Panasonic KX-W1000 User manual

ORDER NO. KM68906279C1
ervice
Manual
Personal Word Processor
KX-W1000
Panasonic
Matsushita Services Company
Division of Matsushita Electric
Corporation of America
50 Meadowland Parkway,
Secaucus, New Jersey 07094
Matsushita Electric
of Canada Limited
5770 Ambler Drive, Mississauga,
Ontario, L4W 2T3

ORDER NO. KM68910506S1
Service
Manual
Personal Word Processor
KX-W1000
PERSONAL WORD PROCESSOR
Please use this manual together with the service manual for model no. KX-W1000, order no. KM68906279C1.
IMPORTANT
Subject:
Integration
of
ROM,
addition
of
parts
and
corrections.
000
р
АОС
Suffix
Serial No.
ROM(IC6) has been eliminated and its program has been integrated into Mask ROM(IC7) from Suffix "D".
li Logic Board Schematic (Page 6-7)
Added
LELIIIIIS- 24
Есе асасааачач Li
КОМ 1с6 1с2
одною (це ГПО | Jezeezee-
осоовбово | 1016 , | | осбобобо
от чаа
XTW3 -- 10S XTW3 + 105 Screw 3x10mm
PJHG717Z Rubber Cushion
| —— XTW3 + 12S Screw 3x12mm
PJWI2W1000M None
PJWI1W1000M PJWIW1000M IC ROM
ERBP88103K EXBP88103K Resistor Array (10K x 8)
Matsushita Services Company Panasonic Sales Company,
Division of Matsushita Electric Division of Matsushita Electric
Corporation of America 0f Puerto Rico, inc.
Меадоміала Parkway. San Gabnel industrial Park
= 50 e
Secaucus, New Jersey 07094 65th intantry Ave. Km.9.5
Carolina, Puerto Rico 00630

Wi Parts Location (Page 7-1)
E Correction
Please correct the service manual with following information.
4.2 Power Supply
b) +5 V Power Supply and Reset Circuit
RESET SIGNAL POINT Timing Chart
OUTPUT
+12Ү
n Power ON Power OFF
OUTPUT
1012 Pin®
RESET
1012 Pin®
-18 V

INDEX
Section 1 General Information
1.1
1.2
1.3
SpecIficatlünS «eceseripsaemcrimErre8sugrrekriedgrbcuriuestie-srisgr uet) xam Рене неба не 1-1
Furiction Key LocalloU оке нуна ооо аа оно йу а 1-2
Listiof Key FUNCIONS + ен нее Ри == "о с ISS des 1-3
Section 2 Removal and Replacement Procedures
2.17
Hwezdeé. dM MN p а ты а ооо БА ни Can dS ate dread 2-1
Display UNI з; =: саз адразае анка зака вааз ааваа ааа ааа ара аа аваа аа а 2-1
КӨЎБО@ ees тики яву лшн зки крнын ишик шын ай еШ RADAR 2-2
Main Logia BOS : како св Е казы AREA ERY CoRR RET OT ER 2-2
Floppy DISK DIE ¡008553000005 en e mete Hie ws eee ee HE Е РО Rad 2-2
Transformer and АС Power Gord ..ccaccenreaeewareemeiwa ud bubs eRws TR WHS ARE 2-3
Chassis гава саатан онна ASRIERMIE NIS RISEEISESU ааа 2-3
САПІВЇ «зкнаравокенеавточавнійююічавзна чів язатикочи скиз тава тичат ацие акт ревизии ве 2-4
RIDDON HOIGE? so os cee ocem er enda sews Seu ood Lees THOT TSH LOSE LH RE CHR EARS CHOW TERRE CER ERE 2-4
Ribbon Feed Molter iccuxcan; eeavewar sted tas tees адуи тама енна а обо іншо 2-4
Daisy Drive: UN вина рт о о "| тімен 2-5
Наттег апа Наттег $о!епоїй .......................................................... 2-5
Даівумітеві МЕЙСИ э. сы а ааа ан а оаа алана гана а ваба аа ашан 2-5
баптегерасіпа Мо... е ааа наа ааа а а се за е аА нала а ане я 2-6
Рарег Рова МОБОЕ 2 из гугеватанананеваткваањинњавањавана ита ава атаа саваа ЕА i 2-6
CarmlerCable oi cad cane se haces mada ване анана а ша а ашараи ла ба Cx RUNS X 2-6
Camer Cabe WME ««uossscearowsiRuSIiE I EO знах Е НИЕ 2-7
Section 3 Mechanical Functions and Adjustments
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
Рарег Ғееа Месһапізт . ..... +... оаа заар аа оша ааыа аа ааа раа о 3-1
РарегЕева Моїог,. гаа seri por patas iet Gehen аваа ка D or песня C e ce etn 3-1
LHneiSpaceDeltent «2 боб чија sect Roter e PD Cre endo Ed trata o oda poto Блејн на 3-1
Рарег Не!еасе Месһапїзт ..............................................зз...з. і | m C А 3-2
Platen Бас ПЗ, uon ni ad arty јен ede tre Ye a ор ac ree aen EXIT Еа gos de a Rd ce qi at TU Rn dara Soe Se м 3-2
Platen УапаНе Сішсһ Месһапізт......................................................... 3-2
Carrier Spaclng а 5 се казину звани ИРЕН Е сее ааа ая а а ая 3-3
CAMINO DORSO CHAA TURA XEREMARY кк аман ижа кен и жан тжен кып 3-3
Ribbon FBed :iseiekcác kac аи өз БҰзжекі ЕРЕ ҰҚ БіРжЕЗіІ ФӘӨРЕШЫҰтЕ БІ ЕЕЕ варе 3-3
Correction Tape Feed... «ciat o cin iab ect edi > ada 34
Daisywheel Motor and Сһагастег Ргіпііп0 ................................................... 3-4
а О со екю A el есе 3-5
Оаву Ноте РовШоп Асіивітепі........................................................... 3-6
Ribbon Lift Adjustment: 55.06. .c0: sens sens ewes eens ca ea sent eg mete ee sees eave sa emt ew eH eae EES 3-6

Section 4 Electronic Circuit Descriptions
41 Principle GFOPGMtiON «40: ss0% cass caee seed tees eet bees SEE CEET ERITREA RR ARA EA 4-2
42 Power Supply ....... панка геном на снови ГКК націо Чи? сала ен Теа пала 4-3
43 СР апа Сопї!го! Сїсийїй................................. а ава иу акен ризике 4-5
44. Keyboard MatrieCreull ss :2us ies wrensicuor ews ined tees teed eeoinoarebes en okie Eee see ses 4-11
45 “Liquid Crystal Display: surco erro ate еерее ааа авео аваа сіз 4-12
45- < De CiU sen ias oe dd ale e es od dea ро а 4-15
47 Floppy Disk Controller ,.-..>-».>»->%5<%555555555-55-2 666868966686 езе жане 4а тж. 4-19
Section 5 Floppy Disk Drive Unit
5.1 Сепега| Пезепрвол: иена ие я рев Пение аи рен ре нь и ааа 5-1
5.2 BIOCK DIAQKAM oui 5a. died sce mm Rm] Re ED ce Ride eA CMAP EATS FATE Ee Dee RET URS TORS? 5-1
Section 6 Circuit Diagram and Trouble Shooting
6.1 Logic Board Connection Піадгат ......................................................... 6-1
62 Explanatlon of COHneGEOIS аз im s im узана везива ха как ава њена ерла ве вечна 6-2
6.3 Сотропепі Не?егепсе бшіде............................................................. 6-4
64 Sehematic DIaGrE&lTIS ....— siete so a e va t e Rr e ri Ro oe lt атаана аш үс дауы жа е Ұнату а аад HO RERO а К 6-7
6:5 - "Trouble Shoatintg : „ло и жаы RYE Ық жаса а өсе анаға кже p 6-9
Section 7 Parts Catalog and Lubrication Points
1. о занесена аа ЕЕ ERA radares 7-1
2. Спаѕаівапа:Ріаїеп: „енын игна анан Бантон аа reat Dee Ede. 7-3
3. АПВ знака бро сары Во барі A aa da КЛ ЛИТ 7-5
4. Keyboard and Display «seas sexiliemceiewaibei legiiswrra?iveeTimge:iimurvmerdgegri-ePtisge:ren 7-7
6. ROWER ЗИрр Е x cn enacted raa ca ein eigo ав ea X eR Cu: x eel Qt S dfe рима e Id eoo T вана ад 7-10
7. Мат; ОД: Вбага! ион наи И а e UR В она 7-11
8. LCD Board and Volume Воага..........................................................1 7-14
10. Ғипсйіоп Воага апа РасКіпа Матегігіб ..................................................... 7-16
International CorrectSpell English licensed from Houghton Mifflin Company. U.S. Pat. No. 4,580,241,
4,730,269, 4,674,066 and 4,771,401. Copyright® 1985, 1987, 1988 by Houghton Mifflin. All rights reserved.
Reproduction or disassembly of embodied algorithms or database prohibited. Base upon The American
Heri Dicti

1. General Information
11 Specifications
Print Speed
Print Element Cassette type Daisywheel (Mono Plastic) 96 characters
Typing Pitch 10, 12, 15
Line Spacing 1, 13/2, 2
Print
Unit
Paper
Width
12"
(304
mm)
Writing Line 10" (254 mm)
Paper Capacity Original + 1
Ribbon Cassette Correctable, Fabric (Option)
Correction Tape Lift-off, Cover-up (Option)
Keyboard 45 Alpha/Numeric keys
Correction Memory 1 line
EN List/Phrase/Text 50,000 characters
Line Formats 1 format
Battery Backup Approx. 5 years (User, Phrase, Margin)
Accu-Spell Plus
User Dictionary 120 words
. 480 x 128 dot matrix LCD
Display
Number of chrs. 80 character x 14 line
Floppy Disk Drive Built in 3.5" floppy disk drive (353KB)
Voltage 120 V+ 10%
Power Requirements | Frequency 60 Hz
Power Consumption 35 W
Temperature 5°C (41°F) to 35°C (95°F)
20% ~80% RH
17" (М) х 15 9/16" (0) х4 5/8" (Н) (432 х 395 x 118 mm)
Approx. 14 °/16 Ibs. (6.5 kg)
Specifications are subject to change without notice.
1-1

1.2 Function Key Location
Typing Mode Key LIST Key
(Accu-Spell Plus)
Pitch Key
ADD Key
Line Spacing Key (Accu-Spell Plus)
Keyboard Key SC/NEXT Key
(Accu-Spell Plus)
ON-OFF Key (Accu-Spell Plus)
LCD Display Contrast Knob
Platen Knob
Power Switch
HELP Key
MENU Key
Floppy Disk Drive
1-2

1.3 List of Key Functions
The KX-W1000 Personal Word Processor has many functions for user operations and service operations.
a) User operations
These functions are executed by using the following CODE Key combinations. For more detailed information
please refer to the KX-W1000 Operating Instructions.
СОРрЕ+А ............... sets/releases auto carrier return mode in the typewriter mode
СОРЕ+В ............... sets/releases BOLD print
[top o MR centers information
CODE-E ............... embeds the display symbols
CODE +F ............... finds misspelled words (in edit mode)
CODEFG ............... disable the status and ruler lines information on the 14th line in Text edit mode
СООЕ+Н ............... Half spacing
CODE+E| «a3 seas seas caw sets/releases Paragraph Indent
CODE td «i ineraxsgi unus moves the carriage by 1/60 inch (Micro Spacing)
СОрЕ-К ............... stores line spacing to text
CODE +L — я changes margin format
CODE+O............... recalls Margin Format O
GODERP sicarios iorad sets a Stop Code in a text
СОрЕ+О ............... inputs sort rectangle in Address List
CODE+R ............... prints information with the last character on each line aligned at the right margin
CODE+S ............... searches words in a phrase or a text
searches strings in a record of Address List
CODE 4T 444-2224 <<... text append
СООЕЗЫМ............... sets/releases Continuous Underlining
СОРЕ+М ............... reference code for mail merge
CODE+W............... sets/releases Word by Word Underlining
ca AA sii replaces a word/words in a phrase or a text
СОВЕҮ ............... recalls Margin Format Y
СОБрЕ2 .>...-........» recalls Margin Format Z
GODEsFT i255 mn sets/releases the insert/over typing
CODE+2 ............... moves information block in a phrase or a text
1-3

СОБЕ- $: ; евозаяз каваая copies information block in a phrase or a text
CODE-«4 ............... deletes information block in a phrase or a text
СОрЕ +5 ............... sets page break
CODE+6 ............... sets page length
CODE#7 , гаса о jumps to desired page
СОВЕ+-8 . ас го, controls the impact of the printed characters
CODE+9 ............... recalls phrases
СОРЕ+0............... enables the Thesaurus feature
CODE+MARREL ........ displays the layout of text
CODE +BACK SPACE ..... reverse word by word scroll
CODE+FWD ............ forward word by word scroll
CODE + <x] MOD makes correction manually in the typewriter mode
delete a record in Address List
CODE -- - (Нурпеп) ...... Регтапепі Нурпеп
CODE+SPACE BAR ...... Permanent Space
CODE+TAB............. aligns decimal points at the preset tab stops
CODE+TABCLR......... Clears all tabs and margins
CODE + RETURN ......... searches the return mark while executing the word search command or the word
replace command
CODE+LOCK ........... Presets the unit for typing capital letters, lower case numbers, punctuation marks i
symbols
ССОРЕ] „зоа. next search word (in edit mode)
CODE FF currence enes we previous search word (in edit mode)
CODE+RELOC EXP ...... express return
CODE-? ............... Mail Merge recorder header
CODE * NEXT PAGE ...... scrolls to the previous page
scrolls to the previous RECORD of Address List
СОРЕ+Ф............... scrolls to the previous display
CODE Fh serm mme scrolls to the next display
СОВЕ+—.............. advance the cursor to the beginning of the line
СОрЕ+е .............. advance the cursor to the end of the line
CODE + QUICK ERASE .. . . deletes one line at a time
1-4

b) Service operations
The following functions support service and are accessed by turning ON the Power Switch while pressing the
INDEX (1) Key and the T Key. Before executing the service mode, insert paper in the printer to print results.
KX-W1000 TEST MODE
. KEY Check (OUT)
. KEY Check (IN)
. ROM/RAM Check
. LCD Check
. FORMAT Check
. FDD R/W Check
1.Keyboard Check (OUT)
This mode is used for checking the outer keys of the Keyboard, as shown below.
1)Press the number 1 key to execute the outer key check.
2) After the machine displays "TESTING... OUT", press each of the keys in the outside groups(1) to@), in order.
3) The results of the test are displayed as follows. When an abnormal condition exists, the result will be displayed
in the LCD with a 0 or 1. 0 indicates an abnormal key, 1 indicates a normal key. If 0 appears in the chart, exit
this mode by pressing the RETURN key, and refer to the matrix chart on the next page to determine which key
is abnormal. Repair or replace the abnormal key.
onr 00| NORMAL ABNORMAL
KEY OUT OK Check KEY OUT
PRINTER KEY OUT OK Check KEY OUT
2. Keyboard Check (IN)
This mode is used for checking the inner keys of the Keyboard, as shown below.
1) Press the number 2 key to execute the inner key check.
2) After the machine displays "TESTING... IN", press each of the keys in the inside groups) to ©) , in order.
3) The results of the test are displayed as follows. When an abnormal condition exists, the result will be displayed
in the LCD with a 0 or 1. 0 indicates an abnormal key, 1 indicates a normal key. If 0 appears in the chart, exit
this mode by pressing the RETURN key, and refer to the matrix chart on the next page to determine which key
is abnormal. Repair or replace the abnormal key.
NORMAL
KEY IN OK
KEY IN OK
ABNORMAL |
Check KEY IN
1-5

Key Matrix Chart
Example Abnormal
|
01111111
11111111
11111111
11111111
11111111
11711111
11111111
11111111
11111111
11111111
11111111
3. ROM/RAM Check
This mode is used for checking the ROM/RAM.
1) Press the number 3 key to execute the ROM/RAM check.
2) The results of test are displayed as follows:
NORMAL ABNORMAL
Check ROM
ROM/RAM OK Check DRAM
Check SRAM
ROM/RAM OK Check ROM/RAM
4. LCD Check
This mode is used for checking LCD.
1) Press the number 4 key to execute the LCD check.
2) If the display is not clear, adjust the contrast control.
3) Observe the close hatch pattern on the LCD. If a horizontal or vertical line appears, the LCD is defective.
4) Press the RETURN key to exit from this mode. "LCD" will be printed on the paper.
ABNORMAL ABNORMAL NORMAL

5. FORMAT Check
This mode is used to check the Disk Format.
1) Press the number 5 key to execute the Disk Format check.
2) The program automatically formats the floppy disk. The results of test are displayed as follows.
NORMAL ABNORMAL
Check FORMAT
FORMAT OK Check PROTECT
Check NO DISK
Check DISK
PRINTER FORMAT OK Check FORMAT
6. FDD R/W Check
This mode is used to check the FDD read and write functions.
1) Press the number 6 key to execute the FDD R/W check.
2) The program automatically writes test data to tracks 0,40 and 79 on the disk and reads the data then checks
whether the data is correct or not. The results of test are displayed as follows:
ABNORMAL
Check WRITE
Check READ
FDD R/W OK Check PROTECT
Check NO DISK
Check DISK
PRINTER FDD R/W OK Check FDD R/W
Formatted disk is required for testing.
Note:
7. Other Functions
The following functions are executed by turning ON the Power Switch while pressing the Key combinations
shown below.
Display Message
УНЈЕТРАРЕ сова пена сви виза Daisy home position is adjusted ............ "DAISY ADJ."
RELOC +QUICK ERASE ................ Test data printing ........................ ‘TEST PRINTING"
A umor rx ms бетопвігайоп ........................... *No message
$5НЕТ+СОРЕ ........................ Clears all tabs, margin and RAM ............ No message
* Pressing PRINT key performs demonstration print.

2. Removal and Replacement Procedures
For reasons of safety and to avoid possible damage to electronic components, the AC Line Cord must be
removed before disassembly.
Platen Knob (L)
Upper Cover
Display Unit
Platen Knob (R)
Upper Cover
21 Upper Cover
1) Remove the Platen knobs from both sides of
the Platen by pulling them outward.
2) Remove 3 screws from beneath the front
edge of the Bottom Cover, 2 screws from the
middle of the Bottom Cover and 3 screws
from the lower.
Carefully lift and remove the Upper Cover
while observing the right side of the Platen
shaft.
Unplug the LCD Display flat cable CN7 and
the Selector Keys flat cable CN8 from the
Main Logic Board by lifting up the Upper
Cover from the Bottom Cover.
3
—
4
—
Important Note:
Special clamping connectors are used for the
Selector Keys flat cable CN8. To avoid cable
damage, release clamp by pulling away from
Board, as illustrated, when removing the flat
cable. When reinstalling the flat cable, insert
it and then push clamp fully toward Board.
Replace in the reverse order.
Note:
When reinstalling the Upper Cover, install the
right side first. Be careful to line up the Paper
Release Lever and the right side of the Platen
to the respective openings.
2.2 Display Unit
1) Reverse the Upper Cover and release the fiat
cable clamp from the Upper Cover.
2) Push in the Pivot located on the LCD Contrast
Knob side and remove the Display Unit from
the Upper Cover.
3) Remove the 4 screws from the LCD Rear
Cover.
4) Carefully remove the LCD Front Cover As-
sembly by releasing the five hooks and open-
ing the LCD Front Cover Assembly from hook
side.
Unplug the flat cable from LCD Board and lift
out the Display Unit Complete with the Con-
trast Board.
5
—
Replace in the reverse order.
Note:
When reinstalling LCD Front Cover Assembly,
be sure to align the contrast control knob with
the contrast control potentiometer.

Main Logic Board
FG Plate
Ground Wire Main Logic Board
Floppy Disk Drive
2-2
2.3 Keyboard
1) Lift the Keyboard up and to the left.
2) Unplug the Keyboard flat cables CN5 and
CN6 from the Main Logic Board.
Replace in the reverse order.
Note:
When reinstalling the Keyboard, slightly lower
the FG Plate and correct it by Keyboard.
2.4 Main Logic Board
1) Remove 2 ground wire screws.
2) Unplug the Power Transformer connector
CN1, the Carrier Spacing Motor connector
CN2, the Paper Feed Motor connector CN4,
the Carrier flat cable CN3 and the FDD flat
cable CN9 from the Main Logic Board.
3) Remove the 5 screws (-«[) and lift out the
Main Logic Board with the Power Switch.
Replace in the reverse order.
2.5 Floppy Disk Drive
1) Remove the 4 screws from the Bottom Cover.
2) Carefully raise the Floppy Disk Drive from the
Bottom Cover and remove.
3) Remove the 4 screws from the FDD Plate.
For more detail, please refer to the section 5.
Replace in the reverse order.
Note:
Connecter CN9 must be unplugged before
lifting the Floppy Disk Drive.

$ Power Transformer
Closed End Connector
Wire
H
t
1 mm! - С)
3 Я Vio
AC Cord
Platen Latch
Platen
Paper Release Lever
О
+
Press
ME %-
2-3
2.6 Transformer and АС power Cord
1) Remove the 2 screws from the Power Trans-
former.
2) Release the AC Cord from the Bottom Cover.
3) Remove the Power Transformer with AC
Cord.
Replace in the reverse order.
Note:
When replacing the AC Cord, make sure that
it is routed as shown in the illustration.
Safety Notice:
When replacing the Power Transformer and AC
Cord, please follow the procedure below.
1) Carefully strip the lead ends and twist the
wires together.
2) Fully insert the wire end into the closed end
connector (Crimp-ON Type).
3) Firmly crimp the connector with appropriate
tool.
2.7 Chassis
1) Pull the right Paper Release Lever and
remove the Platen by rotating the Platen
Latches toward the front of the unit then lift
the Platen from the Chassis.
2) Remove the Paper Pan.
3) Remove the 2 screws from the Chassis.
4) The Chassis can be removed.
Replace in the reverse order.
Note:
Connectors CN2, CN3 and CN4 must be un-
plugged before lifting the Chassis.
(refer to section 2.4)

Carrier Cable Hanger 2.8 Carrier
1) Unplug the flat cable from the Carrier.
2) Position the Carrier in front of the left side rear
frame opening.
3) Remove the screw from the Carrier Cable Hanger.
4) Remove the screw from the right side frame.
5) Remove the spring from the right Bail Lever Arm.
6) Carefully move the Bail Lever Arm away from the
end of the Carrier Shaft.
7) Carefully slide the Carrier Shaft to the right.
8) Remove the Carrier.
Replace in the reverse order.
Carrier Shaft Carrier Rear Guide
Ribbon Holder 2.9 Ribbon Holder
1) Pull the Cam Follower out of the groove in the
Drive Cam.
2) Slightly slide the Ribbon Holder to the right and
remove it upward.
Replace in the reverse order.
Cam Follower
Drive Cam
2.10 Ribbon Feed Motor
1) Unsolder the Motor leads from the Ribbon Feed
Motor.
2) Remove the 2 screws from the Motor.
Replace in the reverse order.
24

Card Holder
Front Support
à; Spring
М Ви
- /, Plastic Washer
E-rings
Screw Daisy Release Lever
Hammer Solenoid
Daisywheel Gear
2-5
2.11 Daisy Drive Unit
1) Remove the Front Support and the Card Holder
by removing the screw.
2) Remove the E-ring and the Drive Cam.
3) Remove the screw from the Ribbon Sensor
Board.
4) Remove the screw from the Carrier Board.
5) Remove the spring.
6) Remove the Clip from the Slide Shaft.
7) Remove the Slide Shaft by pulling it to the front.
8) Carefully lift off the Daisy Drive Unit, Carrier Board
and Ribbon Sensor Board together.
Replace in the reverse order.
2.12 Hammer and Hammer Solenoid
1) Remove the E-rings from the Hammer Pivot Shaft.
2) Slide the Shaft to the left and remove the Hammer
with the plastic washer and spring.
3) Remove the 2 screws from the Hammer Solenoid.
4) Remove the Solenoid.
5) Unsolder the Solenoid leads from the Carrier
Board.
Replace in the reverse order.
2.13 Daisywheel Motor
1) Remove the E-ring A from the Daisywheel Gear
Shaft.
2) Pull the Daisywheel Gear forward to remove.
3) Remove the screw from the Daisywheel Motor.
4) Remove the E-ring B from the Daisywheel Shaft
bushing.
5) Remove the Bushing.
6) Remove the Motor.
7) Unsolder the Motor leads from the Carrier Board.
Replace in the reverse order.
During replacement check the following:
e Make sure that leads match with indicated
color as shown in the figure.
e Make sure that the marks on the two
Daisywheel Drive Unit Gears are aligned.

Screws
Carrier Spacing
Motor
Paper Feed Gear
Paper Feed
Motor
Cable Gear
Tension Pulley Shaft
Tension Spring
2-6
2.14 Carrier Spacing Motor
1) Remove the 2 screws and disengage the motor
from the Cable Drum.
Replace in the reverse order.
Note:
Connector CN2 must be unplugged before
removing the motor as in section 2.4.
2.15 Paper Feed Motor
1) Remove the E-ring from the Paper Feed Gear
Shaft.
2) Remove the Paper Feed Gear.
3) Remove the 2 screws and pull the Motor
downward to remove it.
4) Unsolder the Motor leads.
Replace in the reverse order.
2.16 Carrier Cable
1) Remove the Tension spring from the Tension
Arm.
2) Remove the Tension Arm from the frame.
3) Remove the Cable Gear Shaft screw and the
Cable Drum.
4) Release the cable ends from the Carrier Cable
Hanger.
5) Unwind the Carrier Cable.
Replace in the reverse order.
Follow the next step 2.17 for winding the cable on
the Drum.

Cable Jig
2.17 Carrier Cable Winding
Note:
Use of Carrier Cable Jig No. PJZXXR250M will make
cable installation much easier, as illustrated.
1) Insert the short end of the cable through the
lower hole and back through the upper hole,
pulling until the cable stops.
2) Wind the short cable end 3 full turns clockwise
around the drum, starting in the first groove and
hold while proceeding with Step "3".
3) Wind the long cable end 4 ful turns
counterclockwise around the drum, starting in the
first groove from the outside, and hold.
4) Slide the Carrier Cable Jig onto the drum, as
illustrated, with the cable ends through the Jig
opening.
Note:
e The cable can be held in place with tape if the Jig
is not available.
e Pull the Carrier Cable Jig downward to remove.

3.
Mechanical
Functions
and
Adjustments
Platen
Paper Pan
Rear Feed Roller
_«—— Paper Release
Е 22,
2, Plate
Front Feed Roller
(Right Side View)
Reed Switch Platen Gear
Sector Gear
Intermediate
Gear \ 7
Мадпе! E!
mm ui,
Magnet S E ПШ ре,
Paper Feed E
Motor рено
Detent Lever
3-1
31 Paper Feed Mechanism
The paper feed mechanism, mounted on the Chas-
sis, consists of the Platen, a spring-loaded Paper
Release Plate and a floating Paper Pan which has 3
front and 3 rear Feed Rollers. As paper is inserted, it
is guided between the rear Feed Rollers and the
Platen, where it is gripped and fed as the Platen
rotates. the paper can be advanced manually
though use of either Platen Knob.
3.2 Paper Feed Motor
Drive for the Platen is provided by a DC motor, which
rotates the Platen through a Sector Gear engaged
with the Platen Gear. One complete revolution of the
Intermediate Gear and Sector Gear provides 1/2 line
space movement to the Platen. As the Motor is ener-
gized, it begins to rotate counterclockwise (viewed
from the top) and its Gear causes the Intermediate
Gear to rotate clockwise, bringing the Sector Gear
into engagement with the Platen Gear and advancing
the Platen. The Home Detecting Lever is activated
by Cam rotation and Magnet Shutter mounted on the
top of the Home Detecting Lever turns the Reed
Switch off. The Motor and Gear continue to turn
through momentum until a full revolution has been
completed. After rotation is completed, Platen posi-
tion is maintained by a springtoaded Detent which is
engaged with the Platen Ratchet. The Paper Feed
Motor is actuated whenever the Carrier return key is
depressed.
3.3 Line Space Detent
After each line space operation, the Detent Lever is
fully seated between 2 platen gear teeth by the ten-
sion of the spring attached to the Detent shaft to ob-
tain proper line space operation.