1 2W o IS R I f R2C 33C C2020 __________________________________________________ R2043 33 1 2 I 220 j J 16V Parts marked with 6 are important for maintaining the safety of the set Be 5 set 43 ...

Page 45: ...F G H J 1 R2051 12 I I VSIIP008IJP IGYA 32 hm C2034 C2035 033 200V 015 200V C2036 220W to replace these Parts with specified ones for maintaining the safety and performance of the 44 ...

Page 46: ... j t n I 2 3 4 5 A B o cirOl SAS EMBLEO VI ...

Page 47: ...o 46 42 ...

Page 48: ... 47 Iv I om ...

Page 49: ...el Metal AH 17 94A01780BCTAM Thrust Pressure Spring AA 18 94R01880BCTAM Thrust Pressure AA 19 94A019BOBCTRM F L DamPf f AC 20 94A02080BCTRM F L Hold Plate AD 21 94A02180BCTAM Panel Plunger Call Ass y AW 22 94R022BOBCTAM Plunger AG 23 94A02380BCTAM Plunger Shaft III AB 24 94A02480BCTRM Plunger Lever Ass y AC 25 94A02580BCTAM Brake Plunger Coil Ass y AW 1 26 94A026808CTRM RC Lever AC 27 94A02780BCTA...

Page 50: ...G H JBTN OO39PA32 AG I I 0 JBTN OO39PA10 AG I I El JBTN OO39PA33 AG t I I 0 I I El JBTN 0039PA11 AG 0 J I JBTN OO39PA34 AG In I 0 I J8TN 0039PA12 00 JBTN OO39PA35 AG K AG I I BB I JBTN OO39PA13 AG L I JBTN OO39PA36 AG I I J8TN 0039PA 14 AG M I I JBTN OO39PA37 AG I I I I JBTN 0039PA15 AG I Q JBTN OO39PA38 AG N I I I CLR JBTN 0039PA16 AG 0 I JBTN OO39PA39 AG HOME I I INST I JBTN OO39PA17 AG P I Eiil...

Page 51: ...AG F4 JBTNOO49PASD AG I c 5 JBTN 0039PA56 AG 0 F5 JBTN 0049PASE AG I u C s 6 JBTN 0039PA57 AG LL F6 JBTN 0049PASF I AG I 15 f j I i u 7 JBTN 0039PA58 AG F7 JBTN 0049PASG AG I en I I s I I 2 8 JBTN 0039PA59 AG F8 JBTN 0049PASH AG I _ I 9 I JBTN 0039PA60 I AG F9 I JBTN 0049PASI AG I I 0 JBTN 0039PA61 AG FlO JBTN 0049PASJ AG I 00 I I 00 JBTN 0039PA62 AG AG I I e I I JBTN 0039PA63 AG JBTN 0049PASL AG ...

Page 52: ...BN0016PAZZ Monitor Reference Manual TiNSE0024PAZZ TLABH0002PAZZ Q Q Sack AC Cord o QACCB0001PAZZ L 7 Bag d J UBAGS0002PAZZ __ l Sack SSAKH0022PAZZ Sleeve SPAKS0064PAZZ Packing Add SPAKA0042PAZZ Packing Add __ J II SPAKS0065 PA_Z_Z_ ____ j L__ X SSAKH0045PAZZ Mat MZ 80B 51 SPAKHOOOtPAZZ 7 Packing Add SPAKA0041 PAZZ Packing Case SPAKCOt23PAZZ ...

Page 53: ...j IC2 LS08 RA2 IKfi x IEll IE02 CN2 Ul SV IEI3 lEO CN 3 INT3 IC2 LS08 ii ql T _ _ ________ _______ SV IEI4 lEa CN4 INT4 RAI I Kn 4 IEI5 IEO CN S lNT W ICI LS08 IEII lEa CN6 IHT6 f I CNI CN6 A 1 B sv I SV 02 2 03 01 3 04 DO 4 OS GNO S 06 AIS 6 07 AI4 7 BUS AI3 8 MI AI2 9 WR All 10 RO AIO 11 10REO A9 12 MREO A8 13 GNO A7 14 HALT A6 IS IEI AS 16 IEO A4 17 RESET A3 18 EX RESET A2 19 EX INT AI 20 EX WA...

Page 54: ...A B c PWB and Disassembled Views 1 2 3 4 5 6 7 d 8 D E 53 F G Perspective View Parts fitted face I Opposite side H I II t l ...

Page 55: ...Z Reference Card TiNSE0025PAZZ Packing Add SPAKS0070PAZZ Note Fold CD in the direction of the arrow before put ting the set in the pack ing case Fold G and in the direction of the arrows after putting the set in the packing case Packing Case SPAKCOl14PAZZ ...

Page 56: ...12 0 5 IC2 WR 2 C O IC3 9 IC2 RC 9 3 LS04 LS42 6jEr 5 Jj C2 AO A 2 wo Q I ICZ LSl25A EY r 01 O Cl 6 J E 11 05 5j ICI 3 DO EY IZ ICI 2 IK c ICI 3 t V L t V J r 03 02 IC6 01 y 3 DO 3 3K X 7 P IC4 RC I RESET RST I S04 6 lIll n n nvo I I II I I 11 017 0 6 015 0 4 01 012 011 010 I I I I I I I 0 I 11 I I t 111111 I F I I11 r t 11 1 1 I11 1 11 t pIIIIIJ RDl R06 RD ROO RO RO Ra RO Wi RST 01 06 O O 03 02 0...

Page 57: ...I I u PWB Section 1 2 3 4 t 5 6 7 Perspective View 8 Parts fitted face I Opposite Side 56 ...

Page 58: ... Packing Method Protected Seat SSAKH0043PAZZ PWB Sleeve SPAKS0028PAZZ MZ 8010 2 solder face Packing Case SPAKCOl16PAZZ 57 Instruction Manual TiNSE0020PAZZ English Seal x 2 TSELF0001PAZZ ...

Page 59: ... IC1S 13 220PF J COS 4 G G E le sr57 r ou B 7 G G F leo L5157 GIZ B ICI7 L542 F G AII A vr j V B 1 AlOo oiL A oo r A 0 1 S G 0 ft 0 l fJIOMAeA7Aa A A lII ZAIAD 11 al WE ICI9 20lS 11 In J f ICI6 2016 11 le 12 2016 h I le 8 2KRAM 2016 Or 0 OS 040lDII0 00 I 1111 o le7 H OH 0 ICI3 F L oo 0 e eLR t N O TO Gr h e R PWB CN 10f I 0 csro 3 OD G0UT2 ONO 7 veuc ONO 10 Melt G C C G Go G 0 6NO 1 C tr ICII h 1 ...

Page 60: ...A B PWB Section t 2 3 4 t 5 t 6 7 8 c o E F G Perspective View Parts fitted face Opposite Side H ...

Page 61: ... Packing Method Protected Seat SSAKH0043PAZZ PWB Sleeve SPAKS0028PAZZ MZ 80GMK solder face Packing Case SPAKC0117PAZZ 60 Seal x 2 TSELF0001 PAZZ ...

Page 62: ...Floppy Disk 1 0 Card M Z 8 0F I A 8 c o E F G H Circuit Diagram 2 t 3 4 I fr g 5 li 6 ...

Page 63: ...A B c D E PWB Section 2 3 4 5 6 7 8 62 F G Perspective View _ Parts fitted face D Opposite Side H e i d I I 1 I I I j I I I I I I I I ...

Page 64: ...a rise from MR low to high Computer Interface 2 IWRITE ENABLE WE I J the strobe input terminal only for data write in to the inner register With CS and WE 0 write in is possible 3 CHIP SELECT CS I It is the chip selection signal With CS 0 the chip is selected and sending and receiving of data with the computer is possible 4 READ ENABLE RE I It is the strobe input terminal for read out of data in t...

Page 65: ...This is a signal for making a window in the data It is developed in response to external data flow and is input on the FDC ide Related to RAW READ rising and falling is important but level high or low is not important This is raw data directly input from the disk drive It is used when receiving a signal and data is indicated by a negative pulse It is the output terminal for controlling whether the...

Page 66: ...5 Fig 1 VR2 Adju tment Apply a negative pulse with a period of 5 1 to TP3 READ DATA At this time adjust VR2 So that the width of the negative pulse appearing at TP4 is IllS 0 2 0 4 j lS TP3 Ml t t 0 4IJ s TP4 j 1 r _t Fig 2 VR3 Adjustment Apply a negative pulse with a period of 4 1s to TP3 At this time adjust VR3 so that the voltage of TP8 is 2 65V After adjusting change the period of the negative...

Page 67: ... Packing Method Protected Soot SSAKH0043PAZZ PWB Sleeve SPAKS002BPAZZ MZ 80FI solder face Packing Case SPAKC0117PAZZ 66 Soal x 2 TSELF0001 PAZZ j 1 i j I J I ...

Page 68: ...FDK for the system of MZ 80K in signal connecter on the rear side and power supply circuit Howeyer the disk drive are the same as those of the MZ 80FD MZ 80FDK in circuit design Use the service manual of the MZ 80FD MZ 80FDK for service A I B I c I Power Supply Circuit PWB Section o 0 o I FOJ67PA 67 E I 102 c l 11 C 101 F I G I Primary H ...

Page 69: ...rts marked with 6 are important for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set Jl C201_C206 2500 31 V C307 IO 35V R407 4 7K w Q301 A892 L301 0 ZOOO7 i 12V en c I C306 C IO J 35V 2 n c LED R309 IK le c IL402 ZOOO7 telV 1 1 C408 1Ol 35V n C I ...

Page 70: ... Disassembled Views 9 forMZ 80FB for MZ 80FBK forMZ BOFB for MZ BOFBK ...

Page 71: ...C2l RH iXOO4QPAZZ SN7t1121N AG R37 ICll R38 IC22 RH iX0124PAZZ SN74LS245N AR R4 I Je12 J R9 RH iXQQ74PAZ7 SN74LS04N AE R14 VRO SC2EF331 l 330 ohm 1 4W AA 1C28 RI8 IC32 R8 VRD SC2EF222J 2 2K ohm 1 4W AA le4D Rll 1 IC13 R40 VRO SC2EF472J 4 7K ohm 1 4W AA RH iXOO78PAZZ SN74LS32N AF IC20 R15 VRD SC2I Fl01J 100 ohm 1 4W 1 1 IC14 l Rll I IC15 rH 1 IX0148PAZL SN74S157N AQ R21 Je17 I R23 VRD SC2EF221J 220...

Page 72: ... Ceramic Q Q01MFO 50V Film Crystal 16MHz AE AB AA AB AB AA AA AA AM eN6 CN CNS CN11 CN12 CN13 CN14 eN15 OPLGZ0048PAZZ OPLGN0303CEZZ OPLGN0403CEZZ OPLGZ0066PAZZ OPLGZ005 PAZZ OPLGZ0068PAZ OPLGZ0069PAZZ OPLGZ0078PAZZ MONITOR TV 12 Pin Terminal for Cassette 3 Pin Terminal 4 Pin Terminal for Pow r supply 20 Pj Terminal for Keyboard 4 Pin Termin ll for LED 1D Pin Terminal for Graphic 6 Pin Terminal for...

Page 73: ...2014 C2015 C2016 C2017 C2018 C2019 C2020 C2036 C2046 C2021 C2022 C2023 C2030 C2024 C2025 C2026 C2027 C2028 PART NO VCEAAU 1CW478M VCEAAU1CW108M VCDYKU1HM333K VCEAAU1EW475A VCEAAU1AW227Y VCEAAUlCW226Y VCSACU1VE105K VCQY KU 1HM332K RC EZ0029TAZZ VCEABA 1CW226M VCEAAU1CW228M RC EZ0027TAZZ VCQYKU1HM153K VCEAAU lCW227Y VCDYKUIHM683K VCQYKU1HM223K VCQY KU 1HM 103K VCEAAU1CW107Y VCQYKU1HM473K VCEAAU 1EW3...

Page 74: ...AG AH AC AH AG AB AC AA AA AA R3020 R3024 R3025 R3i29 R3032 VRD RU2EE333J VRD RU2EE562J VRO RU2EE150J VRD SC2EF102J R3033 VRO SC2EF680J R3034 R3045 VRD RU2EE472J R3035 R3044 VRD RU2EE 12 J R3036 R3043 VRD RU2EE1L1J R3038 R3041 VRD RU2EE222J R3039 R3042 VR RU2E E822J R3101 VRO SC2EF471J R3102 VRO SC2EF822J R3103 VRD SC2EF473J R3Q16 VRD SC2EF271 J R30117 VRD RU2EE2nJ R3052 VRD SC2EF681J R3053 R3104 ...

Page 75: ...1 32 35 36 37 38 30 40 41 42 43 44 45 46 47 48 49 50 51 AE 52 53 AH 54 AG ob AG AF PART NO DANG QOI6PAZZ PGUMS1007PAZZ JBTN 0037PASA JBTN 0050PA SA MSPRC0014PAZZ MARMMOOOl PAZZ LANGK0311PAZZ DSOCN0112PAZZ GCOVZ0007PAZZ RH PX0048PAZZ DSOCN0102PAZZ HBDGB3002GESA HBDGB0003PAZZ LHLDF0006PAZZ LHLDW9062CEZZ LHLDW0007PAZZ MSPRTOOII PAZZ KME KA0002PAZZ DFTAC0003PASA LANGK0321PAZZ MSPRBQ036PAFJ PDMPOOOO1 P...

Page 76: ...b 251iV Aj l 6C1Q 2 c _ _ _ _ 1 _ JI i i 9t C201 VCEAAU1CM228M 2 200MFD 16V Aluminum AE C202 VCTYPU 1ED104Z 0 1 MFD 25V Ceramic AB C305 C408 VCKYPU1NB104Z O lMFO 12V CeriJmic AB C203 VCEAAU1AM107M 100MFO 10V Aluminum AC C301 I C302 C3rt3 C40tJ C304 C407 C306 C409 C307 C308 C406 C411 C309 C412 C401 VCEAAU 1VM338M VCQYKU1HM102K VCEAAU lVM336M VCDYKU1HM183K VCEAAU 1CM338M VCQYKUIHM103K RC DZ0003PAZZ ...

Page 77: ...XQ129PAZZ RH iX0181 PAZ RH iX0074PAZZ RH iXQ127PAZ7 RH jXOO78PAZZ RH iX0075PAZZ RH iX0070PAZZ RESISTORS RI VRO SC2EF102J R4 R5 VRD SC2EF470J R6 VRD SC2EF101J CAPACITORS Cl i CB C8 ClO I C14 C7 C9 C15 VCTYPU180104Z VCCSPR1 H6471 J VCEAAU1 CW107Y VCCSPRl H6221J MISCELLANEOUS CNl CN2 DSOCZ0005PAZZ QPLGZ0085PAZZ DESCRIPTION TMM2016 12K S RAM SN74LS157N SN74LS42AN SN74LS93N SN74LS245N SN74LS165N SN74LS...

Page 78: ...RTS LIST DESCRIPTION Instruction Manual English Instruction Manual English I nstruction Manual English Label for MantJal English BB BA AB For U K a label TLABZ0088PAZZ snail be stuck on the inside front cover as shown below Inside front cover of TINSE0022PAZZ I I I TLABZOOB8PAZZ ...

Page 79: ... C I QSOCZOO21PAZZ 44 Pin Socket AW CN6 MZ 80I02 PARTS LIST MODEL MZ 80I02 REF PART NO DESCRIPTION CODE REF PART NO DESC RIPTI ON CODE NO NO INTEGRATED CIRCUIT RESISTORS ICl RI VRO SC2EF 102J 1K ohm 1 4W AA IC2 RH iXb190PAZZ SN74LS266N I F RAI RR KZQ037PAZZ Resistor Array 3 3K ohm x 7 AG IC3 RH iX0104PAZZ SN74LS42N AH IC4 CAPACITORS IC5 RH iX0074PAZZ SN74LS04N Ac Cl VCEAAU CW107Y 100MFD leV Alumin...

Page 80: ...4LS93N AK CAPACITORS RH iX0129PAZZ SN74LS165N AD Cl VCEAAU1CW107Y 100MFD 16V Aluminum i RH iX0265PAZZ TMM2016P 12K S RAMI BP C 2 C14 VCTYPU 1BD104Z O lMFD 12V Ceramic RH iX0127PAZZ SN74LS107N AG CJ6 RH iXOO70PAZZ SN71LSOON AE C17 RH iXOOJ4PAZZ SN74 LS04N AE C13 VCCSPR1H6471J 47QPF 50V Ceramic C15 VCCSPR1 H622 J 220PF SOV Ceramic RH iXOO78PAZL SN74LS32N AF Rfl iX0104PAZZ SN74LS42N AH MISCELLANEOUS ...

Page 81: ...e12 1 IC21 HH iXD103PAZZ SN7438N AF Cl le22 ClO VCOSMU1HM102J 1 OOOPF 50V Film A C IC13 AH iX0262PAZZ MB8866 FDC sW C2 VCQSMU1HM151J 150PF 50V Film AC IC16 RH X0217PAZZ SN74145N AM C3 VCMZSU 1HC220G 22PF 50V AC IC18 RH X0125PAZZ SN74LS93N AK C4 VCOYKU 1HM472K O Q047MFD 50V Film AA IC23 RH iX0102PA 7 SN74LS14N AM C5 VCOSMU1HM301J mOPF 50V Film AC IC24 RH iXQ261PAZZ SN74LS51N AE C6 VCOY KU 1HM223K O...

Page 82: ... DESCRIPTION NO C305 C406 VCQYKU1HM102K O_OOlMFO 5OV Film C3G6 C307 C407 VCSACUl VE106M lOMFO 35V Tantalum S C409 _ C308 VCOYKUlIlM682K O OO68MFD 5OV Film C402 C405 VCQYKU1HM332K O OO33MFD 5OV Film C404 VCEAAUl AM338M 3 300MFD 10V Aluminum COl LS AND TRANSFORMER AN AL L3Gl L402 L401 AT ANZQO 7PAZZ RTRNZOOO9PAZZ AG MISCELLANEOUS AA OSOCN0065PAZZ AD OP LGZOO50PAZZ AA 507 PRDAROo21PAZZ PROAROO22PAZZ ...

Page 83: ...ber Label DRIVE 3 AB 536 LHLDW9003CEZZ Cord Fixer HW 146 AA for MZ SOFBK 537 LBNDCOOO3PAZZ Wire Band AB Drive Number Label DRIVE 4 AB 1 i538jjlln P C U S GiOiiOilOii5iPAiliZIiZ llijii5IiXI1iiOiiOixiiit1ii Ii O III A A Ifor MZ 80FBK I Drive Fixing Angle AE 539 LX BZOO67PAFN Screw for Disk Drive AG Front Frame Fixing Angle AM 540 LX BZOO68PAFN Screw for Disk Drive Fixing AH Screw for Flat Cabbie Ass...

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