Sharp ER-A530 Service Manual Page 1

CODE : 00ZqSERVICE MANUALCONTENTSParts marked with "!" are important for maintaining the safety of the set. Be sure to replace these parts w

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 9 –POWER SUPPLY/CONTROL PINSP91 6 P91/RxD3STH I − In UP-P16DP STH SIGNALP92 5 P92/TxD3HTS O L Out L UP-P16DP H

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 10 –4. PRINTER CONTROLThe PR-58HM printer is incorporated.4-1. STEPPING MOTOR CONTROLThe stepping motor is dri

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 11 –5. A/D CONVERSIONIn the ER-A520/530, the following three kinds of signals are input tothe A/D conversion p

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 12 –6-2. KEY/DISPLAY SCANThe Key/display scan and key read are performed at the following timing. 1Key/display

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 13 –6-3. DISPLAYThe ER-A520/530 is provided with the LCD display of 5 x 7 dot, 2 line,16 digit on the operator

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 14 –11. RISTRICTIONS ON PRINT RATIOMax. 288dot/1line x 140line (Corresponds to black background LOG print)Ave.

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM– 15 –CHAPTER 5. DIAGNOSTIC PROGRAM1. TEST ITEMSThe test items are as follows:*Starting DIAG.Mode switch: SRVkey o

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM– 16 –3) PRINTER TEST1Key operation10232Test procedureAt the receipt side, the logo is also printed and the receip

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM– 17 –7) CLOCK TEST1Key operation10732Test procedure3 Check that:“–“ blinks and the clock counts up.4 End of testi

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM– 18 –11) STANDARD RAM TEST1Key operation12032The standard RAM is checked.The contents of memory must be the same

ER-A520U/ER-A530U SPECIFICATIONS– 1 –CHAPTER 1. SPECIFICATIONS1. APPEARANCEER-A520ER-A5302. RATING3. KEYBOARD3-1. KEYBOARD LAYOUTER-A520ER-A5303-2. KE

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM– 19 –13) CPU INTERNAL RAM TEST1Key operation12232Test procedureThe test program tests internal RAM (10 Kbytes) of

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM– 20 –Data communication checkA loopback test of 256-byte data between is performed.DATA: $00 - $FF BAUD RATE:96

ER-A520U/ER-A530U IPL FROM EP-ROM– 21 –CHAPTER 6. IPL FROM EP-ROMBefore installation, unplug the AC power cord from the AC outlet.1. Open the top cabi

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 22 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 23 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 24 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 25 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 26 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 27 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 28 –ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678DCBA ABCD8765432112345678D

ER-A520U/ER-A530U SPECIFICATIONS– 2 –Note: The following function keys can optionally be incorporated in place of those shown in the figure of the sta

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 29 –PWB LAYOUT

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 30 –

ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT– 31 –

qSHARP CORPORATIONDigital Document Systems GroupProducts Quality Assurance DepartmentYamatokoriyama, Nara 639-1186, Japan2004 March Printed in Japan t

ER-A520U/ER-A530U SPECIFICATIONS– 3 – Optional Keys and DescriptionsNote: Department and direct PLU keys can be expanded. If you requireexpansion of t

ER-A520U/ER-A530U SPECIFICATIONS– 4 –5. DISPLAY5-1. OPERATOR DISPLAYLayout:5-2. CUSTOMER DISPLAYLayout:6. PRINTER1) PRINTER (PR-58HM)2) PAPERDisplay d

ER-A520U/ER-A530U OPTIONS– 5 –7. DRAWER[OUTLINE]• Standard equipment: Yes• Max. number of additional drawers: 1• The drawer consists of:1) Drawer box

ER-A520U/ER-A530U MASTER RESET AND PROGRAM RESET– 6 –CHAPTER 3. MASTER RESET AND PROGRAM RESETThe SRV key is used for performing entries in the SRV mo

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 7 –CHAPTER 4. HARDWARE DESCRIPTION1. BLOCK DIAGRAMER-A520 and ER-A5302. MEMORY MAP2-1. ADDRESS MAPCPUMITSUBISH

ER-A520U/ER-A530U HARDWARE DESCRIPTION– 8 –3. CPU PIN TABLEM16C/80 PORT USED IN PROCESSOR MODE: MICROPROCESSOR MODE (SEPARATE BUS 8bit WIDTH)PORTPIN N