Casio JD4000, C-210 Service Manual

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JD-4000(ZX-805B, D)

C-210(ZX-805C)

FEB. 1995

JD-4000

C-210

INDEX

CONTENTS

1.	SCHEMATIC DIAGRAM................................................................................................	1
2.	SPECIFICATIONS .........................................................................................................	3
3.	GENERAL GUIDE .........................................................................................................	6
4.	RESET OPERATIONS ..................................................................................................	9
5.	BATTERY REPLACEMENT ........................................................................................	11
6.	ERROR MESSAGE .....................................................................................................	13
7.	LSI PIN FUNCTION .....................................................................................................	14
8.	OPERATION CHECK ..................................................................................................	16
9.	TO SAVE THE DATA TO ANOTHER MACHINE ........................................................	17
10.	TROUBLESHOOTING .................................................................................................	20
11.	EXPLODED VIEW .......................................................................................................	23
12.	PARTS LIST ................................................................................................................	25

1. SCHEMATIC DIAGRAM

NOTES:

1. DP1, DP2, and DP3 are the checking points for the power supply.

2. CP50, CP51, CP52, and DP1 are the terminals for the data transfer.

3. The other terminals marked with may be used to function checking.

4. R50 and R51 are not used.

— 1 —

2. SPECIFICATIONS

Telephone Directory Mode

Storage and recall of telephone directory data (name, telephone number, portrait). Includes secret memory area and auto sort function.

Schedule Mode

Storage and recall of appointments (month/date/hour/minute, description). Includes secret memory area and auto sort function.

Data Memo Mode

Storage and recall of memos (memo name, memo). Includes secret memory area and auto sort function.

Timekeeping Mode

Average of accuracy ±3 seconds per day under normal temperatures: year/month/date, hour/minute/ second, AM/PM, day of the week, full automatic calendar, 12/24 hour timekeeping format

Alarm Mode

Daily Alarm (20-second electronic buzzer); Hourly Time Signal (beeps every hour on the hour)

Fortune Telling Mode

Fortune telling on any date from January 1, 1901 to December 31, 2099.

Match Maker Mode

Compatibility of any two people whose birthdays are from January 1, 1901 to December 31, 2099.

Triple Play Mode

Calculator Mode

10-digit arithmetic calculations; constant calculations; memory calculations; 20-digit approximations; percentage calculations; square roots; sign changes; function command signs

Other functions

Contrast adjustment

— 3 —

General
Display:	Liquid crystal display
Memory Capacity:	4,096 bytes
Power Supply:	Main batteries – One lithium battery (CR2032)
	Back-up battery – One lithium battery (CR2032)
Power Consumption:	0.03 W
Battery Life*:	Main batteries –
	• approximately 400 hours continuous operation
	• approximately 1 year (1 hour use per day)
	Back-up battery – approximately 5 years after the low main battery
	warning appears on the display
	* The batteries which have been installed in this unit when you purchase it
	are for the factory test, so that it will not be possible to satisfy the above
	specifications when these batteries are used.

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) × 146 (W) × 162.5 (D) mm (3/8" (H) × 5 3/4" (W) × 6 3/8" (D))

Closed: 14.9 (H) × 146 (W) × 84.5 (D) mm (5/8" (H) × 5 3/4 " (W) × 3 3/8" (D))

Weight:	138.2 g (4.9 oz) including batteries
Current consumption

		Check point	TYP [μA]	Max [μA]

	OFF	CP1 - CP3	—	8.5

	ON (Menu)	CP1 - CP3	185	220

	ON (Buzzer)	CP1 - CP3	—	5000

How memory capacity is calculated

There is no limit on the amount of memory you can use in each mode, but the limit on the total amount of data stored is 4,096 bytes. The following shows how many bytes the data in each mode takes up. One character takes up one byte.

— 4 —

Mode	Bytes per Data Item

Telephone Directory	(name) + (telephone number) + 15

Schedule	(description) + 12

Data Memo	(memo name) + (memo contents) + 3

Examples:

Telephone Directory data only

When all items use 10 characters for the name and 12 characters for the phone number, you can store approximately 110 items.

Schedule data only

When all items use 20 characters, you can store approximately 120 items.

Data Memo data only

When all items use 10 characters for the memo name and 10 characters for the memo content, you can store approximately 170 items.

Sort Sequence

The following table shows the sequence used for sorting data in the Telephone Directory and the Data Memo Modes.

1	§	30	8	59	V	88	t	117	Ì	146	"	175	n
											o
2	→	31	9	60	W	89	u	118	Ò	147	Â	176	r
3	←	32	:	61	X	90	v	119	Ù	148	Ê	177	s
4	÷	33	;	62	Y	91	w	120	Ç	149	Î	178	t'
5	×	34	<	63	Z	92	x	121	L	150	Ô	179	A
6	Space	35	>	64	„	93	y	122	.	151	Û	180	E
									Z
													`
7	!	36	?	65	¥	94	z	123	à	152	Å	181	´
													C
8	”	37	@	66	“	95	<	124	è	153	.	182	´
											U		N
9	#	38	A	67	¡	96	£	125	ì	154	"	183	´
											U		S
10	$	39	B	68	¿	97	>	126	ò	155	â	184	´
													Y
11	%	40	C	69	a	98	~	127	ù	156	ê	185	´
													Z
12	&	41	D	70	b	99	Á	128	ç	157	î	186	Z
13	’	42	E	71	c	100	É	129	l	158	ô	187	a
14	(	43	F	72	d	101	Í	130	.	159	û	188	`
									z				e
15	)	44	G	73	e	102	Ó	131	Ä	160	å	189	`
													c´
16		45	H	74	f	103	Ú	132	Ë	161	.	190	n´
											u
17	+	46	I	75	g	104	Ã	133	Ï	162	u"	191	s´
18	,	47	J	76	h	105	Õ	134	Ö	163	A	192	y´
19	–	48	K	77	i	106	Ñ	135	Ü	164	E	193	z´
20	•	49	L	78	j	107	á	136	Æ	165	C	194	z
21	/	50	M	79	k	108	é	137	Œ	166	D	195	Ø
22	0	51	N	80	l	109	í	138	"	167	N	196	ø
									O
23	1	52	O	81	m	110	ó	139	ä	168	R	197	ß
24	2	53	P	82	n	111	ú	140	ë	169	S
25	3	54	Q	83	o	112	ã	141	ï	170	T
26	4	55	R	84	p	113	õ	142	ö	171	a
27	5	56	S	85	q	114	ñ	143	ü	172	e
28	6	57	T	86	r	115	À	144	æ	173	c
29	7	58	U	87	s	116	È	145	œ	174	d'

— 5 —

3. GENERAL GUIDE

Very important stuff! Here's where we tell you how not to lose important data stored in memory. Also, be sure to perform the all-reset operation before using the JD-4000/C-210 for the first time. The allreset operation is described in section 4.

Please be sure you understand the following before using the JD-4000/C-210.

Make back-up copies of important data!

The electronic memory in the JD-4000/C-210 store and recall information quickly and easily. But that information is retained only as long as power is supplied by the batteries. Should the batteries go dead, or should you remove both batteries at the same time, data stored in memory can be lost entirely. Data can also be corrupted or lost due to a strong electrostatic charge, strong impact, or extremes in temperature and humidity. All of this means that you should always keep written back-up copies of important data.

General Precautions

Warning!

•Never expose the unit or batteries to direct heat or flame.

•Avoid use or storage in very low temperatures. This may cause display response to slow down or fail entirely. Very low temperatures can also shorten battery life.

•Avoid use or storage in very high temperatures. Even prolonged exposure to direct sunlight can damage the unit. Leaving it on the dashboard of a closed car, or on a heater, is even worse.

•Avoid using or storing the unit where there is high humidity or a lot of dust. Never allow liquids to come into contact with the unit.

•Avoid dropping the unit or otherwise subjecting it to strong impact.

•Never bend or twist the unit. Carrying it in your back pocket, for instance, can subject the JD- 4000/C-210 to abnormal bending and twisting.

•Never try to take the unit apart.

•Do not press the unit's keys with a pen, pencil, or other sharp object.

•To clean the JD-4000/C-210, wipe it with a soft cloth. When necessary, you may wipe the exterior with a soft cloth that has been dipped in a weak solution of a mild, neutral detergent and water.

•Never use strong liquid cleaners such as lacquer thinner or benzine to clean the unit.

•In no event will CASIO or its suppliers be liable to you or any other person for any damages, including any incidental or consequential expenses, lost profits, lost savings, or any other damages arising out of the use of this product.

MENU Key

EDIT Key

SYMBOL Key

Display

CODE Key

Clear Key

AC/ON Key

SHIFT Key

SERCH and CONTRAST Key

Cursor Keys

OFF Key

EXE Key

SPACE/Return Key

— 6 —

Displaying the Main Menues

There is a total of three icon menues which are named by MENU 1, MENU 2, and MENU 3. An icon menu will appear on the display once the switch is turned on, and the other icon menues can be selected by using the MENU key.

3	4	7	8
		1 Telephone Directory Mode	6 Match Maker Mode
		2 Secret Memory Area	7 Timekeeping Mode
		3 Schedule Mode	8 Alarm Mode
		4 Data Memo Mode	9 Calculator Mode
		5 Fortune Telling Mode	0 Triple Play Mode