www.freeservicemanuals.info 3/22/15 1. SPECIFICATIONS Power consumption 120 V 220 V 230 V 240 V In operation Max. 0.28 A 0.17 A 0.16 A 0.15 A Stand by 0.14 A 0.09 A 0.08 A 0.07 A Mode SW OFF Max. 0.12 A 0.08 A 0.07 A 0.06 A...
www.freeservicemanuals.info 3/22/15 4. CIRCUIT EXPLANATION 4-1. Power supply circuit Q1: Power transistor Q2: Voltage detection transistor Voltage level at above check point (unit: V ) Measurement position Voltage (V) 12.5V 5.3V 6.2V 2.47V — 4 — Digitized in Heiloo, Holland.
www.freeservicemanuals.info 3/22/15 4-2. CPU (uPD78052GC-093-3B9) Status of Status of Pin No. Signal Description I n / O u t Power On Power OFF 1 FB3 Not used — — — 2 FB4 RAM bank 3 High High 3 FB5 RAM bank 4 High High 4 AVSS...
Page 8
www.freeservicemanuals.info 3/22/15 Status of Status of Pin No. Signal Description I n / O u t Power On Power OFF 56 HD.E Head drive signal of printer (HD.E) 57 HD.F Head drive signal of printer (HD.F) 58 HD.G Head drive signal of printer (HD.G) 59 HD.H Head drive signal of printer (HD.H) 60 RESET...
www.freeservicemanuals.info 3/22/15 4-3. Display controller (uPD16312GB-3B4) Status of Status of Pin No. Signal Description I n / O u t Power On Power OFF 1 SW1 Not used (GND) — 2 SW2 Not used (GND) — 3 SW3 Not used (GND) —...
www.freeservicemanuals.info 3/22/15 4-4. Initilize IC (Reset circuit) VDD: Voltage of memory protection battery To Pin No.60 of CPU When the voltage level at Pin No.60 of CPU is not stabilized, CPU does not work properly in rare case. Therefore, this machine uses the initialize IC for stabilizing the voltage. Even the voltage level of VDD (Pin No.2) is changed, Pin No.1 of initilize IC outputs stabilized 5 volts.
www.freeservicemanuals.info 3/22/15 4-7. RAM / ROM bank selection circuit This circuit is used for address decoder for memory. RAM 1 M RAM 256 K Memory Map 00001 00011 00101 000000 00100 11101 00010 00110 0000 Mask ROM Bank Bank Bank Bank Bank Bank...
www.freeservicemanuals.info 3/22/15 4-8. Head drive circuit for printer TR4 TR3 Motor drive circuit Normally, the transistor of motor drive circuit is followng condition. TR1, TR2, TR5 : TR3, TR4 : MD (-) signal : VP level When the CPU want to rotate the motor, CPU change the MD signal to “High” from “Low”. Then, TR1, TR2 and TR5 are become ON and MD (-) signal is become GND level, and then motor is rotated.
www.freeservicemanuals.info 3/22/15 4-9. VPP sensor circuit Protection circuit To prevent the circuit breakage, the protection circuit watches the voltage level of VCC, VDD and VPP. When the each voltage level is more than following condition, this circuit cuts the voltage. VCC,VDD: In case these voltages are become over voltage, this circuit outputs “SCR”...
www.freeservicemanuals.info 3/22/15 5. DIAGNOSTIC 5-1. To start the diagnostic program 1. Set the mode switch to “OFF” position. 2. Pressing the “FEED” button and turn the mode switch to “PRG” position. 3. Release the “FEED” button. 4. Input “9999900000” and press “ST” (“#2” key). 5.
Page 15
www.freeservicemanuals.info 3/22/15 2. Switch status test Press “C” button, the switch status is appeared on the display. [DISPLAY] No display No display No display No display Low battery L: Low battery Nil: Battery OK PAD2 status 1: Short 0: Open PAD1 status 1: Short 0: Open...
Page 16
www.freeservicemanuals.info 3/22/15 3. Individual function test 3-1. Series test “Y” “X” “1” + “#2” key 0: Normal test 1: Execute next test even if an error happend at ROM check sum 0: Autockecking of RAM capacity 1: 256 Kbit RAM test 2: 1 Mbit RAM test Execute the following test in order.
Page 17
www.freeservicemanuals.info 3/22/15 3-2. Print test Input “Y” “X” “2” + “#2” key. 0: Print the following character continuously. Printing speed : 45 times / Min. 1: Print the following character, open the drawer and issue a receipt Printing speed : 25 times / Min.
Page 18
www.freeservicemanuals.info 3/22/15 3-6. All character print test Input “8” + “#2” key. “8” + “#2”: Pirnts all character on receipt once. “1” “8” + “#2”: Prints all character on receipt continuously. To stop this test, press any key or turn the mode switch to “OFF” position. 3-7.
www.freeservicemanuals.info 3/22/15 3-8. RS232C port test Input “2” “0” “7” + “#2” key. Execute the RS232C loop back test continuously using loop back connector. In case an error happens, the machine issues an error receipt then stop this test. Test description: 1: Level check at DSR signal ( Low/High) 2: Send the data (05Ah) from TxD and receive it at RxD terminal.
www.freeservicemanuals.info 3/22/15 6. ERROR CODE 6-1. Operation error code Error codes appear on display whenever you make a mistake during operation. Error Code Meaning Action Mode switch position changed before finalization. Return the mode switch to its original setting and finalize the operation. Registration without entering a clerk number.
www.freeservicemanuals.info 3/22/15 6-2. System lock code The following error code appears on display and receipt when the machine is lock up. Execute the Flag MAC or MAC operation to clear these errors. Error code: Display: X - - - - - - - - - Receipt: X ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! X: Lock code...
www.freeservicemanuals.info 3/22/15 7. S-80745 / S-80719 8. M5237L tion protec Heat OP AMP protection Voltage adjust Start up STD. Voltage Current protection Terminal Voltage adjust 9. MAX232 — 22 — Digitized in Heiloo, Holland.
Page 27
www.freeservicemanuals.info 3/22/15 PAD condition B.D.Bu PAD1 Open Short Description: Board No. Drawing No. PAD2 MAIN PCB E247-1 (1/8) E240451 Short Short — 26 — Digitized in Heiloo, Holland.
www.freeservicemanuals.info 3/22/15 Item Code No. Parts Name Specification Version 3700 4281 Power cord PS204 Other countries 6221 4802 Power cord M2511 Germany, Europe 6248 0396 Lower case E247 E140118-4 6248 0779 FG plate E340646-1 6248 0873 Connector fixing plate E247 E340524-1 Screw with washer 3X8 ZMC-3...