CASIO CE3700, CE-3750 Service Manual

SERVICE MANUAL

(without price)

ELECTRONIC CASH REGISTER

CE-3700 CE-3750

DEC, 1994

(EX-278)

(EX-279)

INDEX

	CONTENTS
		Page
1.	SPECIFICATION ..........................................................................................	1
2.	OPTION SPECIFICATIONS .........................................................................	3
3.	INSTALLATION ...........................................................................................	3
4.	INITIALIZE....................................................................................................	4
5.	MAJOR COMPONENT ................................................................................	6
6.	BLOCK DIAGRAM .......................................................................................	7
7.	CIRCUIT EXPLANATIONS ..........................................................................	8
8.	DISASSEMBLY / ASSEMBLY METHOD ..................................................	12
9.	DIAGNOSTIC OPERATION .......................................................................	13
10.	PROGRAMMING THE CE-3700 SERIES CASH REGISTERS .................	17
11.	OPERATION ..............................................................................................	19
12.	ERROR CODES .........................................................................................	20
13.	IC DATA .....................................................................................................	21
14.	PCB LAYOUT ............................................................................................	22
15.	CIRCUIT DIAGRAM ...................................................................................	23
16.	PARTS LIST ...............................................................................................	33

Product introduction

This machine CE-3700(EX-278) is a succession machine for CE-3400(EX-253). The simultaneous boot model is EX-279.

EX-278: The drawer not separation type. EX-279: The drawer separation type.

The Rom/Ram is the internal organs.

1. SPECIFICATION

1-1.	Product
	Operating temperature:	0 °C	~	40 °C
	Operation air moisture:	10 %	~	90 %
	Storage temperature:	-25 °C	~	65 °C
	Storage air moisture:	10 %	~	95 %
	Bombardment strength:	To add bombardment from 10 high cm by single support, and there
		isn’t the problem.
1-2.	Package status
	Storage temperature:	-25 °C	~	65 °C
	Storage air moisture:	10 %	~	95 %
	Vibration strength:	1.5 G
	Bombardment strength:	To add bombardment from 60 high cm by single support, and there
		isn’t the problem.
1-3.	Accessory specifications
	Roll paper:	P-4575 (EX-P-4574), 45 X 12 X 30 D
	Stamp logotype:	CSP-2030ASA-2
	Ink for supplement:	Super Ink KC
	Ink roll:	IR-92 (EX-INK-IR-92-OP)
	Dust cover:	Only 1 part neighborhood
1-4.	Printer
	CR-812A-009-14-001A:	Europe
	CR-812A-009-15-001A:	USA, Canada, UK, Europe
	Printing type:	ring select mode
	Output sheet number:	2
	Chart specifications
	Paper width:			44.5 ± 0.5 mm
	Maximum paper diameter:			Ø 83 mm
	Maximum paper thickness:			0.06 ~ 0.085 mm
	Materials:			Regular paper
	Inking:	Ink roll
	Validation
	Print specifications:			Yes
	Sensor:			No
	Paper cut:	Manual
	Stamp
	Color:			Purple
	Seal side dimension:			30 mm (W) X 20 mm (H)

— 1 —

1-5. The durability specifications

Switch

Key board switch:

5,000,000 times

Control lock:

20,000 times

Operation key

100,000 times

Feed switch

5,000,000 times

Receipt on/off switch

10,000 times

Reset switch

100,000 times

Drawer:

1,000,000 times

Printer

MCBF:

2,000,000 line

Ink roll

400,000 line

Stamp

Ink:

50,000 times

mechanism:

500,000 times

1-6.

Electric specifications

Power consumption

Area

120 V

220 V

230V

240V

In action

Max.

0.40 A

0.20 A

0.20 A

0.20 A

In holding

Min.

0.09 A

0.05 A

0.05 A

0.05 A

Power off

0.08 A

0.04 A

0.04 A

0.04 A

1-7.

Memory Protection

Protection battery:

Vanadium Lithium secondary battery

Model: VL3032/IF2

Guard period:

90 days (25 °C) In perfection charge status

Galvanic cell life expectancy:

5 years

Recharge time:

48 hours in secondary battery

CAUTION

Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer.

Dispose of used batteries according to the manufacture’s instructions.

1-8. Clock, date facility
Clock precision:	Less than ±30 seconds (25 °C)
	Automatic calendar:	Until 2099
1-9. Electric power supply for an emergency (B-6)
Operating hour:	3 hours
Driving condition
Processing time per customer one person:		60 sec./ person
Purchase item number:		10 item / person
1 item registration amount of money number of digits: 4 digits / item
The handling number of people for 1 hour:		30 person /hour
Recharge time:	8 hours

— 2 —

2. OPTION SPECIFICATIONS

2-1.	Ink roll:			IR-92
2-2.	Waterproofing cover:			WT-70
2-3.	Roll paper:			P-4575 (45×12×75D)
2-4. Electric power supply for an emergency: B-6
	The parts for adding B-6 are not equipped. They should be ordered separately from service department.
	The following parts are necessary to add B-6.
		No.	Code No.	Parts Name	Specification	Q'ty
		Q1	2200 3577	Transistor	2SA1015(GR,O,Y)	1
		ZD1	2310 8879	Zener diode	RD18EB1	1
		D6,D7	2301 0011	Diode	1S2471	2
		C5	2804 5476	Electrolytic capacitor	50RE47	1
		R2,R3,R5	2600 7313	Carbon film resistor	R-25-10K-J	3
		R1	2600 5612	Carbon film resistor	R-25-2K-J	1
			6221 4218	Connector sub assembly	E311294-1(#22)	1
2-5.	Keyboard Conversion Kit:			CVK-S2/-L2/-LLL2/-FS2
2-6.	Ink for supplement			Super ink K

3. INSTALLATION

Connection is done of earth-line of drawer and main frame like lower chart.

— 3 —

4. INITIALIZE

By Initialize code

Init. A: The format is done of EEPROM, and, without it is read, and Init. Code is written in. Init. B: The data is read from EEPROM.

4-1. MAC

To hang initial start-up of CPU and peripheral device, and All Clear makes memory.

When there is Data backed up by EEPROM, by Initialize code, to develop it on Memory top.

Operation

Display

Printing

Power off

To continued pushing J-feed button, and To set the MODE switch to Program.

To release from the

J-feed button.

D1 ~ D5

#-2

Header printing

0000000000

	D1D2D3D4D5	XXXX: Rom Control No.
		-- XXXX --
		D1D2D3D4D5
		---------------
P1	0

Input value D1 ~ D5

D1 0: YYMMDD

1:MMDDYY

2:DDMMYY

D2	1:	General	(Add2, DDMMYY)
	2:	US	(Add2, MMDDYY)
	3:	General	(Add3, DDMMYY)
	5:	Canada	(Add2, MMDDYY)
D3,D4	Department No.		General	15
				US 30
D5	Clerk specification		Switch:		1,2,4
			Password No.:		0	(U.S.A. & Canada)

Note: Operation code with Init.B is set up as with settlement in “00000”

— 4 —

4-2. Auto or Reset switch initialize
		Operation			Display
					0000000000
	To push Reset SW.
		or
	Power on In Low batt.
					D1D2D3D4D5
		D1 ~ D5

#-2

P1

0

Input value D1 ~ D5

D1 0: YYMMDD

1:MMDDYY

2:DDMMYY

D2	1:	General	(Add2, DDMMYY)
	2:	US	(Add2, MMDDYY)
	3:	General	(Add3, DDMMYY)
	5:	Canada	(Add2, MMDDYY)

D3,D4	Department No.	General	15
		US	30
D5	Clerk specification	Switch:
		Password No.:

Printing

XXXX:Rom Control No.

--XXXX --

D1D2D3D4D5

---------------

1,2,4

0 (U.S.A. & Canada)

Note:

Operation code with Init.B is set up as with settlement in “00000”.

4-3. Flag clear

To do Initialization of work memory, and make the operation sequence with the latest status.

Operation

Display

Printing

Power off

To continued pushing R-feed button, and To set the MODE switch to Program.

To release from the

J-feed button.

#-2

Header printing

			XXXX: Rom Control No.
			-- XXXX --
FFFFFFFFF			D1D2D3D4D5
			P1P2P3P4P5P6P7P8
			X1X2X3X4
			M1M2-D1D2-Y1Y2
			---------------
			Password for P1~P8
			Password for X1~X4:
			X2/Z2
P1	0		M1M2D1D2Y1Y2

— 5 —

5. MAJOR COMPONENT

		CPU				UPD78044AGF080-3B9
		Ram				LC36256PLL
						256K bit	SRam
		Printer		Model		CR812A-009-15-001A
				MCBF		2,000,000 lines
		Drawer		USA		DL-2416	D-15TC-A55SP-1*
				Canada		DL-2351	D-15TC-A54SP-1*
				UK		DL-2751	D-15TC-A84SP-1*
				Other Countries		DL-2350	D-15TC-A54P-1*
						DL-2750	D-15TC-A84P-1*
				Germany		DL-2752	D-15BC-A84S-1*
CPU Pin Description
Pin	Port	Name		In/	Description		Pin	Port	Name	In/	Description
No.	No.			Out			No.	No.		Out
1	94	FIP6		O	Display Digit Signal (Dg7)		41	32	TO2	O	Receipt Common Signal
2	93	FIP5		O	Display Digit Signal (Dg6)		42	31	TO1	O	Auto cutter
3	92	FIP4		O	Display Digit Signal (Dg5)		43	30	TO0	O	Stamp
4	91	FIP3		O	Display Digit Signal (Dg4)		44	3	INTP3	I	Drawer sensor
5	90	FIP2		O	Display Digit Signal (Dg3)		45	2	INTP2	I	Key scan timing plus
6	81	FIP1		O	Display Digit Signal (Dg2)		46	1	INTP1	I	Power Down
7	80	FIP0		O	Display Digit Signal (Dg1)		47	0	INTP0	I	Printer
8					Power (VDD)		48				Gnd for Vpp (IC)
9	27	SCK0		I/O	Data 7		49	70		O	Address decoder (A12/D0)
10	26	SO1		I/O	Data 6		50	71		O	A13/Decod1
11	25	SI0		I/O	Data 5		51	72		O	A14/Decod1
12	24	BUSY		I/O	Data 4		52				Power (VDD)
13	23	STB		I/O	Data 3		53	127	FIP33	O	Printer Head (HD8)
14	22	SCK1		I/O	Data 2		54	126	FIP32	O	Printer Head (HD7)
15	21	SO1		I/O	Data 1		55	125	FIP31	O	Printer Head (HD6)
16	20	SI1		I/O	Data 0		56	124	FIP30	O	Printer Head (HD5)
17					Reset Signal		57	123	FIP29	O	Printer Head (HD4)
18	74			O	CE(Ram Chip Enable)		58	122	FIP28	O	Printer Head (HD3)
19	73			O	R/W(Ram Write Enable)		59	121	FIP27	O	Printer Head (HD2)
					Analog electric potential of AD
20					converter (Gnd)		60	120	FIP26	O	Printer Head (HD1)
21	17	ANI7		I	Key Input Signal (KI7)		61	117	FIP25	O	Printer Head (HD10)
22	16	ANI6		I	Key Input Signal (KI6)		62	116	FIP24	O	Printer Head (HD9)
23	15	ANI5		I	Key Input Signal (KI5)		63	115	FIP23	O	Printer J-feed
24	14	ANI4		I	Key Input Signal (KI4)		64	114	FIP22	O	Printer R-feed
25	13	ANI3		I	Key Input Signal (KI3)		65	113	FIP21	O	Printer Motor
26	12	ANI2		I	Key Input Signal (KI2)		66	112	FIP20	O	Key Common Signal (KC9)
											Display Digit Signal / Key
27	11	ANI1		I	Key Input Signal (KI1)		67	111	FIP19	O	Common Signal (SGdb/KC8)
											Display Digit Signal / Key
28	10	ANI0		I	Key Input Signal (KI0)		68	110	FIP18	O	Common Signal (SGtr/KC7)
					Analog electric power supply of						Display Digit Signal / Key
29					AD converter (Vcc)		69	107	FIP17	O	Common Signal (SGg/KC6)
					Reference voltage input of AD						Display Digit Signal / Key
30					converter (Gnd)		70	106	FIP16	O	Common Signal (SGf/KC5)
											Pull Down electric potential for
31					Clock Terminal		71				Fip (VN)
											Display Digit Signal / Key
32					Clock Terminal		72	105	FIP15	O	Common Signal (SGe/KC4)
					Analog electric potential of AD						Display Digit Signal / Key
33					converter(Gnd)		73	104	FIP14	O	Common Signal (SGd/KC3)
											Display Digit Signal / Key
34					System Clock 4.19MHz		74	103	FIP13	O	Common Signal (SGc/KC2)
											Display Digit Signal / Key
35					System Clock 4.19MHz		75	102	FIP12	O	Common Signal (SGb/KC1)
											Display Digit Signal / Key
36	37			O	EEPROM CE		76	101	FIP11	O	Common Signal (SGa/KC0)
37	36	BUZ		O	Buzzer		77	100	FIP10	O	Key Scan Timing Plus
38	35	PCL		O	Decoder CE		78	97	FIP9	O	Display Digit Signal (Dg10)
39	34	TI2		O	DW1&2		79	96	FIP8	O	Display Digit Signal (Dg9)
40	33	TI1		O	Journal Common Signal		80	95	FIP7	O	Display Digit Signal (Dg8)

— 6 —

6. BLOCK DIAGRAM

Standard	CPU	Option

Printer (CR812A)

Main Display (10 columns)

Pop-uo Display

(10 columns)

RAM (32K byte)

EEPROM (512 byte)

Key board

Drawer			Multi Drawer

Compulsory Drawer

(USA, Canada,Germany, UK)

Buzzer

Power Supply

Back-up battery			Battery operation
(Vanadium Lithium)			(B-6)

— 7 —

7. CIRCUIT EXPLANATIONS

7-1. Power supply circuit

1)Diodes rectification bridge

By diodes rectification bridge, alternating voltage is converted into DC voltage, and the electrical voltage is done filtering of by Capacitor C4.

2)Power supply circuit for B-6

The electrical voltage which puts in resistor 3 when line voltage includes anomaly changes, and transistor Q1 becomes on status, and CS signal is done outgoing of by this, and VP is supplied than Power supply B-6.

Note: The component for connection isn’t equipped with in plant shipping. (service arrangement)

7-2. DC/DC converter circuit

2SD721(Q2) is Power voltage control transistor, and electric power supply is supplied in DCDC converter with 2SC3303(Q3). 2SC3303(Q3) does a work as oscillator. The frequency of 2SC3303(Q3) is controlled by signal done feed back of through RD27EB1.

7-3. Electrical voltage value in check point

Vc

Vp

Vcc/Vdd

Vns

Vs

Vf

Rated output electrical voltage

Min: 23 V

20 V

5 V

32 V

27 V

4.75

V

Output voltage drift range

Max: 42 V

2 V

0.3 V

10%

10%

7%

Output voltage drift range

AC

DC

DC

DC

DC

AC

— 8 —

7-4. Reset circuit

The voltage fluctuation of VDD is controlled of IC10 (S-80727AN).

CPU is done Reset by pushing Reset Switch or drifting VDD.

S-80727AN

Vdd

2 1

3

CPU

Reset SW

17

Reset

7-5. Data communication between CPU and EEPROM IC11(BR93LC46A).

EEPROM is Rom that write / erase is possible electrically.

BR93LC46A is a nonvolatile register, and serial data of 16 bit can be memorized with 64 register.

	CPU			EEPRom
			36
	CS	1		EEPCS
		2	14
	SK			AD2
		3	15
	DI			AD1
		4	16
	DO			AD0

CS:	Chip select
SK:	Serial data clock
DI:	Serial data input
DO:	Serial data output
	64 words X 16 bits 1,024 bits

— 9 —

[ Data reading procedure ]

When the CPU read the data of EEPROM, CPU send the CS signal and SK signal to EEPROM. Then CPU send the address to EEPROM, and then EEPROM return the data to CPU.

CS
SK
DI	Address
DO	Data
	Output data here

[ Data writing procedure ]

When the CPU save the data to EEPROM, CPU sends the CS and SK signal to EEPROM. And CPU send the address and data to EEPROM from pin No. 15.

When the EEPROM writes the data, EEPROM outputs the busy signal form DO terminal to CPU. After finish writing, EEPROM outputs the ready signal from DO terminal to CPU.

Status

CS

SK

Address

Data

DI

READY(H)

DO

High Impedance

BUSY(L)

— 10 —

7-6.	Time chart
	1) RAM writing timing
			16.4 us	13.6us
	A0	WE		3.95us
	A1	CE
	A2	D0
	A3	D1
	A4	D2
	A5	D3
	A6	D4
	A7	D5
			1.4us	15.0us
	B2	A0
	B3
	B4	A1
	B5	A2
	B6	A3
	B7	A4
	B0	A6
	B1	A7
	2) RAM reading timing
	A0	WE
	A1	CE	18.3us	7.45us
	A2	D0
	A3	D1
	A4	D2
	A5	D3
	A6	D4
	A7	D5
	B2	A0
	B3
	B4	A1
	B5	A2
	B6	A3
	B7	A4
	B0	A6
	B1	A7

3) EEP-ROM Writing and reading timing

29us

A0 CS

A1 SK

A2 DI

A3 DO

— 11 —

8.DISASSEMBLY / ASSEMBLY METHOD

1)Remove the Printer cover.

2)Upper case can remove it from by 4 places screws of printer four corners. (Lower chart 1 reference)

3)It comes off while sliding of Upper case backward by raising it.

4)Key board can remove it from by 4 places screws. (Lower chart 2 reference)

— 12 —

9. DIAGNOSTIC OPERATION

9-1. Start-up method

By the next operation, EX-278 enters Test mode.

1)Mode switch off.

2)To continued pushing J-feed button.

3)To set the Mode switch to Program.

4)To release from the J-feed button.

5)To input 9 9 9 9 9 0 0 0 0 0 #2

Printing out

00-00-00

00:00

0000

<Feed>

X: “Version No.” or “- - • • • • - -”

-- xxxx --

----------------

The cancellation of test mode do INIT.

9-2. Description

1)Key code representation: expect Value number, Clear and Feed button.

2)Various switches status display

		3) Testing for Display, Print, DRW, RAM:															Value number 1 column + #2
		4) Testing for E2PROM:															Value number 1 column + #2
9-3. Key code representation
		RF		JF		062		C			055		053		051		045		039		033		027		021		018
	072			067		061		056			054		052		050		044		038		032		026		020		017
		071		066		060		7			8		9		049		043		037		031		025		019		016
		070		065		059		4			5		6		048		042		036		030		024		014		015
		069		064		058		1			2		3		047		041		035		029		023		075		073
		068		063		057		0			011		012		046		040		034		028		022		074		013

013: #1 key 014: #2 key

— 13 —

9-4. Various switch status display

0: Fixed

For Taiwan

1: Journal mark sensor 0: Except it

For Taiwan

1: Receipt mark sensor 0: Except it

1: Fixed

Non taxable pad For Japan 0: Taxable (pat short) 1: Non-taxable (pat open)

Drawer sensor

0: Open

1: Close

Journal near end

1: Near end

0: Out of sense

Receipt off switch

0:Receipt on

1:Receipt off

Key clerk

0:Non

1~9, A~F:Clerk code (Hexadecimal representation)

Push clerk

0:Non

1:Clerk 1

2:Clerk 2

3:Clerk 3

4:Clerk 4

Mode representation

1:PGM

2:RF

3:REG1

4:REG2

5:X

6:Z

7:X2Z2

8:Off

0: Disconnected

— 14 —

9-5. Print, Display, Drawer and Ram testing to do a various test by value number key. The following code print by all means then.

1

#

1 #2: All testing

3

#

3 #2: E2PRom r/w testing

4

#

4 #2: E2PRom reading testing

5

#

5 #2: Ram reading testing

96

#

96 #2:E2PRom Initialization

8

#

8 #2: Printing testing

9

#

9 #2: Clock testing

1)

All lighting, Ram, R/W, setting the time and date, drawer

1

#2

opening, printing, receipt(Japan) stamp and receipt issue.

Display:	All lighting
Ram: R/W
	normal end:	To be continued
	Abnormal end:	To do the following printing then breaking
				- - - - - - - 2

Receipt printing

Beeping one shot buzzer on

Setting date and time:

Date: Dec. 31st 1994

Time: 23:59

Drawer open:

Drawer No.1 and No.2 are opened.

Test printing:

To do the following print

The first line does print in receipt, journal independence.

The second line does print at receipt, journal same time.

01234567FS@

01234567FS@

Receipt stamp: (only japan)

Receipt issue:

Testing display: To do indication as follows till key or a state changes

1234567890

— 15 —

2)

3 #2

Abnormal end:

3)

4 #2

This does R/W test of testing area of E2PRom during single word, and, at the time of normal, does normal termination print.

To do the following printing then breaking

- - - - - - - 8

Receipt printing

Beeping one shot buzzer on

This does read only test of testing area of EEPRom during single word. This test is continued till off mode or electric power supply enters it.

Abnormal end:

To do the following printing then breaking

- - - - - - - 8

Receipt printing

Beeping one shot buzzer on

4)

Read only test .

5

#2

Outside Ram(0000H~7FFFH) read in testing

The address comparing data which comes under it

= (A0-A7) + (A8-A14)

This test is continued till off mode or electric power supply enters it.

Abnormal end:

To do the following printing then breaking

- - - - - - - 2

Receipt printing

Beeping one shot buzzer on

5)

Blanking (OFFH writing) of data in EEPRom entirely.

9

6

#2

Time of day, a date are turned into zero entirely.

6)

All time ring print testing

8

#2

- - - - - - - 2

Receipt printing

7)

Time of day representation testing

9

#2

Time of day indication is done till clear Key

23 -59 12

— 16 —

10. PROGRAMMING THE CE-3700 SERIES CASH REGISTERS

The Casio CE-3700 series is capable of a versatile range of features and function that give it the capability to readily adapt to almost any retail environment. The cash register is programmed at the factory with the most standard operating features and functions. Your local business requirements, however, may call for other functions of a totally different keyboard layout.

This section explains the different functions available, as well as the procedures that you can use to tailor the cash register to specific needs. Programming is simplified through the use of worksheets for each function, and step-by-step flow charts that walk you through each procedure.

10-1. Setting the proper MODE for programming

• Program Modes and feature

	Mode	Purpose	Mode indicator
	Program 4	Assignment of 89 functions to programmable keys to create the	P4
		desired keyboard layout
	Program 3	Definition of machine features and key functions that enhance	P3
		printing, totalizing, reporting and overall operation
	Program 1	Programming of time, date and unit prices, amounts, rates, etc.	P1
		for enhanced security and automatic registration

You should perform the procedure shown blow as the first step of programming. Notice that the flowchart ends with an arrow on the bottom. This indicates that you should continue to the next programming procedure for the mode you specify.

• Procedure

Program

Program mode

Sub

Total

#1* Key

Program mode

Sub

Total

Set the Mode switch to Program

Enter a number to specify the program mode (1 ~ 4)

Press the Sub total key.

The display should show the letter “P” followed by the program number you specified (i.e. P3 = Program mode 3).

Press the # 1 key.

Enter 4-digit password.

Skip this step when the password is not programmed.

Press the Sub total key.

CA/Amt

Tend

key on standard keyboard.

Note: Program mode 1 is automatically set when the Mode switch is set to Program from another setting.

•Recommended programming sequence

Generally, you should perform programming in the following sequence. Note that we recommend you check what is programmed for each mode before proceeding to the programming operation.

—17 —