Casio JD5000 Service Manual
JD-5000(LX-171)
INDEX
JUL. 1993
(without price)
JD-5000(BU)
R
CONTENTS
1. SCHEMATIC DIAGRAM................................................................................................ 1
2. SPECIFICATIONS ......................................................................................................... 3
3. LSI PIN FUNCTION....................................................................................................... 4
4. OPERATION CHECK .................................................................................................... 7
5. TO SAVE THE DATA TO OTHER MACHINE............................................................... 8
6. EXPLODED VIEW ....................................................................................................... 11
7. PARTS LIST ................................................................................................................ 13
1. SCHEMATIC DIAGRAM
— 1 —
2. SPECIFICATIONS
Display: Liquid crystal display
Memory Capacity: 6,144 bytes
Power Supply: Two lithium batteries (CR2032) ... Main and Back-up
Power Consumption: 0.05W
Battery Life: Main battery: Approximately 7,000 hours (1 hour use per
day)
Back-up battery: Approximately 3 years after the low main
battery warning appears on the display
Auto Power Off: Approximately 6 minutes after last key operation
Ambient Temperature
Range: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions: Open: 9.3(H) × 145(W) × 163(D) mm
3
(
/8"(H) × 5 3/4"(W) × 6 3/8"(D))
Closed: 13.9(H) × 145(W) × 84(D) mm
1
(
/2"(H) × 5 3/4 "(W) × 3 1/4"(D))
Weight: 112 g(4 oz) including batteries
— 3 —
3. LSI PIN FUNCTION
1. CPU (HC3000-03-F1)
Pin No. Signal In/Out Function
1 VREG3 Out Power supply for RAM / 3(V)
2 DMY – Not used
3 ~ 5 KO10 ~ 12 Out Not used
6 ~ 14 KO1 ~ 9 Out Key scan signal
15 KI8 In Not used
16 ~ 22 KI1~7 In Key input signal
23 , 25 TRANS, DUMMY – Not used
24 DUFON Out Power supply control for ROM
26 IT2 In Battery switch position sensor
27 IT0 In Reception data input
28 AO17 Out Not used
29 ~ 45 A0 ~ A16 Out Address bus
46 OEB0 Out Output enable signal for RAM and ROM
47 WEB0 Out Write enable signal for RAM
48 ~ 52 – Not used
53 CS7B0 Out Chip enable signal for RAM
54 CS6 Out Chip enable signal for ROM
55, 56 Out Not used
57 ~ 64 IO0 ~ IO7 In/Out Data bus
65 ~ 73 – Not used
74 PORT7 – Battery switch on: "L" / 0[V]
off: "H" / 5[V]
— 4 —
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