Sharp CE-150 User manual

----SHARP----
SERVICE MANUAL
CE-150
Color graphic printer
WWW.
PC-1500
.INl'O
SHARP CORPORATION
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SERVICE MANUAL
DPG 1301
COLOR GRAPHIC PRINTER
{CE-150 Printer)
TABLE OF CONTENTS
Page
I. FEATURES AND OUTLI NE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
2. SP E CIFICATIONS , • , • , •.• , , .•.•.•.•• . . .. • . .. •, ......... .. . .
3. M ECH A NISM A.ND OPERATION . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . 4
4.
DISASSEMBLY A ND R EAS SE MB LY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
S. R EP AIR AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . 16
6. OILING STANDARD . . . . ....... . . . . .. . . .. . . . .. . .. . . . . . . . . . . . 26
7. AD H ES ION STANDARD . ... . . . ... . . . ... . .. . ....... . . . . ... . .. 27
8. CIRCUIT DI AGRAM & WIRING . . ... . .. .. ........ ... . .. . • . . . . . 28
9. PAR TS GUrnE AND PARTS LIST .... . ....... . . . • . . . • .. . . . .... 29
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Tho ColorGraphic P"rinter DPG 1301 is an X·Y polo ttcr that uses ball·po int pens as its writing instru·
ments. Driven by stepping motors, it is capable of high accuracy plott in g with a resolution of 0.2 mm
and printing at a speed
of 12 cps. The carriage bas a four-pen capacity. COior selection is done by
moving the caniagc
in an X axial direction, permitting random colorgraphic plotting. The printer has
tl1c folowing features:
I) 4-colorgraphic plotting
2) Compactness and light weight
3) High resoluti on of 0.2 mm x 216 steps
4) Printing of a max.imum of 36 colum n s/ line
5) Powered by a ni ckel-cadmium ba tt ery
6) 58 nun width pla in paper can be used
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1. FEATURES AND OUTLINE
Th e co lor graphic printer is an X-Y plotter that uses ball point pens.
It permits high speed printing of as many as 12 characters per second with high resolution power of
0.2mm a.s driven by the stepping motor.
Four pens or different colors are fitted on the carriage which pe rmits you todrawgraphics or different
colors as the col or is selected in moving on the X'1xis.
I. Fourcolor graphic plot
2. Compact and light weight
3. Bigh resolution of 0.2mm x 216 steps
4. Print ing width of 36 columns/line at a maximum
S. All ows operation by means of Ni Cd battery
6. Use <>f ordinary paper of S8mm wide
2. SPECIFICATIONS
1. Mod el name: DPG 1301
2. Pri nt ing f unc tio ns
Print method:
Drive system:
Printingspeed:
Printingcolumn s:
S tep1 > ln g speed:
S1 e1>p ln g distance:
Line drawing speed:
Character size:
Ball point pen recording with four color rotary select system
Drum type
X-Y plotter
12 characters/second for specified characters (Reference)
36 columns/line for specified characters
36.
18 . 12. 9 columnsselect iv e
260 steps/second
0. 2m m for X-axis and 0.2mrn for Y-ax is
52mmisecond (X and Y axis)
73mm/second for 45° direction
One ex amp le or print ed cha ra cter
Sl•tt
0.2
1 .2
....... ..-. ...... ..... __
,; -;f
, 0
,
,
,
,
,
,
,
I) Character size: I.OS x 1.45. forline width of02S
2) Character-to.character spacing: 1.2±1(1,\
3) Line spacing: 2.4±10%
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3. Effective range of plotting
1) Plotting directio'n
In reference wiih the carriage moving direction, the rightward direction is de termined to be
X-axis(+) and tlte leftward direction is determined to be X-axis(- ).
2) Effective range of plotting
X-axis: 43.2mrn, 216 steps
Y-axis: Any range as determined by software.
5 mnl
3) Accumulative e1tror in V <1xis
y
- x ...... · --1-- ...-x
y
216 neps
Effeccive range of
plotting
43.2 mm
58mm
9 .8mm
As the paper is fed by means of fri ction with rubber for the Y-axis, there may arise a slight
deviation, which should be within a range
of ± 3mm as measured in the following manner,
provided that specific paperguide
is in use. Example -Programme
l0:G RAP H :
GLCURSO R <8,0>
20:""0R A=J TO 20
30:RLJNE -<0, - 200
)-(5, 0) -(0 , 200
) - (5, 0)
40:"l£X T A
50 :RL JN E -<0, - 185
)- ( - 2 05, 0) - (0,
- J 5)
60 : RL JN E - (2 ! 0,0>
-< 0,- i 5> - C- 215
' 0)
4. Recording paper and ball point pens
'C!l: FJ ~ O
2
[Recording paper)
Kind:
Din1ens ions: Ordinary paper Paper width: 58 ~ mm (2· 1/4")
Core size: 70mm (2·3( 4"), max.
Paper length:
About 55m (for the core size of 70mm)
Recommended pap er: High quality paper of about 45kg with thickness of 65 to 80 micron.
(1,
000 sheets of 788 x I,09J mm paper equals to 45kg.)
[Ball poi nt pen)
Color:
Si ze:
Kind of ink:
Life:
(Weight: equivalent to
52. 3 g/m2)
Black, blue, red, green
5¢ x23 .3
Water color
25 0m ( 820 ft .) or more
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5. Ele ctr ical ch aracteristics
5 ~ 1 . Input/Output temi na ls
Name
B
Co l or position sensor A
D
X motor c
B
A
Motor cornr non
D
Y motor c
B
A
(+) B
Magnet
(-) A
No.
I
2
3
4
s
6
7
8
9
10
I I
12
13
Circ11 it diagram
0
~
I
0
0
0
f-:\.
:::(. M
~
"
<>
,.....
:{ M\.
0 A
.J
0
:
115 00 0I
Pen down upon current supply to the magnet in above polarit y.
5-2. Magn et
J. Voltag e:
2. Type:
3.
DC resistance:
4. Peak current:
4.85 ±0 .6SV
Self:holding magnet
SUbl 0% (20°C)
About I. IA (2o•c, 4.85V)
About
l. 4A (0°C. S.SV, wo rst case)
5-3. Motor (260 steps/second)
Item X-axis Y-axis
l Voltage 5.85V±0.65V
2 Type 4-phase steppingmotor
(2 phase excitation)
3
DC resisiance (A l) 3on± 10% 25!2±10%
4 Peak current
JA~ Abt. O.l6A Abt. 0.19A
(per phase) (A 3) Ab t. 0.23A Abt. 0.27A
5 Average current (A4) Abt. 0.12A Abt. 0.13A
(per phase) (AS) Abt. 0.16A Abt. 0.18A
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Condition
o-so·c
2o•c
(resistance per phase)
20°c 4.s sv
ifc , S.SV, (worst 'case)
20 ° c. 4. ssv
0°C, 5.SV, (worst• Case)
3

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5 -4 . Power coniumption
Pr int patter Scale Vo ltage Current Power
consptn
(mA) consptn (W)
ACll 64 character set S=O
4.8V soo-5 50
2.4 -2 .6
ACll 64 character set (excluding CR) S=J 4.8V
400-450
1.9 -2 .2
ACII 64 character set S=J
4. 2V 3 40- 370
1.4 -1.6
ACJI
64 character set S=J
5. 8V 500-580
2.9 - 3.4
"5" printed in 5 columns S=l 4. 8V 385 1.8
Paper feed
act i on -4.
8V 260 1.2
X·axis forward and ba ckward -4.
8V
1 80
0.9
45° line drawing
(L=O) 4. 8V
490
2.4
45° dot drawing (L= l) 4. 8V 790 3.8
5-5. Color position se n si ng sw i tch
I. Operatingvoltage: DC 2 4V , max.
2. Operatingcurrent: I
OOmA , max.
3. Contact resistance:
150m~, rnax.
6 . D
urabi l ity
No .
Item and test met hod Test item Specification
I Life
6.5 million charac ters ASCII 64 character set I. Appearance Life: 6.5million
are cont inuously pr i nted in the minimum cha raciers
scale (S=
O). At any time during the test 2. Print quality Must be good.
(ic. 1,
2, 4, and 6.5 million character s),
appearance, operat i ng conditions. and print
quality are
te ·sted.
2 Pen life
Continuous operational t est is carried o ut I. lnk li fe Musi be able to draw
in the print mode shown in Attached mo re than 250 mete rs.
Drawing 4-1, v.•ith ane\v pen in use.
3. MECHANISM AND OPERAT I ON
The printer roughly consists of six blocks - a frame, X-Oir ection drive, Y-direction drive, pen dr ive
mechanism,
co lo r ch a.ngc mechanism, and pen take-o-ut mechanism sections. An explanation of these
blocks will be given below.
1. F
rame Sect i on
111e frame section has a side plate (r ight ), side plate (left) , holding plate, and paper guide. The
various mechanis
ms arc mou nted both inside and outs ide. The lower edge of the fr ame is bent in the
shape
of th e Jetter Lan d acts as a mountingleg.
2. X Dr i ve Mechan i sm Section
4
The principal el ements of the X-dire cti on dr iv e mechanism ar e the X steppi ng motor , id le gear.
bobbin
gea1, pulley support base (left), pulley supp-O ri base (right), slider un it, wire, etc.
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Bobbin Ge ar
Pulley Support
Base (Lettt
Idle Gear
Stepping Motor
Slide Un it
Fig. 1
• Step Angle and Minimum Movement Pitch
'
---
0
Pulley SUJpport
B<:ite (A. ht)
Wire
The reduction ratio between the stepping motor and bobbin gear is I :9.01 , and for each stepping
motor pulse (18°/ 360 ), the slider unit, that is, penXdirection movement, is 0.2mm. The motive
power
ls transmitted to the bobbin gear and slider unit by a wire, and the wire tension is main-
t;iined by a coil spring.
3. Y Drive Mechanism (Paper Feed Mechanism) Section
The Y·direction drive mechanism consists of the Y stepping motor , idl e gear, rubber roller uni t, paper
holding roller (fight) and paper holding roller (left). The reduction ratio between the Y stepping
motor (called the Y mot or below) and rubber r olle r gea r is l :7.8 6. As is the case wi ththeXdir ec-
tion, the rubber roller movement per pulse of the Y motor, that is , the Y diteclion movement
quantity of the recording paper,
is 0.2mm.
Paper Holding Roller
(Left)
Fig. 2 5
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4. Pen DriveMechani sm Section
The pen drive mechanism, namely the pen up·down mechanism, comprises a self-holding type
electromagnet,
eject ion lev er, roller lever, and baU-point pens. Pen up and down directions are as
shown below.
• Pen-up State
The pen retracts when the elec tr om agnet is enc rg ized for 5 ms against the actuator spring, and
held by a permanent magnet e
ve n after the current is cut off after the initial 5ms.
Rubber Roller
'\
'
• Pen-down State
Actuator Pin
Pe rmanent Magnet
Actuator Rotation Center
Fig. 3
P tn
R II r Lev er
Recordi ng Paper
Ejection leve r
Coupl ing Leve .,.
Actuator Pin
Actuator Rotation Otnter
Fig. 4.
From its pen-up state the pen descends when a current is impressed to t he electromagnet for 5
ms in an opposite direction to that used for pen retraction. After 5ms, the pen-down state will
be main!ained by !he actuator spr in g force.
5. Co l or Change Mechani sm Section
6
The color ch ange mechanism sect io n consists of the X-direction d ri ve mechanism, a pen holder and
holder stopper,
both in !he slider unit, and projeccions inside the holding plates. The operating
principles are explained below.
Si de Plate (Lett >
Pu lley
Fig. 5
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Holder Stopper
Wire
r--"T -T--,
I ' I o
~- -.I I
I
I
·=~ "f._ ''l"E :>- I
I 1 J I ·r
I '-'+-re-' :
I I I I
I I I
I I I
I I I
I I I
l I I I
J
~~~~~~~:=:= :=:=:=~L~ -~-~J-~ --~
I I
i--:' ' --+-- ~ - ·, .__=-_j
Fig. 5
To operate the color change mechanism, first, t he slider is moved to the area a·l in Figure 6 (45
pulses to the left from the
or igin). Then, the holder stopper in the sl ider contacts the projection on
the holding plate, and the wedge section of the holder stopper slips out of the pen holde r, which
frees
it to ro tate. Next, by repeating the movement of the X motor for 30 pulses each in direction
A and
to the left, the pen (I) in Figure 5 changes to pen (2). The spring moves the holder stopper to
th e right until it returns to the or igin. If then enters the pen ho ld er groove. The pen holde is then
fixed,
an d printing is rea dy.
6. Pen Ejection Mechanism
Th e pen ejection mechanism c-onsists <.>tily of !he pen ejection lever 11131 is mounted on the side plate
(r ight). The slider unit is moved fully to the side plate (ri gh t) and is stopped ill order to change the
pen. Push the pen ejection lever towards you, and
th e pen w ill eject.
P en Ejection LO'i'er.
Sli det Unit Fig. 6
7
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4. DI SASSEMBLY AND REASSEMBLY
1. Disassembly Remove the following parts from the frame in the sequence $hown below.
Disassembly Part
No . Part to
be Removed Point for Disassembly
Sequence
I 4-1 Electromagnet Uni t •
Disassemble af ter remov ing
2·4
Wire Uni t
cr oss-recessed pan head machi ne
6 -1
PenTake·out Bar Un it screws (SP2 x 3) and (SP2 .3 x
2-7
Pull ey Suppon Base (Right) Un it 3), and sleeves (2 -5 ).
3-2 Y Idle
Gear
• Note -brass fittings may
slide
3-5 Paper Holding Roller Support off.(Don
't lose)
Plate (Right) Unit
2 7-1 Motor Cover
• Lift
up the motor c over (7-1)
se ction covering th e c ross-
r ecesse d pan head machine
sc rews (S P2 .3 x 3) which hold
the motor.
•
Remove the entire ntotor cover
(7-1) by inserting a flat-blade
screwdriver in the paper guide
as shown in the diagram below.
J0
~
0 L
[!:!]
3 3-3 Rubber Roller Uni t •
Push the rubber roller un it
bea r ing to the left and remove
from the right si de of the rubber
roller unit (3-3)
as it comes off
the
frame unit (I· I) .
4 3-1 Y Mot or Unit
• Suction solder in thejunction
7-4 l'lat W afe r Assembl y section
of the two printed
2-3 Bobbin Uni t circuit boards.
2 -2 X Id le Uni t •
Note - brass fittings may slide
3-4 Paper Holding Roller Suppon off.(Don't lose)
Plate (Left)Unit
s 2-1 XMotor Unit
2-6 Pulley Support Base (Left) Unit • Push
in plastic tabs from inside
2-8 Slider Shaft (A)
of flame.
2-9 S lid er Shaft (B)
4-5
Sli der Unit
4- 2 Ejection
LA:vcr Shaft Unit
4-3 Ejection
Lever
4- 7
Co lor Cha n ge
<1-6
Reed Switch Unit
7 -2
Rubber Bu shing
7-3
Rubber Pad
8 Do
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2'. Reasse m bly
Reassembly can be completed most efficiently by referring to the reassembly sequence and precau·
lionsshown below.
Reassembly
Parts Symbol Pa r ts to be Reassembl ed Precautions for Reassembly
Sequence
2
3
3·l
SP2.5 x 3
2-1
SP2.5 x 3
X Mot or Unit
Cros s-recessed Pan Head Machine
Screws
Y Motor Unit
Cross-recessed Pan Head
Machine
Sc rews
7-3 Ru bber Pad
7-2 Rubbe r Bu"1ting
2-6
3-3
WFl.7
3.5
2-2
REl.5
2·.l
Paper Holding RoUer Support
Rubber Roller Unit
Plain Washer
Paper HoldingRoUer Plate
(Right) Unit
X Idle Gear
Type EStopper Ring
Bobbin Gear
Un it
Move the0 bobbin gear by one tooth
and insert th e X idle gear .
/
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Recommend to en gage after mark ·
ing the tooth-tip and moving the
ge ar by one tooth.
9

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Reassembly PartsSymbol
Sequence Parts to
be Reasse.mbled
4
5
6
7
8
10
3·2
REl.5
7 -1
4- 2
4-3
RE2
6·1
6·2
RE l. 2
Y Idle ~ar
Type EStopper Ring
Motor Cover
Ejection [..ever Shaft Unit
Ejection Lever
Type EStopper Ring
Pen Take·out Lever Unit
Pen Takc·out Lev er Spring
Type EStopper Ring
4-7 Color Ch a nge bar.
SP !. 4 x 1.6 Cross-recessed Pan He ad
Machine Screws
Precau
lions for Reassembly
Insert the Y idle gear after moving
the paper
feed gca• by one tooth.
Recommend to engage after mark-
ingthe tooth tip and moving the
gear by one tooth.
Hang the motor cover by itssquare
hole on the hook (In the paper
gu ide Bon the rear of the frame
unit.
Insert the ejection lever shaft unit
into the frame through a bearing
hole and press in
the coupling lever
from outside the frame.
~~
,,j
"'
cC:i:/
~
,; ~ -
~
~
Screws may be coai t ed with lock
paint.
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Re assembly
Sequence
9
10
11
12
13
14
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P arts Symbol
45
2·8
2·9
RE-2
2-6
41
SP 2.5 x 3
Wf 2.S
7.4
46
SP2x3
2-4
2·5
Parts to be Reassembled
Sli
der Unit
Sli der Shaf t (A)
S lid er Shaft (B)
Type E Stop Ring
Pulley Support Base (left)
Unit
Elec tr omagnet Unit
C ro ~s.r cccsscd Pan Head
Machine Screws
Lock Washer
Flat Wafer Assembly
Reed Switch Unit
Cross·recessed Pan Head
Machine Screws
Pulley S
upport Base (Right}
Uni t
Wire Unit
Sleeve
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Precautions for Reassembly
Never bring anoth er magnet clo se
to the slider unit magnet. If you do
the magnet inside the slider unit
demagnetizes causing th e c olor
detection switch to operate
incorrec
tly.
Hang the elec tromatnet unit
actuator on the coupling lev er on
the ejection lever unit.
~~
.~ •"'
--~~~ ~
Mount so that open strok es are
0.6 mm. Clamping t or qu e, 3.S
kg<m.
Screw lock pa int coating.
Screw lock paint coat i ng .
Rotate the bobbin gear.
The reed switch must actuate when
the magnet at th e l eft edge of the
slider approaches th e closest reed
switch.
(Fig . I)
11

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Reassembly Parts S.ymbol
Sequence
12
Parts to be Reassembled Precautions for Rea ssembly
The wire must be stretched in the
order described below :
I) As shown in Fig. I, the spring
must be pressed against the side
plateusing
a ftnger tip with the
knot of the wire in alignment
with the side plate at point (A) .
2) Next , thread the leadingedge of
the wire through the puUey (B)
and the protrus ion (C).
3) As shown in Fig. 2. align the
slit (D) of the bobbin gear so
that ii should on a line drawn
between the bobbin ge ar shaft
(E) and th e idlergear shaft (F) .
® @
Fi g. 2
4) Wind th e wire arou nd the
bobbin gear for one and half a
tum , the n th r ead ii through
slits.
Fig. 3
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Reassembly PartsSymbol
Sequence Parts
to be Reassembly
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Precautions for Reassembly
5) Wind tlte wire around the pullc
(G), then thread through the
hole in theside plate.
6) Now, set the slider unit to a
distance of 5mm from the right
(magnet side), then thread th e
wire through the hole in the
slider unit as shown in Fig. 4.
s ..
Fig. 4
Hold
th e wire at the point (A)
and stretch the wire towar
ds t he
direction (H), then adjust the
location of the slider unit so
that the distance be tw een the
side plate and the slider unit
should become about Smm.
© ®
13

14
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Reassembly Parts Symbol
Sequence
SP2 x 3
SP 2.3 x 3
S·I
S-2
5.3
S-4
Parts to be Reassembled
Phillips
he ad, small, pan head
screw
Cross-recessed Pan H
ead Ma chine
Screw
llall·point Pen(lllack)
Dall ·point Pen (lllu e)
8a ll·point Pen (Green)
llall·point Pen (Red)
Precautions
for Reassembly
7) Apply the wire to the pulley
support
bracket (riglit) (2·7),
then thread the wire Utrough
the hole in the si de plate,
again.
8) Next, insen the wire into the
sleeve, thread through the
spring h ook loop, then thread
the wire thro ugh the sleeve.
9) Pull the one of the wire (i) until
the tension of I60grams is on
the spring(a bout 2mm of spring
elongation),
then set the sleeve
using the long
nose pliers.
IO)Check a proper movement of
the slider.
~
~
~
Securing of the bobbin gear with
the wire.
Adjust
Ute relative positions of the
wire and slider so that the drawing
line
in the X·direction will be at
the center of the paperguide.
Screw lock paint coating.
Move
the slider to t he leftedge.
JI
JI ZLT\ -A
0
o ~
~
t7' "7
]
lnsert the pen t ip at the tip of the
pen return springand push the rear
section.
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Reassembly
Sequence PartsSymbol Paris
to be Reassembled Precautions for Reassembly
Rotate the rotary
ho lder in the
direction
of arrow A and insert
the pen. Mount the pen color posi-
lion making lhe magnel for the
reed switch as the reference.
Rotation
co
~ re cti on
Magnet
Jg'D
\ 1:J I
\J LI
Ct
- ~
C2
15
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5. REPAIR AND MAINTENANCE
1. Handling Precautions
1l Carry ing Printer
(I) Carry the printer by hold·
ing it i_n the directions
shown by iJ .Carrying
the printer in the
direction will cause various
troubles.
(2) The printer may be carried
by holding
on to the upper
face
of the motor cover
and paper guide. However,
do not apply strong
pressure to it.
21 Sections where Pressure Should
Not be Applicd:
Goar
~ l
...___,
Color
Chan g in gb
ar-'
Ir
Motor Cover
::,;:
I;
J
Slider Un it
Gear
I
magnet
Elec1ro i'
(I) Do not touch the slider unit except when taking a pen ou t. Particularly. never apply pressure
in the direction of rotation.
(2) Do no t touch the wire. The pulley may come off .
(3) Do not touch the color changing bar. When bent, color changing cannot be accomplished.
31 Sections Not to be Touched
(I) No shaftshould be touched with bare hands.
(2) Do not touch the pen return spring.
(3) Do not touch the rotary holder except when the slider is positi()ned at U1e le ft edge of the
frame and a pen is 1r1oun!ed .
(4) Do not touch the slide r.
41 Sections Where Magnetic Substances Should be l<ept Away
(I) Do not p la .ce a magnetic substance or powder, a permanent magnet, or an electromagnet
close to the permanent magnet
of the co lor position detector.
(2) Astrong care earth magnet is used in the electromagnet unit.
51 Other;
Be very careful not to drop the pen or in any way bend ii. When the i11k is exhausted, hold by
the tail plug section and shake i t.
2. Maintenance
16
Perform repairs and maintenance as shown below to maintain U1 e initial print er quality as long as
possible.
11 Cleaning
Clean the printer and remove paper dust, dirt. etc. periodically (about every Uuee months or
after usi
ng 5 rolls of recording paper).
(Points for Cleaning)
(I) Paper dust, dirt, etc. should be vacuumed up .
(Use an electric vacuum cleaner).
(2) Use alcohol or benzene when removing stains. Thinner, trichloroethylene and ketone solvent
may damage the plastic parts and should
not be use d.
(3) Grease any places where there is no grease or where it is not suffic ie nt. (Do not grease unless
greasing is :requir
ed . Do not use a lubrican't except that which is specified. Refer to Item 6.
OilingStandard.)
21 Record ing Paper
(I)
Use recording paper recommended in Paragraph 24 of the specifications.
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3 .. Repairs
The printer has three repair ~ evel s (A , B, and C) taking into account the difficulty of after sale
services and repairs. Persons in char ge of repairs are asked to mak e repairs aftercomparing their own
technical proficienc ie s and th.e required repairlevel.
1) Repair Levels
Level A: A general knowledge of the pr inciples and constructi on of the printer and some degree
of skill are required. l ~ xpe ri ence or a high degree of skill is not require d.
Level B: A good knowle d!ge of the principles and co nstruction of the printer and the skill to
disassernble the printer and to use measu ri ng in st ruments, jigs, and tools accociated
with di sa sse mbly and reassembly arc required.This level requires experience in making
repairs.
Level C: A hi gh degree of special knowledge regarding the principles and construction o f the
prin
ter are required along with the ability to use measuring instruments, jigs, and tools
assoc ia ted with the printer. ln-liepth experience ~ ri d sk ill in repair work are required.
2) Repair Procedure
W11en a fault oc curs, carefully observe and check the type of fai lu re and the condilions sur-
rounding it. Find out th e cause and ma ke rep ai" after checking the location of 1he fault, refer-
ring to the "Repair Guide."
(I) "Phenomenon"': Determine the trouble phenomenon from 1his column.
(2) "Conditi
on" : Compare the tr ouble with this column and verify whetherit coincides.
(3) "Cause ": Causes bassed on the condition of the trouble are listed. Verify the ca use .
Use t
he repair lev el described above when making repairs after fully
consider ing the repa ir level.
(4) "Locationsand Methods
of Checking":
TI1e col umn lists where to check fo. r trouble and by whal method.Check
according to th e instructions in this column and loca te the trouble.
(5) "Repair Method" : Repair the trouble according to t
he instructions described in this col umn.
If the same phenomenon or conditions cxi s1 after making repairs, check
th e other it ems in the cause co Ju mn a nd r nake nece . ssary re pair s.
3) Repair Tools
• Screwdrivers (Precision Screwd riv ers)
Phillips Type 4. equiv al e nt to No. 000.
PltiUips
Type 5,equivalent to N o. 00 .
Flat-blade Type 5
• ET Holders E-Ri ng
ET 2
ET
1.5
ET 1.2
• Radio pliers. or recd pliers
• r·w ee zers
• Solderingiron
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