Sony UP-897MD User manual

SONTY.
VIDEO GRAPHIC PRINTER
UP-897MD
SERVICE MANUAL
1st Edition

ASE
COVIaAy Wild, D-EARA TCT. —_
BERN, TCOVIaY WVICMMANEREPRT, BR, EHREST CREPKEK,
ASBMWIZDEMS TEMBOET.
FERRI SED, U-PARL —lLD VES eRHBOATHH<S FEW.
A\ WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
A\ WARNUNG
Die Anleitung ist nur fur qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dirfen nur von qualifiziertem Fachpersonal ausgefiihrt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben
Wartungsarbeiten dirfen nur von Personen ausgefuhrt werden, die eine spezielle Befahigung
dazu besitzen. ,
4\ AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de |’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi a moins d’étre qualifié pour en effectuer d’autres.
Pour toute réparation faire appel 4 une personne compétente uniquement.
UP-897MD

Table of Contents
Manual Structure
Purpose of this manual ..........ccccsssscseccssssecessssssetseseeststesesseacseessaees 3
Related manuals
1. Service Overview
1-1. Board Location ......ci.sescsssesscscsesessecsseesscscesseverssecceanses 1-1
1-2. Main Parts Location ....ccccessccesssssssssssscesecsssessesessssees 1-1
1-3. Removing/Installing the Cabinet ....... te sssecesesssseseeeee 1-1
1-3-1. TOP COVED sisssrssssccsocssenscnecgicnstoscssccnsosponsscetsnessesoavers 1-1
1-3-2. Front Panel Subassembly ............ccsssessseecseseeseeees 1-2
1-3-3. Rear Panel ::cctsvssscscceotasctsivssastcsssesseedonsavessetacorssestncses 1-2
1-4. Replacing the Main Parts... we 1-3
1-4-1. Switching Regulator/DC Fan .........cessssessseersesees 1-3
1-4-2. Mechanical Deck Assembly .............sccsssssssseesesseees 1-3
1-4-3. Thermal Head ....... scenes
1-4-4, Stepping Motor/DC Motor
1-4-5, Cam Shaft Assembly .........cccssscsssscscssseeessseseees
1-4-6. Pinch Arm Assembly . wee L-7
1-4-7. Platen Roller ........cssscsssssssscsesssseseesecnsssssssreenssseese 1-7
1-4-8. Timing Belt: ..icccacsseccseassssescevosncaccdeceacctssoaceconscereseuns 1-8
1-5. Procedure Required for Replacement ..........ccssssessessesee 1-9
1-6. Unleaded Solder
2. Electrical Alignment
2-1. Procedure before and after Adjustment ............ ccc 2-1
2-1-1. Procedure of Printing the User Setting Record
(Before AdjUStMent) 0... ceseeessssetseeeeeressesseeees 2-1
2-1-2, User Setting Check Procedure
(After Adjustment) occ. cssecsesssecerseseesesestens 2-1
2-1-3. Factory Setting .......ccccescssssscsssnscessererressesserenses 2-1
2-2. Calibration and Electrical Conductivity Check .............. 2-2
2-3. Brightness and Contrast Adjustment ...........ccssessseesesees 2-3
2-4. Head Voltage Adjustment 0.0... secesctcesersessteessreesees 2-4
2-5. . Initialization of Print Count History 00.00... eeeseseeeeeees 2-5
2-6. Firmware Version Upgrade .........cccessscsssssssesssesesseseeees 2-6
UP-897MD
3. Circuit Description
3-1. System Control BIOCK ........cecesesssscereesscseseeseserscssrsenes 3-1
3-1-1. QOUtHithe wesicscsccscecads Rede sacsevde hoteles octane eds 3-1
3-1-2. Block Diagram of Electrical Block ........ cesses 3-1
3-2. Head/Mechanical Control Block ........ ee cesesseseeeeneeeeeee 3-1
3-2-1. Outline ........cceceeeeeeee
3-2-2. Platen Motor Control
3-2-3. Thermal Head UP/DOWN Control ...........ccccseseee 3-1
3-2-4. Monitoring of Door Sensor
3-2-5. Monitoring of Paper Sensor
3-2-6. Monitoring of Head Temperature Sensor.............. 3-2
3-2-7. Control of Head Fan Motor (for Head Cooling) ...3-2
3-2-8. Read Of Buttons sicv.sccccsstescasecosdectscessecdssssevestescetesess 3-3
3-3. Video Circuit BIOCK 0... eee esseecessceeseesessesesnereesesessenees 3-3
3-3-1. Outline 13 ieecieidackicd ei iaeanatete 3-3
3-3-2, Control of Video Circuit BIOCK 00... ceesesecessetene 3-3
3-3-3. Control of Brightness and Contrast ...........ssesee 3-3
3-3-4, A/D and D/A Conversion ......cssccesssecsssseeeseseseseree 3-4
3-3-5. Clock Generation Circuit BIOCK 0... csesesseseeeeeee 3-4
S45, USB Interface in cstessecccassccescscvccecssbeassstiacsetivccnseunesdieesvavenes 3-4
3-5. Thermal Head Bock .......ctessscsessesssesscsssesssesenscessssssserees 3-4
3-5-1. SOUCULING Saves scdeceiecisdacatesteasacdebcteasesseisbcstesieedicveels 3-4
3-5-2, Basic Operationyasss sascsessecsstdviceeccceseagedessestateessseaeuces 3-4
3-5-3. Temperature Correction .......ccscsssseseerssesessnseesevens 3-5
3-5-4, Correction of Resistor Count .......ccessesssssesseenenees 3-5
4. Troubleshooting
4-1. Print result is not SatisfactOry ........ssscscsseeseesscesseneeeenes 4-1
4-2. Print result density is too high or LOW ..........sssesssseseeeseees 4-2
4-3. Trouble of determining presence or absence of paper ....4-3
4-4. Thermal head UP/DOWN operation trouble .............004 4-3
4-5. Feed operation trouble
4-6. Trouble of determining door open/close ......... eee 4-4

5-1.
5-2.
5-3.
5-4.
5-5.
5-6.
5-7.
5-8.
5-10.
5-11.
5-12.
5-13.
5-14.
5-15.
5-16.
6-1.
6-3.
6-4.
7.
8.
Service Mode (Self-diagnosis Function)
Startup Procedure .........csssecssccsessecsseccsseseseecsstsesseesseseeeses
Service Mode Menu
Test.Pattert Primtins s.:..secececosncsucbsasicvsescosstpsceadssonseceneesens 5-1
Test Pattern Print Count ........cccscecsscssessscesssssreceseseseeoes 5-3
LCD Lighting Check 00.0... cssssesssesssesseseressesesesesceseesenees 5-3
LED Lighting Check ......ccscssscsscsesseeecrscensssssssssnscsnecs 5-4
Front Panel Volume Calibration oc. esssssseeestsseeeerons 5-4
LOwW-Pass Filter .......ecscsssesscesessesessssnsssnseessssssssssceseensene
Log Printing
Initialization of Setting
Switching of Continuous Setting (C) in Number
Of Printed Sheets (QTY) ....scscscsccssesseerssesterstscssesessenseseees 5-5
Switching of REMOTE capture timing... cseeseesees 5-5
Temperature Indication .......cecececeseseseeeerseeeeeceeeeeseeeereree DO
Switching of Toshiba Mode... 2 5-6
FEED Operation ......c..cessssescsssssescecscsoneseeesessseeesssneseeseees 5-6
Moen LOCK irs. ccticieteesscccssesdstasncsnctss stegestenestooucyncsapiaoansaaes 5-6
Spare Parts
Notes on Repair Parts .......cssscsssssesesesscsessssssscessscseneseees 6-1
Exploded Views
Electrical Parts List ........c.ssssscsssssssssessssssssseesersssoreseceseees 6-7
Supplied ACCESSOTIES .......scscsseressssesseeseeeeeseensereeeeeeenes 6-14
Block Diagram
Overall ice ceeds ccSescee sek ccecsvedesdanate tench eStcdudasveinsbsencsateathssviaiesees 7-1
Schematic Diagrams
9. Board Layouts
SE 76D sarc ictas beso acta es esi das bcos tavntiteitadaouctaecentaain 9-1
SUSU cercscsusasiedeattasssahedeecsduscpatdens dabacscix dvadsceuctdacensseaaneneen 9-1
MAWT3 2. csscsceascissciscesssssavasehascinnssedesicnnsesetcceebsiSiasensesteasase 9-2
UP-897MD

Manual Structure
Purpose of this manual
This manual is the service manual of Video Graphic Printer UP-897MD.
This manual describes the information on maintenance and the service information
such as service overview, electrical alignment, circuit description, troubleshooting,
and service mode (self-diagnosis function).
Related manuals
In addition to this “Service Manual”, this unit is provided with the manual below.
* “Operating Instruction” PDF (Included in the CD-ROM Supplied for
products.)
Part No.: 3-863-306-0X
These manuals describes the information required for the actual management and
operation of this unit.
“Semiconductor Pin Assignments” CD-ROM (Available on request)
This “Semiconductor Pin Assignments” CD-ROM allows you to search for
semiconductors used in B&P Company equipment.
Part number: 9-968-546-XX
UP-897MD 3

Section 1
Service Overview
1-1. Board Location 1-3. Removing/Installing the Cabinet
1-3-1. Top Cover
MA-132 board
SU-112 board 1. Remove the five M3 case securing screws, then
KY-572 board remove the top cover.
Top cover
ee M3 case
M3 case securing screw
g
securing
screws
&
0 l
O IS . 00°
A
iS)
ee
ie as board
Ne
SE-769 board
°°
M3 case
securing
1-2. Main Parts Location
Switching regulator
Thermal head
2. Attach the top cover in the reverse order.
UP-897MD
4-1

1-3-2. Front Panel Subassembly 1-3-3. Rear Panel
1. Remove the top cover. (Refer to Section 1-3-1.) 1. Remove the top cover. (Refer to Section 1-3-1.)
2. Release the lock arm of the mechanical deck block 2. Remove the three screws (PS3 X 6) and the screw
(bottom surface) in the direction of the arrow, then (BTP3 X 8), then remove the rear panel.
open the door panel.
3. Remove the two hooks in both directions of the
arrows.
4. Disconnect the flexible flat cable from the connector
(CN201) on the MA-132 board.
| > | | 5 J Rear pane)
3. Attach the rear panel in the reverse order of steps 1
and 2.
Door panel
5. After closing the door, remove the two screws and five
hooks, then remove the front panel subassembly.
Front panel subassembly
6. Attach the front panel subassembly in the reverse order
of steps 1 to 5.
-2 UP-897MD

1-4. Replacing the Main Parts
1-4-1. Switching Regulator/DC Fan
There are two types of DC fan mounting connectors.
Connect the harness of the DC fan for power supply to the
connector (CN601). The connector (CN603) is provided for
mounting the optional DC fan for cooling the thermal head.
1. Remove the top cover. (Refer to Section 1-3-1.)
2. Remove the front panel subassembly.
(Refer to Section 1-3-2.)
3. Remove the rear panel assembly.
(Refer to Section 1-3-3.)
4. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
5. Disconnect all harnesses and flexible flat cables from
the MA-132 board.
6. Remove the four screws (BVTT2.6 X 6), then remove
the MA-132 board, shield piate (analog) and earth
plate jack.
7. Remove the electric heating sheet (A), electric heating
sheet (B) and electric heating sheet (C) from the shield
plate (analog).
8. Remove the two screws (P3 X 10), then remove the DC fan.
9. Remove the four screws (PS3 X 6), then remove the
insulating sheet (MA) and switching regulator.
wags BVTT
2.6X6_-
rf
dee Earth plate
Electric heating ; jack
sheet
(C)
MA-132
board
Shield
plate
(analog)
Electric
heating
sheet (A)
Insulating A.
sheet (MA) PROS Os
Switching Ss
10. Attach the switching regulator in the reverse order of
steps 1 to 9.
UP-897MD
1-4-2. Mechanical Deck Assembly
— °
Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel subassembly.
(Refer to Section 1-3-2.)
Remove the switch rod retainer, then remove the
power switch rod.
Disconnect the three harnesses from the connectors
(CN204, CN205 and CN602) on the MA-132 board.
Disconnect the two flexible flat cables from the
connectors (CN206 and CN302) on the MA-132 board.
Remove the three screws, then remove the mechanical
deck assembly.
Power switch rod
Mechanical deck Flexible flat cables
assembly
& BVTT2.6 x6
Attach the mechanical deck assembly in the NE
order of steps | to 6. 7

1-4-3. Thermal Head
After replacing the thermal head, perform the head voltage
adjustment. For the adjustment procedure, refer to
Section 2-4,
1. Remove the top cover. (Refer to Section 1-3-1.)
2. Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the two screws (BVTT2.6 X 6), then remove
the MD top chassis and three head springs.
When removing the MD top chassis, be sure to remove
it slowly in the direction of the arrow A to prevent the
head springs from popping out.
5. Release the lock arm in the direction of the arrow, then
open the MD door chassis.
6. Remove the heat sink in the direction of the arrow B.
7. Remove the two screws (PSW3 X 8), then remove the
thermal head.
8. Disconnect the two flexible flat cables from the
thermal head.
BVTT MD top chassis
Head
springs
Heat sink ,
Flexible '
ia
flat cables
9. Attach the thermal head in the reverse order of steps 1
to 8.
When connecting the flexible flat cables, route them
under the cam shaft.
UP-897MD

1-4-4, Stepping Motor/DC Motor
Removal
1. Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the helical extension spring from the tension
arm assembly.
5. Remove the four screws (BVTT2.6 X 6), then remove
the stepping motor bracket.
6. Remove the two screws (PS3 X 4), then remove the
DC motor.
7. Remove the two screws (PS3 X 6), then remove the
stepping motor.
Tension arm assembly
Helical extension
UP-897MD
Installation
8. Attach the DC motor with the two screws.
9. Insert the head up lever shaft (L) into the hole [A] and
insert the speed reducing gear shaft (L) into the hole
[B], then attach with the three screws.
10. Hang the timing belt on the stepping motor gear.
Tension arm
Stepping assembly
motor gear
Speed reducing
gear shaft (L)
Stepping
motor
Stepping motor
eget biel : bracket ;
Head up lever shaft (L)
11. Assemble this unit in the reverse order of steps 1 to 4.

1-4-5. Cam Shaft Assembly
Removal
1.
2.
Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel assembly.
(Refer to Section 1-3-2.)
Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
Remove the thermal head. (Refer to Section 1-4-3.)
Remove the paper holder assembly.
(Refer to step 4 of Section 1-4-7.)
Remove the two bearings by rotating them in the
direction of the arrows A.
Remove the cam shaft assembly in the direction of the
arrow B.
Remove the cam (R), cam gear, cam (L), noise
reducing spring (30) and three parallel pins from the
cam shaft.
Cam gear
Cam (L)
Noise reducing
spring (30)
~) Cam shaft
RS Parallel pin
Cam (R)
9. Attach the cam shaft assembly in the reverse order of
steps 6 to 8.
10. Insert the portion A of noise reducing spring (30) into
the hole of chassis, then insert the portion B into the
hole of cam (L) by rotating it in the direction of the
arrow.
Noise reducing
Hole of cam (L) spring (30)
Portion B
Portion A
Chassis
Cam (L) Cam (R)
Cam gear
11. Assemble this unit in the reverse order of steps 1 to 5.
UP-897MD

1-4-6. Pinch Arm Assembly
When replacing the pinch arm subassembly, be extremely
careful not to touch it with bare hands or dirty gloves. If
the pinch arm subassembly is contaminated, clean it with
the ethyl alcohol.
1. Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the thermal head. (Refer to Section 1-4-3.)
5. Remove the paper holder assembly.
(Refer to step 4 of Section 1-4-7.)
6. Remove the three helical extension springs.
7. Remove the four bearings, then remove the door lock
assembly and pinch arm assembly in the direction of
the arrow.
8, Remove the pinch arm assembly from the door lock
assembly.
Pinch arm assembly
Door lock i }
assembly Be
Helical
4 extension
¢ asa Helical
e \ .. extension
Helical 5 !
=o |
spring
Bearings
9. Attach the pinch arm assembly in the reverse order of
steps 1 to 8.
After attaching the pinch arm assembly, clean it with
alcohol.
UP-897MD
1-4-7. Platen Roller
|
When replacing the platen roller, be extremely careful not
to touch it with bare hands or dirty gloves. If the roller is
contaminated, clean it with the ethyl alcohol.
1. Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the two screws, then remove the paper holder
assembly.
5. Remove the helical extension spring from the tension
arm assembly.
Paper holder assembly
e7
Helical
extension
Tension arm
assembly

6. Remove the two platen bearings by rotating them in
the direction of the arrow A.
7. Remove the platen roller in the direction shown by the
arrow B.
8. Remove the platen pulley and parallel pin from the
platen roller.
Platen pulley
Platen roller
9. Attach the platen roller in the reverse order of steps 1
to 8.
Timing
belt [A]
1-4-8. Timing Belt
1. Remove the top cover. (Refer to Section 1-3-1.)
2. Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the paper holder assembly.
(Refer to step 4 of Section 1-4-7.)
"5. Remove the two screws, then remove the oil damper.
6. Remove the damper gear.
7. Remove the door releasing spring from the hole of MD
door chassis, then remove the MD door chassis
assembly.
8. Remove the fulcrum spacer, then remove the door
releasing spring.
9. Pull out the fulcrum shaft from the MD door chassis
assembly in the direction of the arrow.
10. Remove the timing belt [A] and timing belt [B].
11. Attach the timing belt [A] and timing belt [B] in the
reverse order of steps 1 to 10.
1-8 UP-897MD

1-5. Procedure Required for Replacement
When replacing the following parts, perform each required process according to the table below. For the
procedure before and after performing the required process, refer to Section 2-1.
Parts Required process Reference
MA-132 board Firmware Version Upgrade Section 2-6
1C103 (MA-132 board)
KY-572 board Calibration and Electrical Conductivity Check Section 2-2
Switching regulator Head Voltage Adjustment Section 2-4
Thermal head
1-6. Unleaded Solder
Boards requiring use of unleaded solder are printed with a lead free mark (LF) indicating the solder
contains no lead.
(Caution: Some printed circuit boards may not come printed with the lead free mark due to their
particular size.)
[Mp] . LEAD FREE MARK
* Be sure to use the unleaded solder for the printed circuit board printed with the lead free mark.
* The unleaded solder melts at a temperature about 40 °C higher than the ordinary solder, therefore, it is
recommended to use the soldering iron having a temperature regulator.
* The ordinary soldering iron can be used but the iron tip has to be applied to the solder joint for a
slightly longer time. The printed pattern (copper foil) may peel away if the heated tip is applied for too
jong, so be careful.
UP-897MD

Section 2
Electrical Alignment
2-1. Procedure before and after
Adjustment
Print out the record of user setting before performing the
board replacement and adjustment. For the procedure of
printing out the record, refer to Section 2-1-1.
If the history record of user setting cannot be printed due to
the failure of this unit, reset the unit to the factory setting
after performing the board replacement and adjustment.
(Refer to Section 2-1-3.)
2-1-1. Procedure of Printing the User Setting
Record (Before Adjustment)
Print out the top menu record of setting (last setting) and
the list of all setting in the following procedure. After
completing the board replacement and adjustment, if the
setting is different from the contents of record printed
before adjustment, adjust the setting so that it becomes the
same as the setting before adjustment. Complete the
procedure by adjusting the setting to the contents of top
menu record.
Procedure
1. Turn on the [POWER]. “READY” is displayed on
LCD of this unit.
Press the button to open the door panel.
Set the thermal paper and close the door panel.
Press the jog dial.
Print out the record of the top menu (last setting)
displayed on LCD.
6. Rotate the jog dial to display “MENU” on LCD, then
press the jog dial.
All settings are printed on the thermal paper.
Be sure to keep the printed sheets (user setting)
because they are used as the reference to check the
setting after adjustment.
OY
UP-897MD
2-1-2. User Setting Check Procedure (After
Adjustment)
After completing the adjustment, reset this unit to the user
setting in the following procedure.
Procedure
1. Print out the setting of this unit.
(Refer to steps 1 to 6 of Section 2-1-1.)
2. Compare the setting list printed in step 1 with the
setting list (used as reference) printed in step 6 of
Section 2-1-1.
If there is any difference between the settings, adjust to
the reference setting using the jog dial.
If there is no difference, press the jog dial.
(Setting is completed.)
3. After adjusting the setting to the reference setting,
press the jog dial.
The adjusted setting is displayed on LCD.
4. Check that the contents of setting are correct, then
press the jog dial.
2-1-3. Factory Setting
Procedure
1. Turn on the while pressing the
button.
|
The beep sound is made immediately after turning on
the and after that again.
2. Release the button, then press the
button.
Press the button within 3 seconds after the
second beep sound in step 1 is made.
3. Check that this unit becomes the following state.
(Change to the factory setting)
(1) Backlight is off.
(2) Backlight lights in green.
(3) Backlight lights in red.
(4) Flashes two times automatically.
(5) Beep sound is made.
2-1

2-2. Calibration and Electrical
Conductivity Check
After replacing the KY-572 or MA-132 board, perform the
calibration of brightness and contrast volumes, and
perform the electrical conductivity check of each button.
1. Turn on the power while pressing the | PRINT | button
and button simultaneously.
The service mode starts.
Do not release the button and
button before the beep sound is made.
2. Press the jog dial two times.
“SVC” and then “PATAN?” are displayed on LCD in
order.
3. Rotate the jog dial to display “BR:CAL”.
4. Press the jog dial.
The calibration mode of brightness starts.
(1) Rotate the BRIGHT volume fully to the left in the
state that “BR:LEP” is displayed on LCD, then
press the jog dial.
(2) Rotate the jog dial to display “BR:RIG” and rotate
the BRIGHT volume fully to the right in the state
that “BR:RIG” is displayed on LCD, then press
the jog dial. ,
(3) Rotate the jog dial to display “BR:CEN” and
return the BRIGHT volume to the center in the
state that “BR:CEN” is displayed on LCD, then .
press the jog dial.
5. Rotate the jog dial to display “BACK”, then press the
jog dial.
6. Rotate the jog dial to display “CO:CAL”.
7. Press the jog dial.
The calibration mode of contrast starts.
(1) Rotate the CONT volume fully to the left in the
state that “CO:LEF’ is displayed on LCD, then
press the jog dial.
(2) Rotate the jog dial to display “CO:RIG” and rotate
the CONT volume fully to the right in the state
that “CO:RIG” is displayed on LCD, then press
the jog dial.
(3) Rotate the jog dial to display “CO:CEN” and
return the CONT volume to the center in the state
that “CO:CEN” is displayed on LCD, then press
the jog dial.
9.
10.
Check the electrical conductivity of the [FEED
button.
Press the button.
The error beep sound is made.
The electrical conductivity of other buttons can be
checked by calibration.
Check the electrical conductivity of the
button.
Press the button.
The front door is opened.
Turn off the power.
UP-897MD

2-3. Brightness and Contrast
Adjustment
After replacing the MA-132 board, perform the following
adjustment procedure.
Required equipment
* Monitor
* Digital voltmeter
* 10 step signal generator
(Equivalent to Tektronix 1410 (NTSC signal))
Connection
* Input signal: 10 step signal
* Connect this unit and the monitor.
Procedure
1. Reset this unit to the factory setting.
(Refer to Section 2-1-3.)
2. Rotate the jog dial to display “VOLME” on LCD, and
then press the button.
The adjustment mode starts.
3. Check that the CONTRAST volume and BRIGHT
volume are displayed at the center.
OK NG
4. An oblong-shaped frame is displayed almost at the
center of each step.
UP-897MD
5. Adjust with @RV503 and @RV504 while checking the
monitor until the specification is satisfied.
A E
12
09--14--18
B CD F GH
BSASD
(A=C is ideal.)
FSESH
(E=G is ideal.)
13 13
09--13--18
09--14--18
6. Check that “OK” is displayed at the bottom of the
screen.
2-3

After replacing the thermal head or the switching regulator, perform this adjustment.
Before starting the replacement, print out the stairstep test pattern which is used as the reference of
adjustment.
Before replacing the switching regulator, measure the voltage of TP302 on the MA-132 board and take a
note of the value.
State during adjustment Adjustment point
@RV201/ Switching
Do not release the buttons before checking that regulator
the backlight blinks.
* Input signal: None
* Set the |POWER| switch to ON while
pressing the [PRINT| and |COPY
buttons.
* When pressing the jog dial three times, a eee eee
“SVC”, “PATAN”, and “PA:CRS” are os
displayed in order. Rotate the jog dial in
this state to display ““PASTP” and press
the jog dial. Then, the stairstep test pattern
is printed.
Switching regulator
(right side)
UP-897MD
Front
Test pattern
After replacing the switching regulator
Adjust @RV201 so that the voltage becomes
the same as the voltage of TP302 measured
before adjustment.
Print out the stairstep test pattern after
adjustment and check that it is in the same level
as the test pattern printed before adjustment.
After replacing the head
Adjust @RV201 so that the stairstep test
pattern becomes the same level as the test
pattern printed before adjustment.
2-4 ¢ UP-897MD