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PRODUCT DESCRIPTION REV.A WX Clock The clock input to the numerical processor extension (NPX) may be changed according to the NPX version. The standard clock input is 8 MHz (AT uses 4 MHz and the new AT uses 5.33 MHz). Other clock-inputs, 20, 16, or 12 MHz (divided by three in the NPX) may be selected by sett ing jumper connectors on the system board. Mass Memory EQU11Y 111+ / EPSON PC AX supports 4 types of built-in mass memory. Hass Memory Slots EQUITY 111+ / EPSON PC AX has 5 half-height slots for FDD's and IIDD's. There are several ways to install the drives in these slots: (1) 4 half-height drives, (2) 3 half-height drives and a full-height drive, (3) a half-height drive and 2 full-height drives. A maximum of four drives can be installed. Power Supply EQUITY 11I+ / EPSON PC AX has an IBM AT compatible power unit. Hs specification is world wide, using 115 V /220 V, switch selected, UL/CSA and TUV standard, and FCC/FTZ standard. The number of power cables is 4. Multi-function Card The multi-function carc in the EPSON proprietary slot provides the serial communication port, parallel printer port and floppy disk controller. Hard Disk Controller The hard disk controller contained in the prorietary slot will control two hard disks. Packaging <strong>Al</strong>l switches and controls are easily accessible. Switches control the processor execution speed, and the type of the display, color or monochrome. 1t is easy to connect the keyboard, control the volume, push the reset button, turn the power on or off, and lock or unlock the main unit. When the unit i8 locked, the system does not accept key input and ignores the reset button. Exterior The unit is designed in line with the EQU1TY / EPSON PC series, which visually distinguishes it from the numerous compatibles. 1-2
REV.A PRODUCT DESCRIPTION 1.2 SPECIFICATION The following sections describe detail specifications by major subassembly. POWER SUPPLY Input 115 VAC 230 VAC F requency . Power Consumption .....••••. Surge Current •......•.•.... Min. 92 V Max. 132 V Min. 196 V Max. 265 V 49 - 61Hz 115 VAC: 42 A O-P Hax. Hax. 4 A 2.5 A 230 VAC approx. 60W (0.5 sec. more) INSOLATION STRKRG'l'H 115 VAC: AC 1.25 kV (l min.) (AC-FG, AC- Secondary) 230 VAC: AC 1.25 kV (1 min.) (AC-FG) AC 3.75 kV (1 min.) (AC-Secondary) INSOLATION RESISTANCE 25 MOhm more (500 VDC) (AC-FG,AC-Secondary) 1 MOhm more (250 VDC) (SG-FG) (DIC short jumper not installed) ElNIRONMENT CONDITIONS OPERATING Temperature 5~ to 35~ Humidity 20% to 80% (non-condensing) Maximum wet bulb 29 deg. NON-OPERATING - 20° 'C to 60°C 10% to 90% 40 deg. STORAGE 5% to 95% 45 deg. Vibration Shock (non-HDD) Shock (HDD) <strong>Al</strong>titude (HDD) 0.2 G 1 G (less than 10ms) 1 G (less than 25mm 0-60Hz) o to 3000 m. ASL 1 G (non-HDD) 0.5 G (HDD) 3 G (less than 10ms) 3 G (less than 25mm 0-60Hz) -300 to 3600 m. ASL 3 G (non-HDD) 0.5 G (FIDD) 30 G (less than (lOms) 20 G (less than 25mm 0-60Hz) -300 to 3600 m. ASL 1-3
Page 1 and 2: EPSON pe AX TECHNICAL MANUAL Seiko
Page 3 and 4: PRECAUTIONS Precautlonary notations
Page 5: PREFACE Thls manual descrlbes the t
Page 9: CHAPTER 1 PRODOCT DESCRIPTION TAßL
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
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N I ~ To int......l ....ry GAATCK _
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MOlS l :;1 MOl l@j { i~~~TRI l READ
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N I wIQ - 1. . . I :>
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!',) I oll J-I 2.3.5 "C 1/0 Devic
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N },. w The LS612 has sixteen 12-bi
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N I ~ GAATCK 10 GAATM21 I ino OMA 1
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N I 01> -..I GAATCK { CPU GAATM' @
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N I ~ (16-bit bus operation) * NOTE
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N I \Jl ~ 2.3.8 Command Delay Signa
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INT , \ DTR 00 DEN ) t +,5 INT..H C
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N I VI \oll lOG......T... ' TOGur..
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N I VI GAATCK GAATAB GAATRF l5590 a
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N I VI \Cl - _.... -- - ~ AATRF GAA
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N ~,... 2.3.14 Keyboard Interface C
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N ~ IJ,) KID CLK KID DATA GAATCK GA
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REV.A PRINCIPLES OF OPERATION 2.4 M
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HEV.A PRINCIPLES OF OPERATION Data
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REV.A PRINCIPLES OF OPERATION 1.2 M
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REV.A PRINCIPLES OF OPERATION 2.4.3
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REV.B PRINCIPLES OF OPERATION VFO c
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REV.A PRINCIPLES OF OPERATION If DS
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REV .A PRINCIPLES OF OPERATION 2.5
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REV.A PRINCIPLES OF OPERATION 2.5.2
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REV .A PRINCIPLES OF OPERATION T6 ~
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REV .A PRINCIPLES OF OPERATION 2.5.
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REV.A PRINCIPLES OF OPERATION (4) I
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HEV.A PRINCIPLES OF OPERATION 2.5.7
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REV.A PRINCIPLES OF OPERATION ii) E
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REV.A PRINCIPLES OF OPERATION Key C
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REV.A PRINCIPLES OF OPERATION 1) DE
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REV .A PRINCIPLES OF OPERATION (10)
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REV.A PRINCIPLES OF OPERATION (3) B
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CHAPTER 3 OPTIONS TAßlE OF CONTENT
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REV.A TROUBLESHOOTIBG 4.1 Service T
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RKV.A TROUBLESHOOTING INSTANCE 1 In
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REV.A TROUBLESHOOTIBG 4.3 RESPONSE
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t PORT 80 01H 04H 05H 06H 07H or 08
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t (3) Error bit pattern (1 second)
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tt-' t-' 22H 23H 25H II GAATIO 8259
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2AH 2BH 8254-2 RAM, GAATIO option b
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t~ I.n (3AH) Unfixed value (Address
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,... I ..... .t:' (3FH) Unfixed v
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ol:l I t \C (45H) WHDC Unfixed
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.p I N ""'" Parity check 1 80000
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Fi gure 5-1-1 5-1-2 5-1-3 5-1-4 5-1
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DIASSEMBLY AND ASSEMBLY HEV.A 5.1.3
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DIASSEMBLY AND ASSEMBLY REV.A 5.1.7
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DIASSKMBLY AN» ASSKMBLY HEV.A 5.1.
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DISASSEMBLY AND ASSEMBLY REV.A 5.1.
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DISASSEKBLY ABO ASSEKBLY REV.A 5.1.
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DISASSEMBLY AND ASSEMBLY REV.A 5.3
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DISASSEMBLY AND ASSEMBLY REV.A 5.3.
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CHAPTER 6 ADJUSTMENT AHD MAINTENANC
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7-1-8 Factory Settings (SPFG Board)
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DIAGRAMS AND REFERENCE MATERIALS RE
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DIAGRAKS AHn REFERENCE MATERIALS HE
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Page 182 and 183:
DIAGRAHS AND REFERENCE MATERIALS RE
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Page 188 and 189:
DIAGRAHS AHn REFERENCE MATERIALS RE
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DIAGRAMS AN» REFERENCE MATERIALS R
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D1AGRAKS AND REFERENCE MATERIALS RE
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DIAGRAMS AHn REFERENCE MATERIALS HE
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DIAGRAMS AND REFERENCE MATERIALS HE
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Page 202 and 203:
DIAGRAMS AHn REFERENCE MATERIALS RE
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Page 212 and 213:
DIAGRAMS ARD REFERENCE MATERIALS RE
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DIAGRAKS AND REFERENCE MATERIALS HE
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DIAGRAMS AB» REFERENCE MATERIALS R
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DIAGRAMS AND REFERENCE MATERIALS KE
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DIAGRAHS AND REFERENCE MATERIALS HE
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DIAGRAMS AN» REFERENCE MATERIALS H
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DIAGRAMS AN» REFERENCE MATERIALS H
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DIAGlU\MS AND REFERENCE MATERIALS H
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DIAGRAMS ABO REFERENCE MATERIALS RE
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8.1 MAJOR PARTS 8.1.1 Excluding P.C
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8.2 COMPONENT PARTS 8.2.1 ANTA Boar
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Unit Description ANTA Board (6) Mod
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8.2.3 ANT-RMA Board Unit Modificati
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8.2.5 SPFG Board Unit Modification
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8.3.2 ANT-RM/RMA Board Jumper Setti
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8.3.4 WHDC Board Jumper Settings Un
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(Xl .... I 01 8.4.2 P.C.B Unit Boar
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1 2 3 4 +5 +5 A B c o E F G H R8 Sl
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1 2 3 4 5 +5 +5 A B c o E F G H R8
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1 2 3 4 5 +5 +5 A B c o E F G H R8
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A B c D E F G H J K L M N o p 4~3 ~
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I T MD 111 I" 13 12 • 11 10 9 •
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PG TO POWER SUPPlY UNIT NO CONNECT
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OUTPUT SOCKET ® RIII CI06 O.OI/lF
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T DACK2 2 3 4 t- 0 ...J CJ) Z 0 5 0
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A B c o E F G H 1 2 3 4 5 6 I ọ
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* +5V -r ,,;I: R2 01 ~ J27K + ~ CI
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I A B c o E F G H T 2 3 JI -DRIVE S
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134 132 126 500 \ --- ~ I 103 /~'~3
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EPSON OVERSEAS MARKETING LOCATIONS
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