Panasonic KX-FP81BX Service Manual

Contents

NO. SIGNAL I/O POWER SUPPLIEDVOLTAGEDESCRIPTION65 XCAS1/IOP O 5V DRAM (IC503) CULUM ADDRESS STROBE66 XCAS2/IOP O 5V OUTPUT PORT (MDMRST)67 XRESCS2 O 5V NOT USED68 DB3 I/O 5V CPU DATA BUS 369 DB2 I/O 5V CPU DATA BUS 270 DB4 I/O 5V CPU DATA BUS 471 DB1 I/O 5V CPU DATA BUS 172 DB5 I/O 5V CPU DATA BUS 573 DB0 I/O 5V CPU DATA BUS 074 DB6 I/O 5V CPU DATA BUS 675 VSS GND POWER SOURCE (GND)76 VDD (3.3V) 3.3V POWER SOURCE (3.3V)77 DB7 I/O 5V CPU DATA BUS 778 XROMCS I/O 5V ROM (IC502) CHIP SELECT79 RD O 5V CPU RD80 WR O 5V CPU WR81 VSS GND POWER SOURCE (GND)82 VDD (5V) 5V POWER SOURCE (5V)83 ADR0 O 5V CPU ADDRESS BUS 084 ADR1 O 5V CPU ADDRESS BUS 185 ADR2 O 5V CPU ADDRESS BUS 286 ADR3 O 5V CPU ADDRESS BUS 387 ADR4 O 5V CPU ADDRESS BUS 488 ADR5 O 5V CPU ADDRESS BUS 589 ADR6 O 5V CPU ADDRESS BUS 690 ADR7 O 5V CPU ADDRESS BUS 791 ADR8 O 5V CPU ADDRESS BUS 892 ADR9 O 5V CPU ADDRESS 993 ADR10 O 5V CPU ADDRESS 1094 ADR11 O 5V CPU ADDRESS 1195 ADR12 O 5V CPU ADDRESS 1296 VSS GND POWER SOURCE (GND)97 VDD (5V) 5V POWER SOURCE (+5V)98 RBA0 O 5V ROM/RAM BANK ADDRESS 099 RBA1 O 5V ROM/RAM BANK ADDRESS 1100 RBA2 O 5V ROM/RAM BANK ADDRESS 2101 RBA3 O 5V ROM/RAM BANK ADDRESS 3102 RBA4 O 5V ROM/RAM BANK ADDRESS 4103 RBA5 O 5V ROM/RAM BANK ADDRESS 5104 RBA6/IOP96 O 5V OUTPUT PORT(TONE2EN)105 STB1 O 5V STROBE SIGNAL OUTPUT TO THERMAL HEAD106 STB2 O 5V STROBE SIGNAL OUTPUT TO THERMAL HEAD107 STB3 O 5V STROBE SIGNAL OUTPUT TO THERMAL HEAD108 XRESET I 5V RESET INPUT109 XORESET O 5V RESET OUTPUT110 VDD (5V) 5V POWER SOURCE (+5V)111 VSS GND POWER SOURCE (GND)112 XRESETI I 5V RESET INPUT113 WDERR O 5V WATCHED ERROR OUTPUT SIGNAL114 THDAT O 5V RECORDED IMAGE OUTPUT115 THCLK O 5V CLOCK OUTPUT FOR DATA TRANSFER116 VDD (3.3V) 3.3V POWER SOURCE (3.3V)117 VSS GND POWER SOURCE (GND)118 THLAT O 5V PULSE OUTPUT FOR DATA LATCH119 STBNP I 5V INPUT PORT (TEST)120 RM0/IOP O 5V OUTPUT PORT (A)121 RM1/IOP I 5V INPUT PORT (JOG1)122 RM2/IOP I 5V INPUT PORT (JOG2)123 RM3/IOP O 5V OUTPUT PORT (B)124 RXE/IOP I 5V INPUT PORT (NOT USED) PULL DOWN125 TMO O 5V MOTOR A PHASE126 VDD (5V) 5V POWER SOURCE (+5V)127 VSS GND POWER SOURCE (GND)128 TM1/IOP O 5V MOTOR B PHASE129 TM2/IOP O 5V MOTOR /A PHASE130 TM3/IOP O 5V MOTOR /B PHASE131KX-FP81BX / KX-FP81CX / KX-FP82CX