Casio DR-120LB, DL-200L, DL-210L, DR-320B Service Manual

(without price)

DR-120LB (ZX-517C)

DL-200L (ZX-517A)

DL-210L (ZX-517B)

DR-320B (ZX-517D)

JULY 1996

DR-120LB		DR-320B

R

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. 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		VF1 (5.9 V, 100 mA), VF2 (2.0 V, 100 mA)
	13-BT-144G
	Sent signal	Digital signal
	S1~S7, SAP, SDP	D1~D13
	SO1~SO7
Slide switch
	SI1~SI3, SI5
			Ribbon shift signal
	CPU		Character selective signal	Printer
			Timing pulse
	MN158418YCY			M-80
	KO1 ~ KO8
	Motor control signal
Keyboard			VM (11 V, 200 mA)
	KI1 ~ KI6		VDD
	VDD (32 V, 30 mA)
	VSS (27 V, 30 mA)
	Power supply
	circuit
	— 1 —

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

— 2 —

4. DIAGNOSTICS

STEP

MODE SWITCHES

OPERATION

DISPLAY

PRINT

NOTE

1

ON

F

6

1

0

00

1000.

2

ON

F

6

C

0.

3

ON

F

6

8 –

¸

9

%

à/#

-888.888888888

The character with "[ ]"

4

ON

F

6

▲

-888.88888888

will be printed by red

5

PRINT

F

6

0.

ink.

CA

6

PRINT

F

6

1

2

3

4

¸

1234.

7

PRINT

F

6

7

6

5

+

1.61307189542

8

PRINT

CUT

6

M

1.613071

M+

9

PRINT

UP

4

M

1.6131

M+

10

PRINT

UP

3

M

1.614

M–

11

PRINT

UP

2

¸

5

M

1.54

MU/MD

12

PRINT

5/4

1

+

M

3.1

13

PRINT

5/4

0

+

M

5.

14

PRINT

5/4

ADD´

1.613

Mà

15

PRINT

5/4

ADD´

1.613

M

16

PRINT

5/4

ADD´

CA

1

¸

¸

1

=

K

0.01

17

PRINT

5/4

ADD+

´

1

–

1

–

–0.02

18

PRINT

5/4

ADD+

–0.02

à/#

19

ITEM+

5/4

ADD+

–0.02

à/#

20

ITEM+/–

5/4

ADD+

–

–0.03

21

ITEM+/–

5/4

ADD+

–0.03

G

22

ITEM+/–

5/4

ADD+

Paper feeding

Press the button 3

FEED

seconds continuously.

23

OFF

NO Display

— 3 —