Casio DR-120LB User manual

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

— 9 —
M
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Character selective
magnet column No.1
Ribbon shift magnet
Electromagnet (+)
Motor power
supply (+)
Detector power
supply (+)
Timing signal
Detector power
supply (–)
Motor power
supply (–)
RD terminal
(Not used)
Character selective
magnet column No.1
Electromagnet (+) Driver
(Example of compatible diode:
1S2075K or equivalent)
Connection Pin No. ConnectionPin No.
Motor power ON/OFF
Character selective magnet No.n
Ribbon shift magnet
Timing signal
(Print operation)
(Normal paper feeding operation)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12
8
0.7ms max.0.7ms max. 80.0ms min.
0.7ms max.0.7ms max.
8.0ms min. 2.0ms min.
TS T(0)
0.2ms max.
Typ. 285.7ms
*2
*1
7-4. Printer Pin Arrangement Diagram
Notes:
1. Column numbers match
the physical arrange-
ment of the columns on
the print wheels.
2. Column numbersare as-
signed from 1 to 18 from
the frame motor side.
3. Pin numbers are as-
signed from 1 to 27 from
the frame motor side.
4. The spark arrestor diode
is connected as shown
below.
Notes:
1. The signals in must be prepared by the user.
2. The pulse is indicated by a dot-dash line (*1) is generated for continuous printing. The next print cycle can start
immediately after the leading edge of the timing signal Ts.
3. As shown by a dashed line (*2), the timing signal may go low at motor power-on or upon reception of a Print command.

8. PARTS LIST
N Item Code No. Parts Name Specification Q R
ABCD
LSI 2012 1295 LSI MN158418YCY 1111B
IC1, 2 2114 2436 Monolithic IC(Buffer) BA12003 2222B
Q1 2251 0525 Transistor 2SB1329-Q,R 1111B
Q2 2253 0469 Transistor 2SD1380-Q,R (ROHM) 1111B
Q3, 4 2252 0896 Transistor 2SC1740S-R,S 2222B
Q5 2250 0672 Transistor 2SA933S-R,S 1111B
Q6 2251 0581 Transistor 2SB1374-Q,R 1111B
Q7, 8 2259 1449 Digital transistor DTD114ES 2222B
D1~5 2390 0378 Diode 1SR139-100T-32-T 5555C
D6~8 2360 1946 Zener diode MTZJ5.6CT-77-T 3333C
D9~11 2301 0054 Diode 1S2472-T-77-T 3333C
D13, 14 2301 0101 Diode 1S2473-T-77-T 2222C
DIG1 3301 0217 Display tube 13-BT-144G 1111A
The following elecrical parts will be not supplied from CASIO.
C1 2845 3241 Semiconductive capacitor DD308-959F104Z50 1111
C2 2803 9198 Electrolytic capacitor RE2-50V331M-T2 1111
C3 2803 8199 Electrolytic capacitor RE2-25V222M-T50 1111
C4 2813 3178 Semiconductive capacitor DD003-298B102K50 1111
C5 2803 9197 Electrolytic capacitor RE2-16V100MA-T2 1111
C6 2845 2170 Semiconductive capacitor DD308-959F224Z12 1111
C7, C8 2813 3038 Semiconductive capacitor DD003-298SL101J50 2222
R1 2606 1351 Carbon film resistor R-50X-6.8K-J-T24-T (6.8 Kohm, 1/2 W, ±5%)1111
R2 2606 2297 Carbon film resistor R-50X-5.6k-J-T24-T (5.6 K, 1/2 W, ±5%) 1111
R5 2614 0323 Carbon film resistor R-25-3.3K-J-T24-T (3.3 Kohm, 1/4 W, ±5%) 1111
R6 2614 0048 Carbon film resistor R-25-15K-J-T24-T (3.3 Kohm, 1/4 W, ±5%) 1111
R7 2614 0234 Carbon film resistor R-25-1K-J-T24-T (1 Kohm, 1/4 W, ±5%) 1111
R8 2614 0561 Carbon film resistor R-25-3.9K-J-T24-T (3.9 K-2) 1111
R9 2614 0579 Carbon film resistor R-25-470-J-T24-T (470 ohm, 1/4 W, ±5%) 1111
R10 2614 0471 Carbon film resistor R-25-270-J-T24-T (270 ohm, 1/4 W, ±5%) 1111
R11 2614 0188 Carbon film resistor R-25-390-J-T24-T (390 ohm, 1/4 W, ±5%) 1111
R12 2614 0749 Carbon film resistor R-25-5.1K-J-T24-T (5.1 K-2) 1111
R13 2621 6397 Carbon film resistor R-50X-22-J-T24-T (22 ohm, 1/2 W, ±5%) 1111
R14 2606 1344 Carbon film resistor R-25-6.8K-G-T24-T (6.8 K, 1/2 W, ±5%) 1111
R15 2614 1311 Carbon film resistor R-25-200-J-T24-T (200 ohm, 1/4 W, ±5%) 1111
R17~R20 2775 3264 Metal film resistor RSMF1B220J (100 ohm, 1 W, ±5%) 4444
COMPONENTS
N 1 6419 4320 PC joiner B-V298 HA310361-2 1111C
N 2 1014 9622 DIGITAL PRINTER M-80-021 1111A
N 3 6419 4130 UPPER CASE-Z517A HA110103-1 1000X
N 3 6419 4140 UPPER CASE-Z517B HA110103-2 0100X
N 3 6419 4150 UPPER CASE-Z517C HA110103-3 0010X
N 3 6419 4310 UPPER CASE-Z517D HA110103-4 0001X
N 4 6419 4160 LOWER CASE-Z517A HA110104-1 1000X
N 4 6419 4170 LOWER CASE-Z517B HA110104-2 0100X
N 4 6419 4180 LOWER CASE-Z517C HA110104-3 0011X
N 5 6419 4660 PRINTER COVER-Z517A HA110106-1 1000C
N 5 6419 4670 PRINTER COVER-Z517B HA110106-2 0111C
N 6 6419 4200 PAPER CUTTER-Z517 HA210052-1 1111C
N 7 6419 4190 SLIDE SWITCH-Z517 HA210051-1 3333X
N 8 6419 4220 KEY A-Z517 HA110107-1 1111C
Notes: N – New parts A: DR-120LB
Q – Quantity used per unit B: DR-320B
R – Rank C: DL-210L
D: DL-200L
— 10 —

N Item Code No. Parts Name Specification Q R
ABCD
N 9 6419 3040 KEY B-Z517 HA310265-1 1111C
N 10 6419 3050 KEY C-Z517 HA310266-1 1111X
N 11 6419 3020 DISPLAY PLATE-Z517A HA1101105-1 1111X
N 12 6419 4240 C FILM-517 HA310352-1 1111X
N 13 6419 4250 SW SPACER-Z517 HA310351-1 1111C
14 6329 8310 CONTACT PLATE-G310 A45208-1 6666C
15 3012 1337 TRANSFORMER SE-225-1D1U (or T03411C) 1100B
15 3012 1316 TRANSFORMER SE-225-1D1J (or T03410D) 1010B
15 3012 1323 TRANSFORMER SE-225-1D2 (or T03412A) 0011B
N 16 3701 1114 POWER CORD 286S0255-1 1110C
N 16 3701 1106 POWER CORD EP-483-E04 0011C
N 16 3701 1115 POWER CORD SP-852-J03 0010C
N 17 6419 3030 RUBBER KEY-Z517 HA210062-1 1111C
N 18 4321 2280 PCB-Z517-2 HA210060-1 0111X
N 19 6419 4290 PC JOINER A-Z517 HA310361-1 1111X
OTHERS
20 6416 8960 Roll arm R-L227B P340017-2 1000A
20 6416 8970 Roll arm L- L227B P340024-2 1000A
N 20 6419 5000 Roll arm R-L227A P340017-1 0111A
N 20 6419 5010 Roll arm L- L227A P340024-1 0111A
The Parts prices will be informed separately by Parts Price List.
Notes: N – New parts A: DR-120LB
Q – Quantity used per unit B: DR-320B
R – Rank C: DL-210L
D: DL-200L
— 11 —

MA0900461A