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Fce eOMPLIANCE STATEMENT This equlpment uses and generates radio trequency energy and It not installed and used properly. that Is In strlct accordance wlth the manutacture's Instructlons, may cause Interference to radio and television receptlon. It has been type tested and tound to comply wlth limits tor a Class B computlng devlce In accordance wlth Sub- part J of Part 15 of FCC Rules, whlch are designed to provlde reasonable protectlon agalnst such Interference in aresldential installation. However, there Is no guarantee that Interference will not occur In a partlcular Installation. It thls equlpment dose causa Interference to radio or television receptlon, whIch can be determlned by turnlng the equlpment on and off, the user Is encouraged to try to correct the interference by one or more of the tollowing measures: reorlent the receivlng antenna relocate the computer wlth respect to the receiver move .the computer away tram the receiver plug the computer into a different outtet so that the computer and receiver are on different branch clrcults It necessary, the user should consult the dealer or an experienced radio/television technician tor additional suggestions. The user may tind the tollowing booklet, prepared by the Federal Communicatlons Commlssion, helptul: "How to Identity and Resoive Radio - TV interference Problems. ''This booklet Is avaiiable trom the U.S. Government Printlng Office. Washington. D.C., 20402, Stock No. 044 - 000 - 00345 - 4. You can determine whether your computer Is causing interference by turning It off. It the Interference stops, it was probably caused by the computer or Its perlpheral devlces. To further lsolate the problem. disconnect elther the perlpheral device or its 1/0 cable. These devices usually require shielded cable. For Epson peripheral devices, you can obtaln the proper shlelded cable trom your dealer. For non - Epson devlces. contact the manufacturer or dealer tor asslstance. Seiko Epson Corporatlon, Nagano, Japan © 1988 by Seiko Epson Corporation <strong>Al</strong>l r1ghts reserved. Prlnted In Japan No portion of thls document may be reproduced, stored In a retrleval system, or transmitted In any torm or by any means, electrlc. mechanlcal, photocopylng. recordlng, or otherwlse, wlthout the written permission of Selko Epson Corporatlon. No patent liablllty Is assumed wlth respect to use of the Information contalned herein, nor Is any liablllty assumed tor damages resultlng trom usa cf thls text. Whlle every precautlon has been taken In the preparatlon cf thls bock, the publlsher assumes no lIablllty tor errors or omisslons. EPSON ® is a reglstered trademark of Seiko Epson Corporatlon. EPSON PC AX Is trademark of Selko Epson Corporatlon. IBM ® is a reglstered trademark ot International Business Machlnes Corporation.
PRECAUTIONS Precautlonary notations throughout the text are categorlzed relative to 1) personalinjury and 2) darnage to equlpment. DANGER WARNING Signals a precautlon whlch, If ignored, could result In serlous or fatal personalinjury. Great caution should be exercised in performlng procedures preceded by DANGER Headlngs. Signals a precaution whlch, If ignored, could result In damage to equlpment. The precautlonary measures Itemlzed below should always be observed when performlng repalr/ rnalntenance procedures. DANGER 1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE. 2. NO WORD SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR L1NE OF WORK. 3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, 00 NOT CONNECT THE UNIT TO APOWER SOURCE UNTIL INSTRUCTED TO 00 SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COM PONENTS. WARNING 1. Repalrs on Epson product should be performed only by an Epsan certlfled repair techniclan. 2. Make certeln that the source voltage is the same as the rated voltage, Iisted on the serial number/rating plate. If the Epson product has a primary AC rating different from avallable power saurce, do not connect It to the power source. 3. <strong>Al</strong>ways verlfy that the Epson product has been disconnected from the power source before removlng or replaclng prlnted circult boards and/or Individual chips. 4. In order to protect sensitive microprocessors and clrcultry, use static discharge equlpment, such as antl- static wrist straps, when accesslng Internal components. 5. Replace rnalfunctlonlng components only wlth those components by the manufacture; introductlon of second - source ICs or other nonapproved components may damage the product and vold any applicable Epson warranty.
Page 1: EPSON pe AX TECHNICAL MANUAL Seiko
Page 5: PREFACE Thls manual descrlbes the t
Page 9: CHAPTER 1 PRODOCT DESCRIPTION TAßL
Page 12 and 13: PRODUCT DESCRIPTION REV.A WX Clock
Page 14 and 15: PRODUCT DESCRlP TION REV.A 1.2.1 Ma
Page 16 and 17: PRODUCT DFßCRIPTION REV.A 1.2.5 D5
Page 18 and 19: PRODUCT DESCRlPTION HEV.A 1.3 HARDW
Page 20 and 21: PRODUCT DESCRIPTION HEV.A TABU 1-3-
Page 22 and 23: PRODUCT DESCRIPTION REV.A FIGURE 1-
Page 24 and 25: 2.3.9 2.3.10 2.3.10.1 2.3.11 2.3.12
Page 26 and 27: 2-3-14 2-3-15 2-3-16 2-3-17 2-3-18
Page 29 and 30: REV.A PRINCIPLES OF OPERATION 2.1 H
Page 31 and 32: REV .A PRINCIPLES OF OPERATION 1 D1
Page 33 and 34: REV.A PRINCIPLES OF OPERATION 1) If
Page 35 and 36: REV . B PRINCIPLES OF OPERATION 2.2
Page 37 and 38: REV.A PRINCIPLES OF OPERATION A vol
Page 39 and 40: HEV.A PRINCIPLES OF OPERATION Chara
Page 41 and 42: RKV.A PRINCIPLES OF OPERATION 2.2.2
Page 43 and 44: REV.B PRINCIPLES OF OPERATION +12 +
Page 45 and 46: REV.A PRINCIPLES OF OPERATION TABLE
Page 47 and 48: N I I-' \Q 2 .3 ARTA MAHl CONTROL B
Page 49 and 50: N I N """ 2.3.1 System Clock Genera
Page 51 and 52: N I N W 2.3.1.4 Oscillator There ar
Page 53 and 54:
N 2.3.2 System Reset Signal Generat
Page 55 and 56:
N +5·5 ~Hls~ CN3~--·"'-" (j flJ5:
Page 57 and 58:
t-,) I t-,) ID 2.3.3.3 Jumper Conne
Page 59 and 60:
N ( OA TA BUS C~ TO FRO"" RA"" RA""
Page 61 and 62:
N I ~ ~ 2.3.4.2 Circuit Operation o
Page 63 and 64:
N I ~ To int......l ....ry GAATCK _
Page 65 and 66:
MOlS l :;1 MOl l@j { i~~~TRI l READ
Page 67 and 68:
N I wIQ - 1. . . I :>
Page 69 and 70:
!',) I oll J-I 2.3.5 "C 1/0 Devic
Page 71 and 72:
N },. w The LS612 has sixteen 12-bi
Page 73 and 74:
N I ~ GAATCK 10 GAATM21 I ino OMA 1
Page 75 and 76:
N I 01> -..I GAATCK { CPU GAATM' @
Page 77 and 78:
N I ~ (16-bit bus operation) * NOTE
Page 79 and 80:
N I \Jl ~ 2.3.8 Command Delay Signa
Page 81 and 82:
INT , \ DTR 00 DEN ) t +,5 INT..H C
Page 83 and 84:
N I VI \oll lOG......T... ' TOGur..
Page 85 and 86:
N I VI GAATCK GAATAB GAATRF l5590 a
Page 87 and 88:
N I VI \Cl - _.... -- - ~ AATRF GAA
Page 89 and 90:
N ~,... 2.3.14 Keyboard Interface C
Page 91 and 92:
N ~ IJ,) KID CLK KID DATA GAATCK GA
Page 93 and 94:
REV.A PRINCIPLES OF OPERATION 2.4 M
Page 95 and 96:
HEV.A PRINCIPLES OF OPERATION Data
Page 97 and 98:
REV.A PRINCIPLES OF OPERATION 1.2 M
Page 99 and 100:
REV.A PRINCIPLES OF OPERATION 2.4.3
Page 101 and 102:
REV.B PRINCIPLES OF OPERATION VFO c
Page 103 and 104:
REV.A PRINCIPLES OF OPERATION If DS
Page 105 and 106:
REV .A PRINCIPLES OF OPERATION 2.5
Page 107 and 108:
REV.A PRINCIPLES OF OPERATION 2.5.2
Page 109 and 110:
REV .A PRINCIPLES OF OPERATION T6 ~
Page 111 and 112:
REV .A PRINCIPLES OF OPERATION 2.5.
Page 113 and 114:
REV.A PRINCIPLES OF OPERATION (4) I
Page 115 and 116:
HEV.A PRINCIPLES OF OPERATION 2.5.7
Page 117 and 118:
REV.A PRINCIPLES OF OPERATION ii) E
Page 119 and 120:
REV.A PRINCIPLES OF OPERATION Key C
Page 121 and 122:
REV.A PRINCIPLES OF OPERATION 1) DE
Page 123 and 124:
REV .A PRINCIPLES OF OPERATION (10)
Page 125 and 126:
REV.A PRINCIPLES OF OPERATION (3) B
Page 127:
CHAPTER 3 OPTIONS TAßlE OF CONTENT
Page 131 and 132:
REV.A TROUBLESHOOTIBG 4.1 Service T
Page 133 and 134:
RKV.A TROUBLESHOOTING INSTANCE 1 In
Page 135 and 136:
REV.A TROUBLESHOOTIBG 4.3 RESPONSE
Page 137 and 138:
t PORT 80 01H 04H 05H 06H 07H or 08
Page 139 and 140:
t (3) Error bit pattern (1 second)
Page 141 and 142:
tt-' t-' 22H 23H 25H II GAATIO 8259
Page 143 and 144:
2AH 2BH 8254-2 RAM, GAATIO option b
Page 145 and 146:
t~ I.n (3AH) Unfixed value (Address
Page 147 and 148:
,... I ..... .t:' (3FH) Unfixed v
Page 149 and 150:
ol:l I t \C (45H) WHDC Unfixed
Page 151:
.p I N ""'" Parity check 1 80000
Page 154 and 155:
Fi gure 5-1-1 5-1-2 5-1-3 5-1-4 5-1
Page 156 and 157:
DIASSEMBLY AND ASSEMBLY HEV.A 5.1.3
Page 158 and 159:
DIASSEMBLY AND ASSEMBLY REV.A 5.1.7
Page 160 and 161:
DIASSKMBLY AN» ASSKMBLY HEV.A 5.1.
Page 162 and 163:
DISASSEMBLY AND ASSEMBLY REV.A 5.1.
Page 164 and 165:
DISASSEKBLY ABO ASSEKBLY REV.A 5.1.
Page 166 and 167:
DISASSEMBLY AND ASSEMBLY REV.A 5.3
Page 168 and 169:
DISASSEMBLY AND ASSEMBLY REV.A 5.3.
Page 171:
CHAPTER 6 ADJUSTMENT AHD MAINTENANC
Page 174 and 175:
7-1-8 Factory Settings (SPFG Board)
Page 176 and 177:
DIAGRAMS AND REFERENCE MATERIALS RE
Page 178 and 179:
DIAGRAKS AHn REFERENCE MATERIALS HE
Page 180 and 181:
Page 182 and 183:
DIAGRAHS AND REFERENCE MATERIALS RE
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
DIAGRAHS AHn REFERENCE MATERIALS RE
Page 190 and 191:
DIAGRAMS AN» REFERENCE MATERIALS R
Page 192 and 193:
D1AGRAKS AND REFERENCE MATERIALS RE
Page 194 and 195:
DIAGRAMS AHn REFERENCE MATERIALS HE
Page 196 and 197:
Page 198 and 199:
DIAGRAMS AND REFERENCE MATERIALS HE
Page 200 and 201:
Page 202 and 203:
DIAGRAMS AHn REFERENCE MATERIALS RE
Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
Page 210 and 211:
Page 212 and 213:
DIAGRAMS ARD REFERENCE MATERIALS RE
Page 214 and 215:
Page 216 and 217:
Page 218 and 219:
Page 220 and 221:
DIAGRAKS AND REFERENCE MATERIALS HE
Page 222 and 223:
Page 224 and 225:
Page 226 and 227:
DIAGRAMS AB» REFERENCE MATERIALS R
Page 228 and 229:
Page 230 and 231:
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
DIAGRAMS AND REFERENCE MATERIALS KE
Page 240 and 241:
Page 242 and 243:
DIAGRAHS AND REFERENCE MATERIALS HE
Page 244 and 245:
Page 246 and 247:
DIAGRAMS AN» REFERENCE MATERIALS H
Page 248 and 249:
Page 250 and 251:
DIAGRAMS AN» REFERENCE MATERIALS H
Page 252 and 253:
Page 254 and 255:
DIAGlU\MS AND REFERENCE MATERIALS H
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262 and 263:
Page 264 and 265:
DIAGRAMS ABO REFERENCE MATERIALS RE
Page 267 and 268:
8.1 MAJOR PARTS 8.1.1 Excluding P.C
Page 269 and 270:
8.2 COMPONENT PARTS 8.2.1 ANTA Boar
Page 271 and 272:
Unit Description ANTA Board (6) Mod
Page 273 and 274:
8.2.3 ANT-RMA Board Unit Modificati
Page 275 and 276:
8.2.5 SPFG Board Unit Modification
Page 277 and 278:
8.3.2 ANT-RM/RMA Board Jumper Setti
Page 279 and 280:
8.3.4 WHDC Board Jumper Settings Un
Page 281:
(Xl .... I 01 8.4.2 P.C.B Unit Boar
Page 285 and 286:
1 2 3 4 +5 +5 A B c o E F G H R8 Sl
Page 287 and 288:
1 2 3 4 5 +5 +5 A B c o E F G H R8
Page 289 and 290:
1 2 3 4 5 +5 +5 A B c o E F G H R8
Page 291 and 292:
A B c D E F G H J K L M N o p 4~3 ~
Page 293 and 294:
I T MD 111 I" 13 12 • 11 10 9 •
Page 295:
PG TO POWER SUPPlY UNIT NO CONNECT
Page 298 and 299:
OUTPUT SOCKET ® RIII CI06 O.OI/lF
Page 300 and 301:
T DACK2 2 3 4 t- 0 ...J CJ) Z 0 5 0
Page 302 and 303:
A B c o E F G H 1 2 3 4 5 6 I ọ
Page 304 and 305:
* +5V -r ,,;I: R2 01 ~ J27K + ~ CI
Page 307 and 308:
I A B c o E F G H T 2 3 JI -DRIVE S
Page 309 and 310:
134 132 126 500 \ --- ~ I 103 /~'~3
Page 311 and 312:
EPSON OVERSEAS MARKETING LOCATIONS
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