Casio DR-120LB Manual de usuario
R
DR-120LB(ZX-517C)
DL-200L(ZX-517A)
DL-210L(ZX-517B)
DR-320B(ZX-517D)
JULY 1996
(without price)
DR-120LB DR-320B
CONTENTS
1. SPECIFICATIONS......................................................................................................... 1
2. BLOCK DIAGRAM ........................................................................................................ 1
3. CPU (MN15418YCY) PIN FUNCTION ...........................................................................2
4. DIAGNOSTIC ................................................................................................................ 3
5. TROUBLESHOOTING .................................................................................................. 4
6. DISASSEMBLY VIEW................................................................................................... 5
7. SCHEMATIC DIAGRAMS ............................................................................................. 6
8. PARTS LIST ................................................................................................................ 10
— 1 —
1. SPECIFICATIONS
Functions: 4 basic arithmetic operations (+, –, ×, ÷), constants for ×/÷, sub-total/
total/grand total, item counting, ADD mode calculations, repeat calcu-
lations, memory calculation, percentage calculations and various
kinds of practical calculations.
Decimal point: Full floating, and fixed (0, 1, 2, 3, 4, or 6) with round off, round-up cut-
off.
Capacity: 12 digits
Ambient temperature range: 0 °C ~ 40 °C (32 °F ~ 104 °F)
Power supply: (AC 120 V, 100/120 V, 230/240 V)
Rated current and voltage are printed on the calculator.
Dimensions: 75.1 (H) ×212 (W) ×358 (D) mm
(3" H ×8 3/8" W ×14 1/8" D) including roll-holder
Weight: 1.5 kg (3.3 lbs)
Consumable supplies: Printer ribbon (RB-02 or GB-02)
Roll papaer (Width 58 × 60 ø mm)
The AC outlet must be located near the unit and must be easily accessible.
2. BLOCK DIAGRAM
Display tube
13-BT-144G
CPU
MN158418YCY
Power supply
circuit
Slide switch
Keyboard
Printer
M-80
VF1 (5.9 V, 100 mA), VF2 (2.0 V, 100 mA)
Ribbon shift signal
Character selective signal
Timing pulse
Digital signal
D1~D13
Motor control signal
VDD (32 V, 30 mA)
VSS (27 V, 30 mA)
Sent signal
S1~S7, SAP, SDP
SO1~SO7
SI1~SI3, SI5
KO1 ~ KO8
KI1 ~ KI6 VM (11 V, 200 mA)
VDD
— 2 —
3. CPU (MN158418YCY) PIN FUNCTION
Pin No. Signal I/O Function
1 ~ 7, 64 P00 ~ P13 Out Common signal for keyboard
8 ~ 12 P20 ~ P22, P32, P33 In Key signal from keyboard
13 IRQ In Timing pulse signal from printer
14 DEBIN In Reset pulse (Not used)
15 IRQCNT In Auxiliary timing (VDD)
16 P40 Out Motor control signal
17 P41 Out Ribbon shift signal for printer
18 ~ 30 P42, P43, P50 ~ P53, Out Character selective signal for printer
P70 ~ P73, P80 ~ P82
31, 32 P83, P90 Out Segment signal for display,
Character selective signal for printer
33 ~ 39 P91 ~ P93 Out Common signal for slide switch,
PA0 ~ PA3 Segment signal for display
40 P60 In Input port (VDD)
41 ~ 43 P61 ~ P63 In Signal from slide switch
44 ~ 56 PB0 ~ PB3, Out Digit signal for display
PC0 ~ PC3,
PD0 ~ PD3,
PE0
57 VPP In GND terminal
58 VDD In VDD terminal (+32 V)
59, 60 OSC1, OSC2 I/O Clock signal for CPU
61 VSS In VSS terminal (+27 V)
62 SYNC — Not used
63 RST In Signal from slide switch, Reset signal
— 3 —
STEP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
PRINT
Paper feeding
NOTE
The character with "[ ]"
will be printed by red
ink.
Press the button 3
seconds continuously.
MODE SWITCHES
ON F 6
ON F 6
ON F 6
ON F 6
PRINT F 6
PRINT F 6
PRINT F 6
PRINT CUT 6
PRINT UP 4
PRINT UP 3
PRINT UP 2
PRINT 5/4 1
PRINT 5/4 0
PRINT 5/4 ADD×
PRINT 5/4 ADD×
PRINT 5/4 ADD×
PRINT 5/4 ADD+
PRINT 5/4 ADD+
ITEM+ 5/4 ADD+
ITEM+/– 5/4 ADD+
ITEM+/– 5/4 ADD+
ITEM+/– 5/4 ADD+
OFF
4. DIAGNOSTICS
OPERATION
1 0 00
C
8 – ÷9 % ◊/#
CA
1 2 3 4 ÷
7 6 5 +
M+
M+
M–
÷5 MU/MD
+
+
M◊
M❊
CA 1 ÷ ÷ 1 =
×1 –1 –
◊/#
◊/#
– ❊
G❊
FEED
▲
DISPLAY
1000.
0.
-888.888888888
-888.88888888
0.
1234.
1.61307189542
M 1.613071
M 1.6131
M 1.614
M 1.54
M 3.1
M 5.
1.613
1.613
K 0.01
–0.02
–0.02
–0.02
–0.03
–0.03
NO Display
— 4 —
1) Does not work
at all.
2) No display.
3) No print.
4) Poor display.
5) Poor printing
• Motor does
not stop.
• Missing of
digits. • Refer to the printer service manual published separately.
VDD, VSS, VM, VF1, and
VF2 are OK?
Check the pulse signals
from LSI.
If VF1, VF2, Digit and
Segment signals are OK.
VM=11V±5%(whileprint-
ing)
Check detector of printer
block and timing signal.
Secondary voltage
of transformer
Waveforms of each
pin
VF1, VF2
Signal D1 ~
S1 ~
Between LSI and
display tube
Trouble Cause Checkpoint Note
5. TROUBLESHOOTING
• Defective power transformer
• Defective LSI
• No voltage at VF1, VF2
• No digit signal or no segment
signal
• Defective display tube
• Poor voltage VM
• Defective motor
• Defective LSI
•Short or open circuits between
digit signals and segment sig-
nals.
• Defective display tube
• Timing signal is bad.
• Defective printer magnet
— 5 —
9
8
10
11
20
6
16
15
19
18
17
13
14
12
4
1
2
3
5
7
6. DISASSEMBLY VIEW
— 6 —
7. SCHEMATIC DIAGRAMS
7-1. Main PCB
POWER CORD
286S0255-1 (USA, CANADA)
EP-483-E03 (EUROPE, SAUDI)
SP-852-J03 (AUSTRALIA)
SE-225-1D1U (USA, 120 V)
SE-225-1D1J (JAPAN, CANADA, 100/120 V)
SE-225-1D2 (EUROPE, 230/240 V)
TR
— 7 —
7-2. Keyboard PCB
— 8 —
7-3. Slide Switch Board PCB
Este manual sirve para los siguientes modelos
7
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