Sharp ER-1911 User manual

SHARP _ SERVICE MANUAL
CODE:00ZER1921SM2E
ELECTRONIC CASH REGISTER
No.2: Hardware manual
ER-1 91 1 (Europe Ver.)
ER-1921
ER-2 S386 us, Ver.)
move. ER-2396
SRV Key :LKGIM7113RCZZ
CONTENTS
L. ER-191 1/ER-2386 ........ cece cececereeeeeeeeseeereeeeeneerepereeensnsenerenaens
1. TEST FUNCTION (ER-1911/ER-2386)
2. CIRCUIT DESCRIPTION (ER-1911/ER-2386) ...
3. CIRCUIT DIAGRAM (ER-1911/ER-2386) ...........:ceeeeseeeeeeeeees 12
TL. ER-1921/ER-2396 .2.......cccecceeeneeeeeeeeeeeceeteseeceeesaseeaeeeeerenerene 15
4. TEST FUNCTION (ER-1921/ER-2396) .........ccccceseeeereseneeeeees 15
2. CIRCUIT DESCRIPTION (ER-1921/ER-2396) ...
3. CIRCUIT DIAGRAM (ER-1921/ER-2396)
TIL. INSTALLATION MANUAL FOR OPTIONS. .........:::eeeeeeereerees 32
a
SHARP CORPORATION This document has been provided for
service training program and is subject
to revision without notice.

I. ER-1911/ER-2386
1. TEST FUNCTION (ER-1911/ER-2386)
1-1. Start of test function
The following key operation is required in the SRV1 mode to start
the test
20 > RE] or [REND
Test command
RE] key : ER-1911
BEND] key : ER-2386
1-2. List of test command
No. Description Key operation
1_|Mode switch test 1 [RF] orfRFND.
2 |Key test XXx02 [RF] orfRFND!
3. | Display test 3 = [RF}or|REND]
4 .| Buzzer test 4 > [RE] or[REND.
5 | Receipt ON/OFF switch test 5 + [RF] or[RFND]
6 | Drawer open test {with option installed) 6 > [RF] or[RFND}
7_|Printer test 7 — [RF] or[REND-
8 | RAM test 8 = [RF] or[RFND]
9 | Key position code test 9 — [RF jor[RFND
10 [Sequential test XXX11 > [RE] or[AFND
XXX : Sum check data for standard key layout
ER-1911{5DEPT.)=22 ER-2386=237
ER-1911(10DEPT.)=213
41-3. Test description
1) Test No.1 : Mode switch test
® Key operation
1 -+ [BF] or REND)
Then, turn the mode switches in the following order.
Mode switch operation
SRVI
PGM
[eq] or VOID
of OFF
TIME i
REG
x
Display
Lary.
IM ine
x222 u
Mode switch position layout
For ER-1941
REG
For ER-2386
REG
TIME
o
xt xt
Z
X2Z2.
PGM
(SRV1)
(srv2) (SRV2)
@ Description
As the mode switch position number is displayed, check the
number.
@ Termination
The mode can be terminated when the mode switch is turned
to the SRV1 side from other position.
Termination print 1
Error print = 2 (zaaa 1E
2) Test No.2 : Key test
© Key operation
eo or [REND]
Test command
Sum check data
Enter the test command in succession to the sum check data
of the model.
Modet Sam check data_|
ER-1011 : SDEPT. 22
ER-1971 10DEPT. | 2is*
ER2386 10DEPT. 267"
* NOTE : Sum check data
The checksum is a decimal number obtained by converting
jow two digits of the hard code haxadecimal total of all keys.
The[TL] or keys are exception.
+ Next, push every key on the keyboard except for the receipt
and journal keys.
When the [TL] or [CA/AT] key is depressed, the termination
printout is immediately produced assuming that all keys have
been depressed.
There is no order in which the keys have to be depressed.
+ Keyboard position code of model vs. key lay out
[All key position code]
A2| 12 | 04 | 02 | 03
cic eel |
R lJ 41 | 42 | 72 A3 | 32 | 14 02; 01
43 | 44 92 |s2 73 A4 | B2/ 13 03 | 22
54 | 53 93 les 74 A1|B4) 34 11 | 24
52 | 63 81 loa 84 71 |B3/ 33 23
51 | 62 61 | 64 91 /B1)31 21
{ER-1911]
5 DEPT.
A2} 12 02
R ee 41 | 42 |72 32 01
43 | 44 92 |82 |73 B2 22
54} 53 93 (83 |74 B4 24
52/63 81 (94 |84 B3 23
51 62} 61 | 64 B1 TL

10 DEPT.
a fh 41 (42 |72 32) 14 01
43 | 44 92 | 82 |73 B2| 13 22
54 | 53 93 | 83 |74 B4| 34 24
52/63 81 1.94 | 84 B3 | 33 23
51 | 62 eife4} | B1|31 Th
ER-2386] aw
02 |03
als 4 a2 |72 32 [14 o1
43 | 44 92 82 |73 Ba {13 22
54/53 j93 83 |74 11 | 24
52 | 63 [at 94 | 84 23
51 | 62 61 | 64 CAAT
® Description
Until the depression of the [TL] or [CA/AT} key, the sum of key
position codes is compared with the sum.check data, except
for the [TL] or [CA/AT] key.
® Display
+ Display the hard code of the key pressed.
+ High and low digits of the hard code are separated with a
hyphen *-".
+ Ifthe hard code value is A or B, it will be converted into
decimal equivalent and displayed.
A 10
Boil
© Termination
The test terminates with the depression of the [TL] or [CAYAT]
key and the termination printout is produced.
Termination print: | 2/24
Error print |
3) Display test
@ Key operation
RE} or] REND
35
@ Description
The display pattem is kept displayed in the given interval after
the test mode was established.
Press any key to cancel the test mode. In this event, the
display returns to the initial message display.
+ Disptay
'
Li Bel 86 di:
Lott al 6 8 tt
7
15 66 AB
LS 6 648 2 ly
al £6 4 8 AA OY
Eee ce
@ Termination print : { a |
4) Test No.4 : Buzzer test
@® Key operation
4 [RF] or [RFND)
@ A continuous beep will be issued when in this mode. Press any
key to cancel the test mode, The beeper will then be turned
off.
+ Display
@ Termination print : I 4 1
5) Test No.5 : Receipt ON/OFF test
@ Key operation
5 [BE] or [RFR
@ Description
The following is dispiayed according to the location of the
receipt on/off switch.
Display : | 5 O|Receipt on (contacts open)
5 C]Receipt off (contacts closed)
® Termination
With depression of any key,
Print out : { 5 t
6) Test No.6 : Drawer open test
© Key operation
6 > [RE] or [RFND
@® Description
With this test, the drawer opens and its state is displayed in
the following manner.
Display: [ 6 0} Drawer open
fa C] Drawer close
For the model with the drawer ‘open sensor, check that the
display shows “0 when the drawer opens, and "C* when it
closes.
For the mode! without the drawer open sensor, check that the
display always shows "C’.

® Termination
With depression of any key.
Print out : \
7) Test No.7 : Printer test
@ Key operation
7 -» [RE] or [REND
® Description
Receipt switch in the position OFF: Continuous printing is
done,
Receipt switch in the position ON : After a cycie of printing,
the operation terminates automatically.
Display :
® Termination
When the receipt switch is tuned fram OFF ta ON position
while printing is continuing, the test terminates after a cycle of
printing.
JA continuous print example]
Address vs. data
EB-2386 ER1aiL
oo
Cooo0ddsaaT
Uitidy tag rinttnia
2222222208 222222220
BE333333E0 33333333E
SEER AGELESS 44446446
5555555570 555555557
6666666608 656666660
TAVITTTIX TTVITITVIX
8eeaessare 88888883
I99DIIIOE 99999999K
Lea eee
peers!
terres y £4
8) Test No.8 ; RAM test
© Key operation
8 [RF] or [REND
® Description
After writing the tollowing data in the RAM, the data is check
by reading the RAM.
i an error occurs, the operation ends with the termination
error printout.
The application will handle it as address O00OH~3FFFH and
4-bit data by the handler and converted to the address
Q000H~1FFFH and 8-bit data,
NOTE: The data in the RAM is cleared by this test.
Perform a master reset function ater this test is completed.
“Torre gg se 7 a OP ATR CID ETE
TOI [Oi 2 ss 5 Si TSH ABCD RIE
DOR {PTOI 28 4S OTS I IAIBIC DIE
@0 4X )BiFi0/31213:4;5!6/7/ 8) 91AIBICID
@ ON [DIEIFlO1112:914'516:7:18:9:Ai BIC
O LOX (CIDIE:FHO(1i1 213341516171 819 1 ALB
OZONIBICIDIFIFLOL 21S 415 BT BGA
04 0X JAIBICIDIB FO 12 si a Si si 7i eis
THON |OABICIDIBIFi0 1; 213: 4 516/718
TOOX |Si9:AIBICIDIEiFiOilizisiai si giz
SOON IT SIV ABICIDIB FlOlil 273 afsis
‘The write data to other address will be 0.
Display: | 8
@ Termination
8 ( (=2Ses55 gE |
Normal termination print out Error print out
9) Test No.9 ; Key position code test
® Key operation
9» (BE or FAD}
® Description
Shows the hard code of the key pressed, except for the
[CA/AT}key- :
Press the[TL] or key to cancel this test mode.
* Display
LA 1.
: Indicates the hard code of the key depressed.
High and low digits of the hard code are separated with a
hyphen *-".
if the hard code value is A or B, it will be converted in to
decimal equivalent and displayed,
@ Termination
40) Test No.10 : Sequentiat test
@ Key operation
40 -» [RE) or [RFND}
Sum check data
@ Description
Checksum for the keyboard test js similar as the Jab#02, is a
decimal number obtained by converting low two digits of the
hard code hexadecimal total of all keys.
With this test, test items 1~8 are executed in succession. The
basic print pattem, however, is used for the printer aging test of
en 7.
The basic print pattem wilt be printed just for once, ragardless
of the receipt switch position.
Termination print (or error print) will be obtained avery time a
test has completed before going to a next test.
After compietion of the test item 8, the stamp is printed and a
receipt is issued and the sequential test terminates.

Key operation, display, and printout of tests
No. Test Key operation Display Print (norma! pattern) Note
1 | Mode switch
Made switch
2
SRV1
2 Key Key entry
TL key
3 Display
The display
pattern wil}
continue until a
key is pressed.
(Any key)
4 Beeper Beep
(Any key) Beep stop
5
Receipt
Receipt
issue
ON/OFF
active
—
Receipt issue
}
|
(Any
key)
not
acive
6 |Drawer open Drawer open
NOTE; Drawer
(Drawar
close)
open
sensor
kit
{Any
key)
must
be
installed.
7
Print
Le
ER-4911
ER-2386
| 8 RAM
(Stamp printed and
receipt issued)
@ Termination
All tests automatically terminate open finishing the stamp test.

2. CIRCUIT DESCRIPTION (ER-1911/2386)
Circuit block diagram
Voltage
regulator
Printer power source VP, VM
Display power source VDISP
AC power Power
Do-DC Drawer Buzzer
converter
Power ON/OFF switch
Strobe signal
ol aise
peta ae LsI
Mode switch} S808 x uPD75217
Receipt
ON/OFF
cutoy Address|
Latch
Power Ad-
switch dress
Operator
__ side display tube
display tube 9MT9BG
PMT98GY
RAM
HM6264,
Fig. 2-4

2-1. hPD75217 Terminal signal
No.|[ Name Description T/o
T ss Kéy strobe/Display tube segment signal (d) out
2] s2 Key strobe/Display tube segment signal (c) out
3] $2 Key strobe/Display tube segment signai (b) out
4| so Key strobe/Display tube segment signal (a) out
5 | POO Power off signal in
6 | Pol Print data shift clock output out
7 | Boz Print data output out
8 | Po3 Key return signal in
3] a Printer timing signal input in
10] P11 Key return signal in
Ir | Piz Key return signal in
12 | P13 Key return signal in
13 |. -cs1 RAM chip. select signal out
14 [° -wE RAM write signal out
15 | P22 Printer motor on signal out
16 | P23 Drawer open signal out
17 | P30 Mode switch return in
18] P31 Key return signal in
19 | P32 Address latch enable for RAM out
20 | A12 RAM Address bus Al2 out.
21 AB RAM Address bus Aé out
22 AD RAM Address bus A9 out
23 All RAM Address bus All out
24 ALO RAM Address bus Al0 out
25 DI/A0 Data bus D2/Address bus _Al0 in/out,
26 D6/A: Data bus Dl/Address bus Al in7out
27 DS/A4 Data bus DO/Address bus A4 in/out
28 D4/A2 Data bus D7/Address bus A2 in/out
29 PPO Buzzer signal out
30 XL X'tal terminal 4.19MHz in
31 X2 X'tal terminal 4. 19MHz in
32 vss GND in
33 xTL Timer X‘tal terminal 32.768KHz in
34 XT2 Timer X'tal terminal 32.768KHz in
35 DO/A7 Data bus DO/Address bus A7 in/out.
6 DIZA' Data bus Di/Address bus A6 in/out
37 D2/A5 Data bus D2/Address bus AS in/out
38 D3/A3 Data bus..D3/Address. bus A3 in/out
39 ~RESET Reset signal input in
40 TO Display tube 1st digit drive signal out
Hitt} bisslay tubs and digit drive signal ——— out
a2 | T2 Display tube 3rd digit drive signal out
43 | T3 Display tube 4th digit drive signal out
44] T4 Display tube 5th digit drive signal out
45 | TS Display tube 6th digit drive signal out
a6 TS |— Display tube 7th digit drive Signal out
47 | 17 Display tube 8th digit drive signal out
48} T8 Display tube 9th digit drive signal out
a9 | T9 NU
50 | PH3 NU
Si | PHZ Wo
2 | PHL Printer magnet data output enable signal out
53 | PHO Printer magnet data strobe signal out
54] Sil Key strobe signal out
55.| S10 Key strobe signal out
[se + Vioad Power (-20V) for display in
57 | Vpre Power (-4V) for display in
58] 59 Key strobe signal out
59] 58 Key strobe signal, Display tube segment (¥) out
60 | S87 Key strobe/Display tube segment (DP) signal out
ei | 56 Kéy strobe/Display tube Segment signal (9) out
62 | s5 Key strobe/Display tube segment signal (f) out
63; S4 Key strobe/Display tube segment signal (e) out
64 | vpDD Power (+5V) in

2-2. Circult description
4) RAM Read/write circult
HM5264 pPD75217
Data bus i
po-07 K DOYA7-D7/A0
Address bu
ADAI2
P32
40
AB-AIL
WE We
os E tsi
Fig. 2-2
Since the 8-bit data bus of the pPD75217 shares the same lines
with the 8-bit address bus of the HM6264, selection of the RAM
chip by the pPD75217 causes the HC973 to latch the 8-bit
address when P32 of uPD75217 is inputted.
DOK?
~DIIA2
HC978
output
Ta =
wR H
RAM data read timing
2) Battery Circuit
o os .
v0.00 —D+ De vecisvi
ama voo isv
a0
cr
—- : Battery recharge current
---+ : Battery discharge circuit
Fig. 2-3
3) P-OFF Circuit
Power SW
Torr eweon
Fig. 2-4
At power on
When P-ON voltage reaches 16V, the current flows through the
zener diode (MTZ16B) so that the level at point @ goes high.
‘The eve} of P-OFF rises as VCC increases. As a result, the P-
OFF signal changes from low to high level.
At power off
When the power is turned off, the P-ON voltage drops under 15V
causing the zener diode to stop current flow, which causes
potential at point @ to drop.
Power ON Powe: OFF
sav
Pon / \ as
tov
rom @ / \ eno
tv
Pore Se
~ 8y
Reset GND
Fig. 2-5
4) Key and switch
so~-S11 Key scan signal
POS, P1i~P13 Key return signal
vo : Power switch
P-ON Made switch
P3ok Mode switch
Return signat

5) Display control
80-88
pPD75217
Fig.10-7
a~g: Display segment
DP :. Decimal point
Vv: Indicator
Fig, 2-7
A-G, PLY
Display tude

6) Printer control
Block diagram
CR-802A or UCR-802A PRINTER
yPD75217
PO2 -}———|
PHO | -
we
us Charactor
Pot aa selecting
he magnet
PHI ju}
xe |
st oy a,
Mio
ee]
st
bas
cK OS.
ane, |
Ca ag
ie
a
imet a et
STAMPmagnet
ar J-FEED magnet
<I>. iia} A-FEED magnet
alo; MOTOR
“f+ |
sco
TIMMING
GENERATOR;
HH
Fig. 28