Panasonic JB-3300 Technical Manual page 10

IV. KEYBOARD
SPECIFICATIONS ...........eceee- we ccc cee ec eee eee eee wee e ee eeeee Iv-1
LAYOUT AND KEYBOARD MARKINGS 2.2... 2. cc ee ce ccc ccc ccc ew cee rece cece ete cee IV-2
2.1 ASCII VErsSion ccc ccc ccc ccc cc ccc ccc cece e eee coc eee weet eee eect ccees IV-2
2.2 English VErsSion Lice ccc ccc ccc cc ec cee ccc cece ccc ee eee ewe nese eces IV-3
2.3 Swedish/Finnish Version ..... ccc ccc ccc ccc cc cccce ec cece cece nce ces IV~-3
2.4 French VErSion .e ccc ccc ccc cc cc cc cw ec ewe cece cece enc ec cere cesses IV-4
2.5 GErMAN VELSION Lecce cccccccccccccccccscesecccccssccsccsccesccees IV-4
BLOCK DIAGRAM 2... ccc ccc cc ce we ce ce cece ccc ewe etter ee ee eee eee eee c ees ccece IV-5
CIRCUIT DESCRIPTION 2... ccc ccc cw ee ce we cee weer ccc ce ete cee e eee eee we eee eee IV-6
4.1 Power Supply .........--. ccm reer were erence errr ens cesses sesssces IV-6
4.2 OSCLILLACOL Lecce cc ccc ccc ccc ccc ec ce cece cee ew eee eee eee weeecees IV~-6
4.3 Data Type and Logic ........2ce eeemcm mew ccc cece ccc cece cces TV-6
4.4 KBDATA and KBCLK Output Timing 2... ccc cc cee cece were crew eees IV-7
4.5 HARD RESET ccc ccc ccc cere reece ce wee cee eee eee eee ete e eee ee ee sccens IV-11
4.6 SCANNING cecccccccccccv cc cccccecccccc cc ecec ccc e cece cere sccsccces IV-11
4.7 Repeat FUNCCION cece c ccc cece ccc ccc ccc cece cerns cece secs eeacesscceee IV-14
SELF TEST Jo. cc eee ee ee wr wc cece ee ccc eer cee eee reece ee eee eee reso cee ne nccs IV-15
5.1 Self Test Start Condition ec ce meme ccc cree eee merece eect crease eeee IV-15
5.2 Self Test Flowchart 2... cc cc ccc ccc ecw cc eee ec re eee cece eee ees eeees IV-16
DISASSEMBLY PROCEDURE 2... cc. ccc ccc cc ccc ee wcrc ce ee cree wr eee ee eee arte sees IV-17
6.1 Keyboard cece cc cence s crc c cane ccc aces seca senses ese sessssesecceee IV-17
6.2 Key SwitcheS .o cece ccc ccc ccc ccc ccc c ccc cee rece e cece wees see cene IV-19
TROUBLESHOOTING . cc ccc ccc cw ccc re ec ccc eee ec cee eet eee weet reece ee eeeee IV-22
REPLACEMENT PARTS LIST AND DRAWING ..... 2. ccc ccc ew ce ccc ee ete eee eee eae IV-27
8.1 Exploded VIEW ccc cece ccc ccc cre ccc reece cee c cree cee cces ees eesees IV-27
8.2 Coard Table Lec ccc cc ce ccc ee cc wwe cee cece ee ec cere eee were eee es IV-32
8.3 Circuit D1iaAgGraM occ cw cc ccc ccc ccc sc ses ecscescsces ec cece ccc eee TV-33
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