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PRINCIPLES OF OPERATION REV.B 2.2.2.3 +sV Supply Circuit a) Basic Circuit The +sV circuit is shown in Figure 2-2-15. The function of the +5 volts circuit is same as -SV circuit and -12V circuit. L7 + + '--........---........-------------.----0 G ND Tl FIGURE 2-2-15. +5V SUPPLY CIRCUIT b) Voltage Stability Circuit \------"4....----------0 + 5 \----+-----.-----(J GND 5 OUT HAI6654 EI R7 e If RVl 2.2 K GND Re Z4 R32 910 FIGURE 2-2-16. +5V VOLTAGE STABILITY CIRCUIT 2-10
HEV.A PRINCIPLES OF OPERATION Characteristics of Photo Coupler PC2 In the photo coupler, the output current (IC) increases in proportion to the current flowing in the LED (IF). FIGURE 2-2-17. Characteristics of HA16654 If OUTPUT CURRENT OF PHOTOCOUPLER The 8th-pin error input terminal and the 5th-pin output terminal of the HA16654 have the following relation. * If the voltage of ERROR INPUT terminal rise, the pulse width of the output terminal is reduced. ERROR INPUT DEAD BAN 0 --+-+-~~--t-~-""'~""'-- I eT11 1 1 1 1 11 OUTPUT _ ....... "-'---~ FIGURE 2-2-18. OUTPUT SIGNAL WAVEFORM Characteristics of 24 When the reference vo1tage of the IC24 reaches a fixed voltage, current flows from cathode to anode shown in Figure 2-2-17. 2-11
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 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: REV.A PRINCIPLES OF OPERATION A vol
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
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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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DIAGRAHS AND REFERENCE MATERIALS RE
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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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DIAGRAMS AHn REFERENCE MATERIALS RE
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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
Page 269 and 270:
8.2 COMPONENT PARTS 8.2.1 ANTA Boar
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Unit Description ANTA Board (6) Mod
Page 273 and 274:
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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