Service Manual
Page 8
... 28000h USB controller 30000h Segment Latch Address /CS1 /CS0 80000h B0000h CPU internal MASK ROM 320KByte B0000h-FFFFFh FFFFFh XE-A203U/XE-A203A HARDWARE DESCRIPTION - 6 - HARDWARE BLOCK DIAGRAM POWER DRY Battery 5.8V 5.0V BUZZER 3.3V 7.9V 23.8V... 12MHz CPU Renesus RESET IC 32.768kHz DRAWER M30624MWPD85FP ROM 320KByte RAM 24KByte LV125 HCT04 SD CARD Driver/Sensor PRINTER MT53II MOTOR S-RAM 128KByte USB Controller M66291GP USB Type B 74H374 SEG Driver...
... 28000h USB controller 30000h Segment Latch Address /CS1 /CS0 80000h B0000h CPU internal MASK ROM 320KByte B0000h-FFFFFh FFFFFh XE-A203U/XE-A203A HARDWARE DESCRIPTION - 6 - HARDWARE BLOCK DIAGRAM POWER DRY Battery 5.8V 5.0V BUZZER 3.3V 7.9V 23.8V... 12MHz CPU Renesus RESET IC 32.768kHz DRAWER M30624MWPD85FP ROM 320KByte RAM 24KByte LV125 HCT04 SD CARD Driver/Sensor PRINTER MT53II MOTOR S-RAM 128KByte USB Controller M66291GP USB Type B 74H374 SEG Driver...
Service Manual
Page 11
... STRB1# Printer STB1# 94 P102 STRB2# Printer STB2# 30 P70 DAT Printer print data 28 P72 PCLK Printer forwarding clock 90 P106 LATCH# Printer data latch 91...AN1/P101 VPTEST Printer head voltage monitor 93 AN3/P103 VBAT Battery voltage monitor XE-A203U/XE-A203A HARDWARE DESCRIPTION - 9 - Communication with the SD card is mapped to... P15 IN1 Paper feed motor (IN1) 74 P16 ENA2 Paper feed motor (ENA2) 73 P17 ENA1 Paper feed motor (ENA1) Driver IC input (CPU output) Motor drive signal STEP IN1 IN2 ENA1 ENA2 A (OUT1) B (OUT3) /A (OUT2) /B (OUT4) 1 L L H H H H L...
... STRB1# Printer STB1# 94 P102 STRB2# Printer STB2# 30 P70 DAT Printer print data 28 P72 PCLK Printer forwarding clock 90 P106 LATCH# Printer data latch 91...AN1/P101 VPTEST Printer head voltage monitor 93 AN3/P103 VBAT Battery voltage monitor XE-A203U/XE-A203A HARDWARE DESCRIPTION - 9 - Communication with the SD card is mapped to... P15 IN1 Paper feed motor (IN1) 74 P16 ENA2 Paper feed motor (ENA2) 73 P17 ENA1 Paper feed motor (ENA1) Driver IC input (CPU output) Motor drive signal STEP IN1 IN2 ENA1 ENA2 A (OUT1) B (OUT3) /A (OUT2) /B (OUT4) 1 L L H H H H L...