SPECIFICATIONS Input Keyboard layout : Typewriter (QWERTY) Character Types Alpha (English and other languages) : 151 Numbers : Symbols : Illustrations : Display Type : 48 X 32-dot liquid crystal display Number of columns : Character matrix : 16 X 16-dot Printing Type : 64-dot thermal transfer...
CLEANING THE PRINTER HEAD AND ROLLER 1 : Make sure to turn the power switch off. 2 : Open the tape cartridge compartment cover. 3 : Remove the tape cartridge. 4 : Use a cotton swab dipped in alcohol to clean the printer head and roller. 5 : Replace the tape cartridge and close the compartment cover.
BLOCK DIAGRAM LCD 49 X 32 CD427-TS Comparator LCD driver LCD driver BA10339F-T1 HD44105H HD44102CH COMMON SEGMENT Chassis unit Keyboard Motor driver T6C37 BA12003 Thermal Head Reset IC RH5VL45AA-T1 VDD1 ( +5V for digital circuit) TC531001CF-15 (+9V for printer) VDD2 (+5V for RAM) VCON Q3 / Q4...
PRECAUTIONS To prevent damage of the thermal head caused by static electricity when assembling the chassis ass'y into the unit, the following steps must be followed; 1 : Turn the power switch off. 2 : Discharge the capacitor C5(2200µF) on the PCB Z556-1. 3 : Connect the FPC of chassis ass'y into a connector CN4 of PCB Z556-1.
CIRCUIT DESCRIPTION Setting the batteries or AC adaptor (see figure 7) When setting the batteries or AC adaptor, the voltage VDD2 is always applied to RAM and CPU since Q6 and IC5 are turned on. Power on sequence (see figure 7) When the power switch is turned on, PON signal is being H (PON = VDD2).
LSI PIN FUNCTION CPU (T6C37) : LSI1 Name I / O Function Read signal for memory devices Write signal for memory devices +5V source 4~15, 17~21 A0~A11, EA12~EA16 Address bus Ground (0V) source +5V source Chip enable signal for ROM Chip enable signal for RAM RNK1 Thermal head rank setting...
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LCD driver (HD44105H) : LSI201 N a m e I / O Function 1~12, 41~60 X1~X32 LCD drive output I / O I/O pin for 2 way shift register and shift data Ground 15, 16 FS1, FS2 Select frequency 17~19 DS1~DS3 Select display duty Oscillator...
DIAGNOSTIC PROGRAM Note : Make the reset operation after RAM check, because the RAM check break the data stored in RAM. Check item Operation Display N o t e (BOOT) Press ON while pressing Main menu 0 ALL 7 VP keys, SET + RETURN + 1 RAM 2 LCD...
MESSAGES Message Meaning Action NO DATA! There is no data stored in memory. Store some data before trying to perform this operation. NOT ENOUGH There is not enough unused memory to Reduce the size of the data you are MEMORY! perform the operation.