Midmark 409-005, 409-006, 409-004, 409-007 Parts Manual

409

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7

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MIDMARK

Pediatric

409

Service and

-004 thru -007

Pediatric Examination Table

Serial Number Prefixes:
RG, RH, RJ, RK, RL,
RM, & V

Parts Manual

409-004 & 409-005

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

409-006 & 409-007

409

-00
thru

-00

SF-1561 Part No. 004-0070-00 Rev. K (4/04/08)

TABLE OF CONTENTS

TABLE OF CONTENTS

Section/Paragraph Page Section/Paragraph Page

IMPORTANT INSTRUCTIONS

General Safety Instructions ...........................................ii

Safety Alert Symbols .....................................................ii

Warranty Instructions .................................................. ii

SECTION I GENERAL INFORMATION

1.1 Scope of Manual .......................................... 1-1

1.2 How to Use Manual ...................................... 1-1

1.3 Description of 409 Pediatric Examination

Table.......................................................... 1-1

1.4 Specifications ............................................... 1-3

1.5 Standard Torque Specifications.................... 1-5

1.6 Parts Replacement Ordering........................ 1-5

1.7 Special Tools ................................................ 1-7

SECTION II TESTING AND TROUBLESHOOTING

2.1 Operational Test (Models 409-004 and

409-005).................................................... 2-1

2.2 Operational Test (Models 409-006 and

409-007).................................................... 2-3

2.3 Troubleshooting Procedures (Models

409-004 and 409-005)............................... 2-4

2.4 Troubleshooting Procedures (Models

409-006 and 409-007)............................... 2-6

SECTION III SCHEDULED MAINTENANCE

3.1 Scheduled Maintenance (Models

409-004 and 409-005).............................. 3-1

3.2 Scheduled Maintenance (Models

409-006 and 409-007).............................. 3-2

SECTION IV MAINTENANCE/SERVICE
INSTRUCTIONS

4.1 Introduction................................................... 4-1

4.2 Beam Scale Components Removal /

Installation (Mechanical Scale Only)....... 4-1

4.3 Zero Balance Adjustment (Mechanical

Scale Only)............................................... 4-2

4.4 Beam Scale Calibration Check

(Mechanical Scale Only)......................... 4-3

4.5 Platform Components Removal /
Installation or Table Top Locking

Mechanism Access (Mechanical

Scale Only)............................................... 4-4

4.6 Linear Scale Alignment (All Models)........... 4-6

4.7 Digital Display Removal / Installation

(Digital Scale Only) ................................. 4-6

4.8 Platform Scale Components / Load Cell

Assembly Access (Digital Scale

Only)......................................................... 4-7

4.9 Platform Load Cell Removal / Installation

(Digital Scale Only)................................. 4-9

4.10 Platform Assembly Removal / Installation

(Digital Scale Only)................................. 4-9

4.11 Display Board Assembly Removal /

Installation (Digital Sca le Only)............. 4-10

4.12 Digital Scale Calibration............................. 4-12

4.13 Digital Scale Gravitational Compensation

Adjustment.............................................. 4-13

4.14 Display Board Assembly Mode Setting

Procedure (Digital Scale Only) ............. 4-13

4.15 AUTO Power Off / Continuous Use

Selection Procedure (Digital Scale

Only)....................................................... 4-14

SECTION V SCHEMATICS AND DIAGRAMS

None.

SECTION VI PARTS LIST

6.1 Introduction ................................................ 6-1

6.2 Description of Columns................................ 6-1

6.3 Torque Specifications And Important

Assembly Notes........................................ 6-1

Pictorial Index [s/n prefix “JS”] ..................... 6-2

Pictorial Index [s/n prefix “PP”]..................... 6-3

Cabinet Assembly ....................................... 6-4

Upper Wrap [s/n prefix “JS”]:

w/ Mechanical Scale............................... 6-5.*

w/o Mechanical Scale............................. 6-6.*

Table Top Assembly [s/n prefix “JS”]:

w/ Mechanical Scale................................. 6-7

w/o Mechanical Scale............................... 6-8

Upper Wrap [s/n prefix “PP”] ....................... 6-9

Table Top Assembly [s/n prefix “PP”]:

w/ Digital Scale ....................................... 6-10

w/o Digital Scale..................................... 6-11

Tanita Scale Components ........................ 6-12.*

Weight Calibration...................................... 6-13

Key And Lock Assembly............................. 6-14

COMMENTS ............................................................. 7-1

FAX ORDER FORM.................................................. 7-2

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

© Midmark Corporation 1998 SF-1561 Page i Printed in U.S.A.

Rev. 8/02

TABLE OF CONTENTS

General Safety Instructions

Safety First: The primary concern of Midmark Cor­poration is that this table is maintained with the safety

of the patient and staff in mind. To assure that services
and repairs are completed safely and correctly, proceed
as follows:

(1) Read this entire manual before performing any

services or repairs on this table.

(2) Be sure you understand the instructions con-

tained in this manual before attempting to ser­vice or repair this table.

Safety Alert Symbols

Throughout this manual are safety alert symbols that
call attention to particular procedures. These items are

used as follows:

DANGER

A DANGER is used for an imminently

hazardous operating procedure, prac­tice, or condition which, if not correctly followe d,
will result in loss of life or serious personal
injury.

NOTE

A NOTE is used to amplify an operating procedure,
practice or condition.

Warranty Instructions

Refer to the Midmark “Limited Warranty” printed in the
Installation and Operation Manual for warranty informa­tion. Failure to follow the guidelines listed below will
void the warranty and/or render the 409 Pediatric
Examination Table unsafe for operation.

• In the event of a malfunction, do not attempt to
operate the table until necessary repairs have been
made.

• Do not attempt to disassemble table, replace mal­functioning or damaged components, or perform
adjustments unless you are one of Midmark’s
authorized service technicians.

• Do not substitute parts of another manufacturer
when replacing inoperative or damaged compo­nents. Use only Midmark replacement parts.

WARNING

A WARNING is used for a potentially

hazardous operating procedure, prac­tice, or condition which, if not correctly followe d,
could result in loss of life or serious personal
injury.

CAUTION

A CAUTION is used for a potentially haz-

ardous operating procedure, practice, or
condition which, if not correctly followed, could result
in minor or moderate injury. It may also be used to
alert against unsafe practices.

EQUIPMENT ALERT

An EQUIPMENT ALERT is used for an

imminently or potentially hazardous oper­ating procedure, practice, or condition which, if not
correctly followed, will or could result in serious, mod­erate, or minor damage to unit.

© Midmark Corporation 1998 SF-1561 Page ii Printed in U.S.A.

SECTION I

GENERAL INFORMATION

SECTION I

GENERAL INFORMATION

1.1 Scope of Manual

This manual contains detailed troubleshooting, sched­uled maintenance, maintenance, and service instruc­tions for the 409 Pediatric Exam Table. This manual is
intended to be used by Midmark’s authorized service
technicians.

1.2 How to Use Manual

A. Manual Use When Performing Scheduled Mainte-

nance.

(1) Perform inspections and services listed in

Scheduled Maintenance Chart (Refer to
para 3.1 or 3.2).

(2) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in
accordance with maintenance / service instruc­tions (Refer to para 4.1).

B. Manual Use When Table Is Malfunctioning And

Cause Is Unknown.

(1) Perform an operational test on Table (Refer to

para 2.1 or 2.2).

(2) Perform troubleshooting procedures listed in

Troubleshooting Guide (Refer to para 2.3 or

2.4).

(3) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in
accordance with maintenance / service instruc­tions (Refer to para 4.1).

1.3 Description of 409 Pediatric Exam
Table

A. General Description (See Figure 1-1).

The 409 Pediatric Examination Table is a table designed
to be used by physicians and office staff to conduct rou­tine medical examinations and measurements on pedi­atric patients weighing between 7.0 to 40.0 lbs (3.2 to

18.1 kg) and measuring 15.0 to 36.0 in. (38.1 to 91.4

cm) in length. Listed below are the four different models
available:

409-004............. Exam Table with mechanical scale

409-005............. Exam Table without mechanical scale

409-006............. Exam Table with digital scale

409-007............. Exam Table without digital scale

The major serviceable components of the 409-004 table
(table with mechanical scale) are the beam scale com­ponents which include the “0” balance screw & weight,
platform components, linear scale, and table top locking
mechanism. The major serviceable component of the
409-005 table (table without mechanical scale) is the
linear scale (See Figure 1-1).

The major serviceable components of the 409-006 table
(table with digital scale) are the digital display (which
includes display board assembly), platform components
(which includes load cell assembly), and linear scale.
The major serviceable component of the 409-007 table
(table without digital scale) is the linear scale (See Fig­ure 1-1).

C. Manual Use When Damaged Component Is Known.

(1) Replace or adjust component in accordance

with maintenance / service instructions (Refer
to para 4.1).

© Midmark Corporation 1998 SF-1561 Page 1-1 Printed in U.S.A.

Rev. 3/01

SECTION I
GENERAL INFORMATION

409-004 and 409-005

409-006 and 409-007

© Midmark Corporation 1998 SF-1561 Page 1-2 Printed in U.S.A.

Rev. 3/01

Figure 1-1. Major Components

SECTION I

GENERAL INFORMATION

1.4 Specifications

Factual data for the 409 Pediatric Examination Table is
provided in Table 1-1. Also, see Figure 1-2.

Table 1-1. Specifications

Description Data

Patient Weight (409-004/409-005):

Maximum For Examination.................. 40 lbs (18.1 kg)

Maximum For Weighing ...................... 40 lbs (18.1 kg)

Patient Weight (409-006/409-007):

Maximum For Examination.................. 40 lbs (18.1 kg)

Maximum For Weighing ...................... 40 lbs (18.1 kg)

Weight of 409-004 Unit:

Boxed Weight ............................. 242.0 lbs (109.8 kgs)

Unboxed Weight ............................188.0 lbs (85.3 kgs)

Weight of 409-005 Unit:

Boxed Weight .............................. 215.0 lbs (97.5 kgs)

Unboxed Weight ............................161.0 lbs (73.0 kgs)

Weight of 409-006 Unit:

Boxed Weight ............................. 242.0 lbs (109.8 kgs)

Unboxed Weight ............................188.0 lbs (85.3 kgs)

Weight of 409-007 Unit:

Boxed Weight .............................. 215.0 lbs (97.5 kgs)

Unboxed Weight ............................161.0 lbs (73.0 kgs)

Overall Depth (w/o scale)...................... 21.5 (54.6 cm)

Overall Width ..............................41.875 in. (106.4 cm)

Beam Scale Accuracy (409-004):

up to 18.0 lbs (8.2 kg) is: ...................... ±1 oz. (28.3 g)

between 18-40 lbs (8.2 - 18.1 kg) is: ... ± 2 oz. (56.6.g)

over 40.0 lbs (18.1 kg) is:................... ± 4 oz. (113.3 g)

Beam Scale

Readout Increments (409-004):..................... minimum

increment is 1 oz. (20 g)

Digital Scale Accuracy (409-006):

0 - 11 lbs (0 - 5 kg) is: ........................... ±1.75 oz. (50 g)

11 - 40 lbs (5 - 18 kg) is: ....................... ±3.5 oz. (100 g)

[Serial #’s PP1143 thru present only register to 40 lbs]

40 - 100 lbs (18 - 45 kg) is: ................. ±5.25 oz. (150 g)

Digital Scale Readout
Minimum Increments (409-006):

Serial #’s: PP1000 thru PP1142 .............0.2 lb (0.09 kg)

Serial #’s: PP1143 thru present ..................1 oz (.01 kg)

Digital Scale Specifications:

Type Measurement ........ Electrical Resistance Method

Power Source ..................... Six LR6 Alkali Batteries or

AC Adapter - 9V, 300mA or more

center minus plug

Battery Life........................ 100 Hours Continuous Use

Power Consumption.................... 0.25 Watts maximum

Display ...................... LCD with 1 in. (25mm) numerals

Shipping Carton: ........... 45.0 in. "L" x 28.75 in. "W" x

43.0 in. "H"

Linear Scale

Accuracy:......................................... ± 1/8 in. (0.32 cm)

(114.3 cm x 73.0 cm x 109.2 cm)

Linear Scale Readout

Dimensions (409-004/409-005):

Minimum Increments: ...........................1/8 in. (0.5 cm)

Upholstered Top ..............20.75 in. wide x 42.0 in. long

(52.7 cm wide x 106.7 cm long)

Certifications:..................................ISO-9001 Certified

Table Top Work Height ................... 35.75 in. (97.2 cm)

Overall Height (w/scale) .................... 54 in. (137.2 cm)

Overall Height (w/o scale) .......... 40.625 in. (103.2 cm)

Overall Depth (w/scale) .................... 25.5 in. (64.8 cm)

Overall Depth (w/o scale) .................... 21.75 (55.2 cm)

Overall Width.................................. 42.0 in. (106.7 cm)

Dimensions (409-006/409-007):

Upholstered Top ..........20.75 in. wide x 41.875 in. long

(52.7 cm wide x 106.4 cm long)

Table Top Work Height ..................... 36.0 in. (91.4 cm)

Overall Height (w/scale) ............... 51.25 in. (130.2 cm)

Overall Height (w/o scale) ............ 40.75 in. (103.5 cm)

Overall Depth (w/scale) .................... 22.5 in. (57.1 cm)

© Midmark Corporation 1998 SF-1561 Page 1-3 Printed in U.S.A.

Rev. 6/07

SECTION I
GENERAL INFORMATION

409-004 and 409-005

409-006 and 409-007

© Midmark Corporation 1998 SF-1561 Page 1-4 Printed in U.S.A.

Rev. 3/01

Figure 1-2. Dimensions

SECTION I
GENERAL INFORMATION

1.5 Standard Torque Specifications

The following standard torque specifications in Table
1-2 apply to the various hardware used on the units
unless otherwise listed elsewhere in service procedures
or parts illustrations:

Table 1-2. Torque Specifications

Hardwa r e S ize Torque Values

#6 ............................11 to 21 inch / lbs. (1.2 to 2.3 N•M)

#8 ............................20 to 30 inch / lbs. (2.2 to 3.3 N•M)

#10 ..........................32 to 42 inch / lbs. (3.6 to 4.8 N•M)

1/4" .........................75 to 85 inch / lbs. (8.5 to 9.6 N•M)

5/16" .....................18 to 22 foot / lbs. (24.4 to 29.8 N•M)

3/8" .......................31 to 35 foot / lbs. (42.0 to 47.5 N•M)

1/2” .......................50 to 60 foot / lbs. (67.8 to 81.4 N•M)

1.6 Parts Replacement Ordering

If a part replacement is required, order the part directly
from the factory as follows:

(1) Refer to Figure 1-3 to determine the location of

the model number and serial number of the
table and record this data.

(2) Refer to the Parts List to determine the item

numbers of the parts, part numbers of the
parts, descriptions of the parts, and quantities
of parts needed and record this data (Refer to
para 6.1).

NOTE

Ask the Purchasing Department of the company that
owns the unit for this information. Otherwise, this
information may be obtained from the dealer that sold
the unit.

(3) Determine the installation date of the table and

record this data.

(4) Call Midmark with the recorded information and

ask for the Medical Products Technical Services
Department. See back cover of this manual for
the phone number or use the Fax Order Form
(See page 7-2 for Fax Order Form).

© Midmark Corporation 1998 SF-1561 Page 1-5 Printed in U.S.A.

Rev. 3/01

SECTION I
GENERAL INFORMATION

409-004 and 409-005

409-006 and 409-007

Figure 1-3. Model Number / Serial Number Location

© Midmark Corporation 1998 SF-1561 Page 1-6 Printed in U.S.A.

Rev. 3/01

SECTION I
GENERAL INFORMATION

1.7 Special Tools

the table, how to obtain the special tools, and the pur­pose of each special tool.

Table 1-3 lists all of the special tools needed to repair

Table 1-3. Special Tool List

Description of Special Tool

Calibrated Test Weight
(included with & applies only to
409-004 table)

200kg or 440 lb Calibrated Test
Weight (applies to 409-006
table)

50 lb Calibrated Test Weight Commercially Available Any Type Used to check digital scale calibration.

Soldering iron & solder Commercially Available Any Type Used to desolder/solder two battery leads to dis-

Torque Wrench Commercially Available Any Type Used to tighten nuts or screws to specified values.

Manufacturer’s

Name / Address / Phone

Midmark Corporation
60 Vista Drive
Versailles, Ohio 45380
937-526-3662

Commercially Available Any Type Used to calibrate digital scale.

Manufacturer’s

Part N umbe r

050-4086-10 Used to calibration of the beam scale. A calibrated

test weight is included with each table from the fac­tory. The test weight should be hanging on the
right rear of the table on a hook.

play board assembly when it is being replaced.

Purpose of Special Tool

© Midmark Corporation 1998 SF-1561 Page 1-7 Printed in U.S.A.

Rev. 3/01

SECTION I
GENERAL INFORMATION

© Midmark Corporation 1998 SF-1561 Page 1-8 Printed in U.S.A.

Rev. 3/01

TESTING AND TROUBLESHOOTING

SECTION II

TESTING AND TROUBLES HOOTING

SECTION II

2.1 Operational Test (Models 409-004
and 409-005) (See Figure 2-1)

In order to effectively diagnose a malfunction of the 409­004 and 409-005 Pediatric Examination Table, it may be

necessary to perform an operational test as follows:

WARNING

Refer to the Operator Manual for com-

plete instructions on operating the
table. Failure to do so could result in personal
injury.

NOTE

The Operational Test, for the most part, only
describes what should happen when the table is
operated. If the table does something other than
described, a problem has been discovered. Refer to
the Troubleshooting Guide to determine the cause of
the problem and its correction.

Also, this operational test procedure is based on units
that have a beam scale; some units do not have a
beam scale - For these units skip to step 14.

(6) Remove any items from table top. Set large

poise weight to zero, making sure it is seated in
notch and set small poise weight to zero, mak­ing sure small poise weight is pushed firmly
against shoulder of beam.

(7) Observe. The beam pointer should balance in

center of trig square, indicating scale is zeroed.

NOTE

Use the calibrated test weight which should be hang­ing on a storage hook on the right rear of the table.
The test weight will have a label indicating the cali­brated weight of the test weight.

(8) Place the calibrated test weight on center of

upholstered table top.

(9) Using the large poise weight and small poise

weight, set beam scale to a setting which is
equal to calibrated test weight.

(10) Observe. The beam pointer should center in

the trig square indicating beam scale is within
tolerance.

(1) Move table top locking handle to LOCK posi-

tion. Attempt to move table top (See
Figure 2-1).

(2) Observe. The table top should be firmly locked

into a stationary position.

(3) Move table top locking handle to UNLOCK posi-

tion.

(4) Observe. The table top should not be locked

into a stationary position anymore. Look
between table top and base. There should be
approximately a 1/4 in. (6.35 mm) gap between
locking rails and bottom of table top; at the very
least, there should not be any contact.

(5) Push down on center of table top a few times to

align and exercise all internal scale parts.

(11) If beam scale does not center, adjust the small

poise weight and/ or large poise weight as nec­essary to center beam pointer in trig square.

(12) Determine how much beam scale reading dif-

fers from weight of calibrated test weight. The
allowable tolerance is ±1 oz. (28.3 g).

(13) Hang the calibrated test weight on its storage

hook, located on right rear of table.

(14) Remove any items from table top and then

move table top locking handle to LOCK posi­tion.

(15) Extend linear scale fully. Using a carpenter

square, check to see if the linear scale is
square with back of table top when scale is fully
extended.

© Midmark Corporation 1998 SF-1561 Page 2-1 Printed in U.S.A.

Rev. 3/01

SECTION II
TESTING AND TROUBLESHOOTING

LARGE POISE

WEIGHT

SMALL POISE

WEIGHT

LOCKING RAILS

(LEFT SIDE SHOWN)

TRIG

SQUARE

BEAM

POINTER

LINEAR

SCALE

CARPENTERS

SQUARE

TABLE

TOP

409

MIDMARK

Pediatric

Figure 2-1. Operational Test (Models 409-004 & 409-005)

TABLE TOP

LOCK/UNLOCK

HANDLE

MA483100

© Midmark Corporation 1998 SF-1561 Page 2-2 Printed in U.S.A.

Rev. 3/01

SECTION II

TESTING AND TROUBLESHOOTING

2.2 Operational Test (Models 409-006
and 409-007) (See Figure 2-2)

In order to effectively diagnose a malfunction of the 409­006 and 409-007 Pediatric Examination Table, it may be

necessary to perform an operational test as follows:

WARNING

Refer to the Operator Manual for com-

plete instructions on operating the
table. Failure to do so could result in personal
injury.

25 lb (11.3 kg)
TEST WEIGHT

ON / ZERO
BUTTON

NOTE

The Operational Test, for the most part, only
describes what should happen when the table is
operated. If the table does something other than
described, a problem has been discovered. Refer to
the Troubleshooting Guide to determine the cause of
the problem and its correction.

Also, this operational test procedure is based on units
that have a digital scale; some units do not have a
digital scale - For these units skip to step 7.

LINEAR

SCALE

TABLE

TOP

MIDMARK

Figure 2-2. Operational Test (Models 409-006 & 409-007)

(1) Press ON / ZERO button to turn digital scale

ON.

CARPENTERS

SQUARE

© Midmark Corporation 1998 SF-1561 Page 2-3 Printed in U.S.A.

Rev. 6/07

SECTION II

TESTING AND TROUBLESHOOTING

(2) Observe. The display should flash

momentarily and then the display should dis­play

Make sure all LCD segments illuminate prop­erly.

(3) Check all functions of digital display (Reference

TANITA BWB-800 operating Instructions Man­ual).

(4) Press KG / LB button until display is set to LB.

NOTE

Use the calibrated test weight to perform the follow­ing procedure.

(6) Determine how much digital scale reading dif-

fers from weight of calibrated test weight. The
allowable tolerance is ±5.25 oz. (150 g).

(7) Remove calibrated test weight and then press

ON / ZERO to turn digital scale OFF.

(8) Extend linear scale fully. Using a carpenter

square, check to see if the linear scale is
square with back of table top when scale is fully
extended.

2.3 Troubleshooting Procedures
(Applies to 409-004 and 409-005)

Table 2-1 is a Troubleshooting Guide which is used to
determine the cause of the malfunction. This guide cov­ers problems with scale platform components, beam
scale components, and linear scale components which
the model 409-004 has. The model 409-005 does not
have a scale platform or beam scale; it only has a linear
scale. For this model, only use the portion of the guide
which is applicable.

(5) Place a calibrated 25 lb (11.3 kg) test weight on

center of table top.

Table 2-1. Troubleshooting Guide (Models 409-004 & 409-005)

Problem Symptom Probable Cause Check Correction

Table top will not lock into
stationary position prop­erly.

Weight scale does not
measure weight accurately.

When table top locking
handle is moved to the
LOCK position, the table
top is not locked into sta­tionary position (can still be
moved).

The beam pointer will not
center when the large and
small poise weights are set
to zero.

The measured weight of
the patient is inaccurate.

Table top locking mechanism
has bent, broken, or missing
components.

Platform has worn “V” bear­ings or a broken pivot.

The beam scale is not
zeroed.

Paper roll is interfering with
table top.

Locking rails are not releas­ing properly when table top
locking handle is moved to
the UNLOCK position.

Check for bent, broken,
or missing components.

Check for worn “V” bear­ings or a broken pivot.

Check to see if the beam
pointer centers when the
large and small poise
weights are set to zero.

Check to see if paper roll
is in contact with bottom
of table top.

Check for bent or missing
components in table top
locking mechanism. See
why locking rails are
“hanging up”.

Replace any bent, broken, or
missing components on the
table top locking mechanism.
Refer to para 4.5 to gain
access.

Replace platform assembly
and beam scale assembly (are
a factory matched unit). Refer
to para 4.2 and 4.5.

If beam pointer does not cen­ter when the large and small
poise weights are set to zero,
perform a zero balance adjust­ment. Refer to para 4.3.

Reduce thickness of paper roll
or remove paper roll.

Repair or replace any bent,
broken, or missing compo­nents on the table top locking
mechanism. Refer to para 4.5
to gain access.

© Midmark Corporation 1998 SF-1561 Page 2-4 Printed in U.S.A.

Rev. 6/07

Table 2-1. Troubleshooting Guide (Models 409-004 & 409-005) - Continued

Problem Symptom Probable Cause Check Correctio n

Linear scale seems to be
inaccurate.

Beam pointer does not
move at all during weigh­ing.

Arm of linear scale is not
perpendicular to uphol­stered top when extended
or height measurements
seem inaccurate.

TESTING AND TROUBLESHOOTING

Table is not level. Check to see if table top

Beam pointer is touching the
the side of the trig square
during its travel.

Patient is not being cen­tered on the table top before
being weighed.

Platform is rocking exces­sively or touches its base at
any corner as a result of a
worn or broken “V” bearing
or a broken pivot.

Steel connecting rod which
connects beam scale and
weight platform is rubbing
against inside of scale pillar.

Beam scale is out of calibra­tion.

Connection rod is incor­rectly connected or has
become disconnected from
linkage rods.

Scale label is not positioned
properly.

Linear scale is out of align­ment (not square with back
of table top).

is level.

Press down on the center
of the table top while
observing the beam
pointer.

Check to see if table
operator is positioning
patient properly.

Check for worn or broken
“V” bearings or a broken
pivot.

Check to see if all wire
hooks of steel connecting
rod face toward the right
side of the table.

Check accuracy of scale
with the calibrated test
weight.

Check connection rod
connections.

Use tape measure to
check if scale label is
positioned properly.

Use a carpenter square
to check squareness of
linear scale with respect
to the back of table top.

SECTION II

Adjust four leveling screws,
located on base of table, to
level table.

Replace platform assembly
and beam scale assembly (are
a factory matched unit). Refer
to para 4.2 and 4.5.

Inform operator of correct
patient positioning for weigh­ing.

Replace platform assembly
and beam scale assembly (are
a factory matched unit). Refer
to para 4.2 and 4.5.

Position all wire hooks so they
face the right side of table.
Refer to para 4.2.

Check the calibration of the
beam scale using the cali­brated test weight. Refer to
para 4.4. If scale is out of cali­bration, replace platform
assembly and beam scale
assembly (are a factory
matched unit). Refer to para

4.2 and 4.5.

Connect disconnected con­nection rod. Make sure all
other linkage is correctly posi­tioned and connected to con­nection rod.

Reposition scale label or if
necessary, replace with new
scale label.

Align linear scale. Refer to
para 4.6.

© Midmark Corporation 1998 SF-1561 Page 2-5 Printed in U.S.A.

Rev. 3/01

SECTION II

TESTING AND TROUBLESHOOTING

2.4 Troubleshooting Procedures
(Applies to 409-006 and 409-007)

Table 2-2 is a Troubleshooting Guide which is used to
determine the cause of the malfunction. This guide cov­ers problems with scale platform components and digi­tal display which the model 409-006 has. The model

Table 2-2. Troubleshooting Guide (Models 409-006 & 409-007)

Problem Symptom Probable Cause Check Correctio n

Digital Scale is malfunc­tioning.

Nothing is displayed on
digital display when ON /
ZERO switch is pressed.

Digital display acts errati­cally.

Digital display works, but
measured weight stays at
zero even with weight on
table top.

The measured weight of
the patient is inaccurate.

AC adapter is malfunctioning
or disconnected (applies
only if AC adapter is being
used instead of batteries).

Batteries are too weak to
operate digital scale (applies
only if batteries are being
used instead of AC adapter).

Display board assembly is
malfunctioning.

The mode setting for the dig­ital display has been lost due
to a power surge or replace­ment of display board
assembly.

Display connector (connects
to underside of digital dis­play) is loose or discon­nected from digital display.

Wiring / connector between
display board assembly and
platform scale load cell is
disconnected or torn.

Platform scale load cell
assembly is malfunctioning.

Paper roll is interfering with
table top.

Table is not level. Check to see if table top

Table is located where
excessive vibration occurs.

409-007 does not have a scale platform or digital dis­play; it only has a linear scale. For this model, only use
the portion of the guide which is applicable.

Check the connection of
the AC adapter jack to
the AC jack port and the
connection of AC adaptor
plug to the wall outlet.

Replace suspect batter­ies with known working
batteries or use an AC
adapter.

Replace suspect display
board assembly with
known working display
board assembly.

Check mode setting for
unit.

Check if display connec­tor is loose or discon­nected.

Check for disconnected,
torn, or damaged con­nector / wiring.

Replace suspect platform
scale load cell with
known working platform
scale load cell.

Check to see if paper roll
is in contact with bottom
of table top.

is level.

Check for signs of exces­sive vibration at table
location.

Correct bad connection. If
necessary, replace AC
adapter (Call TANITA Corpora­tion @847-640-9241 to order
parts /accessories).

Replace six used batteries
with six new LR6 Alkali batter­ies (“AA” Batteries).

Replace display board assem­bly (Call TANITA Cor poration
@847-640-9241 to order parts
/accessories).

Adjust mode setting for digital
scale to code:H8830. This is
the type of scale used on this
table. Refer to para 4.14.

Make sure display connector
is properly connected to digital
display.

Connect loose connector or
replace any torn or damaged
connector / wiring. (Call TAN­ITA Corporation @847-640­9241 to order parts /accesso­ries.) Refer to para 4.8.

Replace platform scale load
cell. Refer to para 4.9. (Call
TANITA Corporation @847­640-9241 to order parts /
accessories.)

Reduce thickness of paper roll
or remove paper roll.

Adjust four leveling screws,
located on base of table, to
level table.

Accurate measurement may
be impossible if the product is
used where there is excessive
vibration. Try using the table
at another location.

© Midmark Corporation 1998 SF-1561 Page 2-6 Printed in U.S.A.

Rev. 3/01

Table 2-2. Troubleshooting Guide (Models 409-006 & 409-007) - Continued

Problem Symptom Probable Cause Check Correctio n

Linear scale seems to be
inaccurate.

Arm of linear scale is not
perpendicular to uphol­stered top when extended
or height measurements
seem inaccurate.

TESTING AND TROUBLESHOOTING

Digital scale is out of calibra­tion.

Display board assembly is
malfunctioning.

Wiring / connector between
display board assembly and
platform scale regulator is
disconnected or torn.

Platform scale load cell
assembly is malfunctioning.

Scale label is not positioned
properly.

Linear scale is out of align­ment (not square with back
of table top).

Check accuracy of digital
scale with a calibrated 50
lb (22.7 kg) test weight.
The allowable tolerance

± 5.25 oz. (150 g).

is

Replace suspect display
board assembly with
known working display
board assembly.

Check for disconnected,
torn, or damaged con­nector / wiring.

Replace suspect platform
scale load cell with
known working platform
scale load cell.

Use tape measure to
check if scale label is
positioned properly.

Use a carpenter square
to check squareness of
linear scale with respect
to the back of table top.

SECTION II

Check the calibration of the
digital scale using the cali­brated test weight. If digital
scale is out of calibration, cali­brate digital scale. Refer to
para 4.12.

Replace display board assem­bly. Refer to para 4.11. (Call
TANITA Corporation @847­640-9241 to order parts /
accessories.)

Connect loose connector or
replace any torn or damaged
connector / wiring. (Call TAN­ITA Corporation @847-640­9241 to order parts /accesso­ries.) Refer to para 4.8.

Replace platform scale load
cell. Refer to para 4.9. (Call
TANITA Corporation @847­640-9241 to order parts /
accessories.)

Reposition scale label or if
necessary, replace with new
scale label.

Align linear scale. Refer to
para 4.6.

© Midmark Corporation 1998 SF-1561 Page 2-7 Printed in U.S.A.

Rev. 3/01