Respironics bilichek User manual

Service Manual
www.respironics.com

BiliChek Service Manual 2
1014988
This BiliChek system is the subject of U. S. Patent #US patent 5.353.79 5,792, 49 5,86 ,421 5,924,981 6. 2.482
6, 45,5 2 6,192,734 and patents pending. BiliChek is a trademark of Respironics, Inc.

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Limited Warranty
Respironics warrants that the BiliChek® device shall be free from defects of workmanship and materials and will perform in
accordance with the product specifications for a period of one year from the date of sale by Respironics. If the product fails to
perform in accordance with the product specifications, Respironics will repair or replace -at its option - the defective material or
part. Respironics will pay customary freight charges from Respironics to the dealer location only. This warranty does not cover
damage caused by accident, misuse, abuse alteration, and other defects not related to materials or workmanship.
Respironics disclaims all liability for economic loss, loss of profits, overhead, or consequential damages which may be claimed
to arise from any sale or use of this product. ome states do not allow the exclusion or limitation of incidental or consequential
dames, so the above limitation or exclusion may not apply to you.
This warranty is given in lieu of all other express warranties. In addition, any implied warranty, including any warranty of
merchantability or fitness for the particular purpose, is limited to years. ome states do not allow limitations on how long an
implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may
also have other rights which vary from state to state.
The warranty for repairs is ninety days for labor and one year on the part(s) that was replaced.
To exercise your rights under this warranty, contact Respironics Inc. at 1-800-345-6443 (U and Canada only) or 1-724-387-
4000.
Visit Respironics Home Page on the World Wide Web: www.respironics.com

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Table of Contents
1.0 Symbols ............................................................. 5
2.0 Purpose of the Device ....................................... 6
3.0 Theory of Operation ......................................... 6
.0 Warnings and Precautions ............................... 8
5.0 Description of the BiliChek® System................ 9
6.0 System Specifications ....................................... 10
7.0 Functional Description ..................................... 11
8.0 Initial Set-up...................................................... 13
9.0 Set-up Mode ...................................................... 1
10.0 Operation of the Device .................................... 17
10.1Performing a Calibration.......................... 17
10.2Performing a Measurement ...................... 17
11.0 Troubleshooting ................................................ 18
11.1 Troubleshooting Guide ....................................... 18
11.2 Troubleshooting Flow Chart ...................... 20
11.3 Drawings and Schematics .......................... 22
11.3.1 Battery Pack Electrical Schematic ......... 22
11.3.2 Charger Base Exploded View Drawing . 23
11.3.3 Charger Base PCB Schematic ................ 2
11.3. Charger Base PCB Component Layout 28
11. HHU Error Code List................................. 29
12.0 Routine Operator Cleaning ................................... 33
13.0 Maintenance and Repair/Replacement ................ 33
13.1 HHU Measurement Bulb Replacement .... 33
13.2 Charger Base Repair .................................. 3
13.3 Hand Held Unit (HHU) Repair ................. 35
13. Power Supply Repair/Replacement .......... 35
13.5 Battery Pack Repair/Replacement ............ 35
1 .0 Software Upgrades ................................................. 35
1 .1 Upgrade Instructions .................................. 35
15.0 Customer Service and Product Support
Contact Information ............................................... 36

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1.0 Symbols
•Symbol for Attention. • Symbol for Battery Deep Discharge
See Instructions For Use and Recharge
•Symbol for Use ith • Symbol for battery Charging
•Symbol for Do Not Reuse • Symbol for Rechargeable Battery
Recycle Corporation
•Symbol for Use By • Symbol for Do Not Throw in Trash
•Symbol for Batch Code • Symbol for Nickel Cadmium Battery
•Symbol for Recycle • Symbol for Indoor Use
•Symbol for Serial Number • Symbol for Class B
•Symbol for Catalog Number • Symbol for Date of Manufacture Mfd:
•Symbol for Storage Conditions • Denotes this system is ETL Listed
and conforms to ANSI/UL STD.
2601. Certified to CAN/CSA C22.2
STD. NO. 601.1.
Table of Contents

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2.0 Purpose of the Device
The BiliChek®Non-Invasive Bilirubin Analyzer accurately
determines bilirubin levels in newborn patients without a
blood sample regardless of their skin color, gestational age,
or post-natal age. This product provides rapid, point-of-care
bilirubin measurements as a replacement for traditional
clinical chemistry methods. These results are achieved with
no trauma to the patient, no risk of infection, and potentially
reduced cost of monitoring serum bilirubin by minimizing the
use of hospital personnel and supplies.
3.0 Theory of Operation
The BiliChek wor s by directing white light into the s in of the
newborn and measuring the intensity of the specific wavelengths
which are returned. By nowing the spectral properties of the
components within the s in, one can subtract out the interfering
components and determine the concentration of bilirubin.
Each photon has a characteristic wavelength. As light enters
s in tissue it can collide with the structural components such as
collagen fibers. When a collision occurs, the photon loses energy
and direction of travel is changed. This is called a scattering
event. If enough of these scattering events occur, the photon
completely loses its energy and is absorbed. If a photon is
scattered such that it is re-emitted from the s in, it is reflected.
Photons with longer wavelengths (in the red region of the
spectrum) are scattered less than photons with shorter
wavelengths (in the blue region of the spectrum). This
phenomenon is called wavelength-dependent scattering and
explains why the s in appears red when you shine a bright light
through it. It is also one of the reasons why the optical properties
of the newborns s in changes with advancing gestational and
post-natal age. As the s in matures, it becomes thic er and
there is greater eratinization of the cell membranes which
increases the scattering of incident light.
Photons of specific wavelengths are also preferentially absorbed
by certain molecules. By plotting the absorption against the
wavelength one can visualize characteristic absorption spectra
of the particular molecules. For example, melanin has a near-
linear absorption spectrum in the visible spectrum and, li e the
scattering phenomenon, there is greater absorption of photons
with shorter wavelengths than in the red region of the spectrum.
Conversely, hemoglobin is a much more complicated absorber
which is compounded by the fact that oxyhemoglobin and
deoxyhemoglobin have different profiles. The pea absorption
of photons by bilirubin occurs at a wavelength of 460nm. This
is in the blue portion of the spectrum and is the reason why blue
lights are sometimes preferred for phototherapy. It is also in
the region of the spectrum at which hemoglobin absorption is
relatively low.

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The light reflected from the s in of neonates and collected by
the BiliChek Non-Invasive Bilirubin Analyzer is analyzed with
a highly sophisticated, proprietary algorithm to generate a serum
bilirubin measurement. The major s in components which
impact the spectral reflectance in newborns are (1) dermal
maturity, (2) melanin, (3) hemoglobin, and (4) bilirubin. The
intensity of the reflected light is converted to absorbance units,
Optical Density (OD), for analysis. The total OD at each
measured wavelength is equal to the sum of the component ODs.
This is represented mathematically as: OD TOTAL = OD DERM +
OD MEL +OD HEME +OD BILI By utilizing nown spectral
characteristics of each component, the contribution to the total
OD can be sequentially subtracted until bilirubin is all that is
remaining.
Theory of Operation (continued)
Non-Invasive Skin Spectral Components1
1 Jacques, S., Saidi, I., Ladner, A., and D. Oelberg. Developing and optical
fiber reflectance spectrometer to monitor bilirubinemia in meonates.
Each of these components have also been considered in the
development of the algorithm by which the BiliChek Non-
Invasive Bilirubin Analyzer computes the bilirubin measurement.
By measuring the intensity of the reflected light at more than
100 individual wavelength bands across the visible spectrum, a
spectral analysis can be performed. By normalizing against a
reference standard, the BiliCal® Individual Calibration tip, the
variations over time of the bulb and the photo-detectors are
eliminated. The pea absorption of the bilirubin is at
approximately 460nm as measured by subtracting the absorption
of the other components from the total s in absorption. This is
represented by the equation below.
OD BILI = OD TOTAL -OD MEL -OD HEME -OD DERM
The absorption of light by a molecule is proportional to its
concentration. Therefore, the absorption of bilirubin, as
calculated above, is proportional to the concentration of bilirubin
in the subcutaneous capillary beds and subcutaneous tissue. By
subtracting the contribution of the aforementioned components,
the bilirubin absorbance can be quantified and is correlated to
the laboratory total serum bilirubin levels.

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4.0 Warnings and Cautions
Caution: US Federal Law restricts this device to sale
by or on the order of a physician.
Warnings
 The BiliChek Hand-Held Unit is to be operated only in
conjunction with Respironics approved charger base,
battery pac s, power supply, and BiliCal Individual
Calibration Tips.
 Do not point at eyes while ta ing a measurement.
 Not suitable for use in the presence of a flammable
anesthetic mixture with air or with nitrous oxide.
 Do not use in areas of the s in with visible brusing.
 If you suspect BiliChek is interfering with other electronic
devices or vice versa, try the following measures to
correct it:
 Relocate the device until the interference stops.
 Move the BiliChek further away from the device.
 Plug the BiliChek power supply into a different
power outlet so that the BiliChek power supply
and the device are on different brea er or fuse
circuits.
 Do not puncture or incinerate the battery pac or dispose
of in a landfill. Batteries should be disposed of properly
according to local guidelines.
 Do not use outdoors or place in direct sunlight.
 The charger base unit (battery charger) should be plugged
into a properly grounded outlet. Do not operate with
damaged plug or cord.
Cautions
 The BiliCal Individual Calibration Tip should not be
exposed to light for extended periods of time. Keep
BiliCal Tip in pac age prior to use.
 If the product is dropped and frequent error messages
occur, it should be inspected for proper operation by an
authorized service representative.
 Do not immerse in water or other liquid.
 Do not let power cord hang over edge of counter or table
as this may pose a tripping hazard.
Contraindications
 Avoid using measurement sites when the following
conditions since they can produce erroneous results:
 Brusing
 Birthmar s
 Hematomas
 Excessive hairiness
 The BiliChek should not be used on patients who have
undergone an exchange transfusion.

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Quantity Description REF Number
2 Rechargeable Battery Packs B800-20
1 Charger Base B800-21
1 Power Supply (International B800-17
1 Power Supply (Domestic B800-16
1 Table Top Power Supply (100/250V 47/63Hz (optional B800-18
1 Bag of 10 Disposable Calibration Tips B800-10
1 Bag of 10 BilEclipse Phototherapy Protective Patch B800-12
1 User Instruction Manual B800-19
1 BiliChek Manual, International 1 B800-23
1 BiliChek Manual, International 2 B800-24
5.0 Description of the BiliChek® System
The BiliChek System (REF B809 or B801) consists of a hand-held unit (REF B800-13) and the following items:
10
Bili
Cal
™
BiliChekDisposableCalibrationTip
ReorderNumber: B800-10
2
-40°C-40°C
-40°C
60°C60°C
60°C
PatentNo.5,792,0495,860,421
5,924,9816,002,4826,226,541
andPatentsPending
Bag of 10
Bag of 10
BiliCal Disposable Calibration Tips

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6.0 System Specifications
BiliChek System:
♦Total Weight............................................... 974g
BiliChek Hand-Held Unit:
♦Weight (with battery pac ) ........................ 346g
♦Dimensions ................................................ See figure below
Battery Packs:
♦Type ........................................................... Ni-Cd
♦Dimensions
♦Height ............................................ 6.5cm
♦Depth ............................................. 4.8cm
♦Width ............................................. 3.5cm
♦Weight ............................................ 147g
♦Voltage ....................................................... 6V
♦Capacity ..................................................... 700mA Hrs
♦Measurements per full charge .................... Minimum 100
on a single
charge
♦Life Span .................................................... Minimum 1 year
♦Recharge Cycle .......................................... 4.6 hours
maximum
♦Discharge and Recharge Cycle .................. 9.2 hours
maximum
Charger Base:
♦Dimensions
♦Height ............................................ 7.6cm
♦Depth ............................................. 12.1cm
♦Width ............................................. 12.4cm
♦Weight ........................................................ 264g
Light Bulb:
♦Type ........................................................... Tungsten
♦Bulb Life .................................................... Minimum
measurements
Power Supply:
Domestic
♦Input ............................................... 120V, 60Hz
♦Output ............................................ 12 VDC, 0.75 Amp
nternational
♦Input ............................................... 100-240 VAC ± 10%
47-63 Hz
♦Output ............................................ 12 VDC, 2.75 Amp
Environmental Conditions for Use:
BiliChek System and BiliCal Individual Calibration Tip may
be stored at -40°C to 60°C (-40°F to 140°F) with
noncondensing relative humidity of 95% for a duration of at
least 24 hours.
BiliChek System and BiliCal Individual Calibration Tip are
intended to operate between temperatures of 5°C to 40°C
(41°F to 104°F) with 0% to 85% relative humidity without
condensation.

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7.0 Functional Description
BiliChek Hand-Held Unit (HHU):
The BiliChek Hand-Held Unit consists of the following func-
tional components:
1. TRIGGER button - The single button on the bottom of
the unit is called TRIGGER. It is used to initiate
calibration and patient measurement.
2. FUNCTION buttons - The two buttons on the top side
are FUNCTION buttons. The teal button on the left is
referred to as F1, and the gray button on the right as F2.
These are used to initiate non-routine functions such as
set-up, changing time and date etc.
3. BiliCal Individual Calibration Tip - This tip serves five
purposes:
a. device calibration before each patient measurement.
b. protection of the fiber-optic probe,
c. protection of the surface of the calibration material,
d. positioning aid to ensure proper placement of the
probe.
e. a clean surface for each patient measurement.
4. Display window - The display window shows the
bilirubin measurement, time and date, audio and
battery icons, Measurement Status Indicator (MSI) as
well as other system and error messages.
.
Charger Base:
The charge base contains two wells, A and B, which
recharge the battery pac in the BiliChek HHU and a spare
battery pac , respectively. The two small lights on the
front of the charger base (Battery Status Indicators or BSI)
indicate the operation of the battery charger and battery
charge status.
♦The BiliChek HHU is placed in the left hand well
A with the display window facing the operator.
♦The spare battery pac is placed in the right hand
well B with the latch up and facing the operator.
Caution: The BiliChek Hand-Held unit will not fit in well
B of the charger base. The battery pac can fit into well
A, but may not ma e correct connection to the charger
base.
(teal)
5. Battery Pac - Located in the bottom portion of the
handle,it provides the electrical energy to operate the
variouscomponents

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BiliCal
Individual
Calibration Tip
The green light will illuminate when the battery pac has
completely discharged and recharged. After both battery pac s
have been discharged, place the Deep Discharge switch in the
left ( ) position.
Caution: Leaving the Deep Discharge switch in the right
( ) position at all times will drain the battery pac before
every recharge. This will increase the duration of the recharg-
ing cycle and may reduce the overall life of the battery pac s.
NOTE: If the battery pac is moved or bumped during the
recharge phase of the deep discharge cycle, the deep discharge
cycle may begin again.
The Battery Status Indicator (BSI)
BS Color Battery Charger Mode Solutions
OFF
Green
Amber
Amber Flashing
Red Flashing
Battery pack not sensed in
well or charger base not
properly connected to power
supply.
Battery pack is fully charged.
Battery pack in the well is
charging but not ready for use.
Battery pack in the well is
deep discharging.
Bad battery pack in the
charger base.
Ensure battery pack is
properly seated in
well, check power
connections. ry
another battery if BSI
is still off. If BSI is
still off with second
battery, the Charger
base itself has
malfunctioned and
requires service.
Battery pack is ready
for use.
Continue charging
until BSI color is
green.
Continue discharging
and recharging until
BSI color is green.
NOTE: BSI will
become steady amber
when deep discharge
phase of cycle is
ended and charging is
in progress.
Replace the battery
pack. If the problem
is still present with a
new battery pack, the
charger base itself has
malfunctioned and
requires service.
In order to maintain optimal battery performance and battery
life, the battery packs should periodically be fully drained of
power. The charger base has the ability to manually drain the
battery by using the Charge/Deep Discharge switch located
on the bottom of the charger base. It is recommended by the
manufacturer to discharge each battery pack e ery month. To
drain a battery pack of power, place the Deep Discharge switch
in the right ( ) position and place the battery pack in the
charger base. The discharge/recharge cycle will take approxi-
mately 4.6 to 9.2 hours depending on the amount of the charge
in the battery pack.

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NOTE: When Deep Discharging the battery pack, the BSI
will blink amber during the discharge cycle, become constant
amber when recharging, and then green when fully charge.
NOTE: IF the BSI is flashing red when the battery pack is in
place, try resetting the battery pack in the charging well. If the
problem persists, try another battery pack. If the problem
continues, the charger base has malfunctioned and needs
ser ice.
8.0 Initial Set-Up
♦Visually inspect that all components are without
physical damage.
♦Plug the power cord into the power supply and then
into a grounded outlet.
♦Connect the power supply to the charger base by
inserting the plug into the socket on the rear of the
charger base. The Battery Status Indicator (BSI) lights
will flash red, green, amber, and then off (approxi
mately 1 second each) to indicate proper operation.
♦To install the battery pack, insert the bottom of the
battery pack into the bottom of the BiliChek
hand held unit and then rotate battery and snap it into
place.
♦To remo e the battery pack press the release latch at
the top of the battery pack and rotate it out of the
BiliChek hand-held unit.
Before the initial use, both battery packs should be fully
charged. After installing one of the battery packs into the
BiliChek hand-held unit, insert the hand-held unit into the
charger base well A, as shown on page 12 of this manual.
The indicator light will glow amber to indicate that the battery
pack is being charged (consult section 11.2 Troubleshooting
Flow Chart of this manual if the indicator is blinking red or
not illuminated). Now insert the auxiliary battery pack into
well B as shown on page 12 of this manual. The BSI will
glow amber to indicate that it is charging. Charge both battery
packs fully until green lights are displayed on both BISs
(page 12)

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9.0 Set-Up Mode
To initially set up the BiliChek® or to customize it for a spe-
cific institution, the following list of features can be changed
from the initial factory settings.
♦Select audio On/Off
♦Select the measurement units (mg/dl or µmol/L)
♦Set the automatic power-off time interval
(60 or 120 seconds)
♦Select the time format (12H or 24H)
♦Set the current time
♦Select the date format ( O/DA or DA/ O)
♦Set the current date
To Turn The Unit On
♦Install a fully charged battery pack. Ensure that the
battery pack is fully in place and latched. If EOO is
displayed, see Section 11.0 of this manual.
♦Press and release either F1 or F
♦The unit will turn on and boot up the system. During
this boot-up, the software checks the main software,
activates the measurement light bulb, Measurement
Status Indicator, and all LCD indicators. The current
software revision and current configuration are dis
played. The boot-up will end at the home screen dis
playing the last measurement, time and date, or display
an error code message.
NOTE: The BiliChek hand-held unit does not have an OFF
switch. The power will automatically shut off if it is left idle
for a specified period of time (60 or 1 0 Seconds).
(teal)

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To Access the User Set-Up Function
♦Press F1 and F at the same time, hold for one second,
(until the display changes) and then release to access
the set-up mode.
♦Use the F1 button to advance to the next item and the
F button to change the value of the current item.
♦To exit the set-up mode, press F1 and F at the same
time. All changes that were made will be saved and
displayed.
Audio On/Off
♦This function allows the user to turn the internal beeper
on or off.
♦Press F to toggle the speaker (beeper) on and off, and
F1 to accept your choice and advance to the next
function.
Setting the measurement units.
The display will read SET, and either mg/dL or µmol/L will
be displayed
NOTE: The default value is mg/dL.
♦Press F2 to toggle between values, and F1 to accept
your choice and advance to the next function.
Automatic power-off time interval
To conserve battery power, the unit has an automatic time-out
feature which turns the unit off if it is idle for a specified time
period.
NOTE: The default time is set at 12 seconds.
♦Press F2 to toggle between the 6 or 12 second
choices, and F1 to accept your choice and advance to
the next function.
Selecting the time format
The system will display time in either the 12 hour or 24 hour
format.
NOTE: The 12 hour format is the default setting.

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1014988
♦Press F2 to toggle between the formats, and F1 to
accept your choice and advance to setting the time.
Setting the time
After choosing the time format SET appears on the display
and the current clock time will be shown.
♦The hour digits will be flashing
♦Press F2 to scroll through the hours.
♦Press F1 to accept the hour and the minute digits will
begin flashing.
♦Press F2 to scroll through the minutes.
♦Press F1 to accept your choice and advance to the next
function.
♦Press F2 to toggle between the formats, and F1 to
accept and to advance to setting the date.
Setting the date
Depending on the format selected, the current month or day
digit will flash.
♦Press F2 to scroll through the choices.
♦Press F1 to accept and the next digit will begin
flashing.
♦Press F2 to scroll through the choices.
♦Press F1 to accept, and the first year digit will begin
flashing.
♦Press F2 to scroll through the digits.
♦Press F1 to accept and the second year digit will begin
flashing.
♦Press F2 to scroll the digits.
♦Press F1 to accept and the date will be saved and the
display will return to the home screen.
Selecting the date format
The unit will display the date in the Month/Day format or the
Day/Month format.
NOTE: the Month/Day format is the default setting.

BiliChek Service Manual 17
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10.0 Operation Of The Device
10.1 Performing A Calibration
♦Apply a new BiliCal  Individual Calibration Tip
to the unit.
♦Firmly press the BiliCal tip onto the BiliChek hand-
held unit to ensure proper seating of the Tip.
♦Press and release either F1 or F2.
The unit will perform its self test displaying all
LCD indicators and end at the home screen
♦Press and release the TRIGGER to start the
calibration cycle.
♦Three dashes (---) will flash in the display window
and the MSI will be amber if a BiliCal Tip is in
place, indicating the system is ready to calibrate. If
a BiliCal Tip is not in place the MSI will be red,
indicating that a new BiliCal tip should be applied.
♦Press and release the TRIGGER button. The dashed
lines will stop flashing indicating that the unit is
calibrating.
♦When calibration is complete the MSI will be
amber, you will hear a beep (if the audio is on), and
the display window will read " 5".
10.2 Performing A Measurement
♦After performing a calibration, peel the protective
cover from the BiliCal Individual Calibration Tip and
dispose of it.
♦Press and release the TRIGGER button. The unit is
now activated and ready to take a measurement.
Gently press the tip against the infants forehead. The
Measurement Status Indicator (MSI) will change
from amber to green when proper pressure is applied.
Do not continue to increase pressure, this will result in
an E 4 error message.
♦The display will read  5 and will stop blinking
when proper pressure has been applied. The measure
ment should take less than 2 seconds. At the end of the
measurement, a beep will sound (if audio is on) and
the display will change to " 4".
♦Take  5 readings by lifting and replacing the tip on
the forehead and pressing the TRIGGER button for
each measurement. The current measurement will be
indicated on the display ( 5- 4- 3- 2- 1)
♦When the 5 measurements are complete, a beep will
sound (if the audio is on) and the results will be dis
played with the current date and time.
♦Place the protective cover onto the BiliChek per
manufacturer's recommendation. (If the protective cap
is lost a BiliCal may be used to protect the fiberoptic
probe.)
♦The unit will turn off automatically.
NOTE: If an error message is displayed during calibration,
refer to section 11. of this manual for troubleshooting.
WARNING: It is critical to calibrate the unit and apply a new
BiliCal Individual Calibration Tip immediately prior to per-
forming a test. Inaccurate test results will occur if this is not
done. Removal of the tip after calibration and prior to a
patient measurement will result in loss of calibration. The
entire calibration sequence must be repeated with a new
calibration tip.

BiliChek Service Manual 18
1014988
11.0 Troubleshooting Guide
Display Window Indication Solution
E00 No user set-up information identified. Install a charged battery pack into the HHU. Press
F1 and F2 at the same time, hold for one second and then release. his
places the HHU in the Set-up mode. Enter settings specific to your
institution. See section 10.0 of this manual for Set-up Mode
instructions.
E01 Calibration measurement is unacceptable. Press and release F1 and F2 at the same time.
Ensure BiliCal tip is in place and retry the calibration. If the error
continues: 1. Place a fully charged Battery Pack in the HHU, install a
new BiliCal ip, and try again to calibrate several times.
2. Remove and rotate the BiliCal tip and retry. 3. Replace the measurement
light bulb (see Section 14.1 for instructions) and retry. If the error is still
present, the HHU has malfunctioned and requires service. Call
Respironics or your distributor.
E02 Patient measurement is unacceptable. Press and release F1 and F2 at the same time. ake another
measurement. If E02 occurs again, replace the BiliCal tip, repeat
calibration and retry the measurement. If the error is still present, the
HHU has malfunctioned and requires service. Call
Respironics or your distributor.
E03 BiliCal Individual Calibration ip removed Press and release F1 and F2 at the same time.
between calibration and measurement scan. Remove the BiliCal Individual Calibration ip.
Replace with a new tip and recalibrate.
E04 oo much movement during measurement. Press and release F1 and F2 at the same time.
Perform another measurement.
E05 High Measurement is out of clinically proven range. Obtain a otal Serum Bilirubin level ( SB)
E10 Light bulb is burned out. Replace measurement light bulb (see section 14.1 for instructions). If
error continues, the HHU has malfunctioned and requires service. Call
Respironics or your distributor.
E99 System error is detected. Call for Service.
Low battery pack. Maximum of 10 measurements left. Replace current battery pack with a fully
charged battery pack from the charger base and place the discharged
battery in well B for charging.
Discharged Battery pack. Replace current battery pack with a fully charged one from the charger
No measurements can be taken. base. Place the discharged battery pack into well B for charging.
Display
Window Indication Solution
11.1 Troubleshooting Guide

BiliChek Service Manual 19
1014988
A
Hand Held Unit (HHU)
Press and release either
button on top of the HHU
(F1 or F2).
Does the
display come
on?
No
Try another
Battery pack.
B
Yes
Record the display
information.
Refer to
Troubleshooting
guide, Section 11.1
Will the HHU
calibrate
Take 5 skin
measurements.
Yes
OK ?
Yes
The HHU is operating
correctly, and can be
returned to use.
No
Try several times. If still no
calibration, remove and rotate the
BiliCal tip and try again to calibrate. If
the error is still present, change the
measurement light bulb and try to
calibrate. NOTE: It will take several
trys to calibrate after a light bulb
change. If the error is still present,
record the error/sub error code
information found in section 11.0 and
con tact your dis tributor to request
instructions for returning the
defective HHU to Respironics for repair.
If the HHU will not take
skin measurements,
contact your distributor
and request instructions
for returning the defective
H H U t o Respironics f o r
repair.
No
B
Place a battery
pack in the
charger base in
the right hand well.
Well "B".
Does the right hand
BSI light glow ?
No
Place a battery
pack in the HHU
and place the HHU
in the charger
base left hand
well. W ell "A" Does the left hand
BSI light glow ?
Yes
Observe the color of
indicator:
Amber = charging
Green = Fully charged
Red = Defective Battery
pack
(See page 12 for amplification)
Charger Base
Remove all battery packs
and unplug the charger
base. Reconnect the
charger base to power
while observing the BSI
lights.
The BSI light
sequence should
be: BOTH LIGHTS
- Red - Green -
Amber - Off
OK ? No
The charger
base or the
power supply
is defective.
C
C
Make sure there is a fully
charged battery pack in the
HHU
Yes
Does
the MSI light glow ? See
section 10.0 of this
manual
Yes
NOTE: After the second
battery pack try, check the
battery pack output with a
multimeter. It should be
between 7 and 7.5 Volts DC.
NOTE: If the display is
fragmented (segments
missing), the HHU is
defective. Contact your
distributor for instructions on
the return of defective HHU
to Respironics for repair..
NOTE: The indicator light will
take about 3 seconds to
illuminate.
No
D
Insert a battery
pack into the
charger base right
hand well. Well "B".
Yes
11.2 Troubleshooting Flow Chart

BiliChek Service Manual 20
1014988
C
Is the BSI
illuminated ?
Is the BSI
Green ?
Is the BSI
Amber ?
Is
the BSI
blinking
Red ?
NOTE: Allow about 3
seconds for the BSI light(s)
to illuminate.
Yes
Yes
No
No
Check to ensure that the
battery pack is seated in the
well and power is applied to
the charger base. Try another
battery pack. If the BSI
illuminates with the second
battery pack, first battery pack
is defective. Order a
replacement battery pack from
your distributor.
The battery pack is fully
charged and is ready
for use in an HHU.
No
Yes
The battery pack is
charging. Leave it in
the charger base untill
the BSI light glows
green. See note 1.
below.
Yes
Try another battery pack. If the second
battery pack gives the proper indication,
the first battery pack is defective. Order
a replacement battery pack from your
distributor. If the BSI continues blinking
red with the second battery pack, the
charger base is defective and must be
repaired or replaced.
NOTES:
1. Ensure that the black switch located on the bottom of the
charger base is in the left ( ) position (charge only). If the
BSI is blinking amber, the charger is in the deep discharge/
recharge mode and the battery pack is discharging. The BSI will
glow steady amber when the battery pack is charging, and green
when the battery pack is fully charged.
2. Ensure that all contacts on both the battery pack and the
charger base are clean, not bent over or broken off, and free of
any obstructions.
D
Test the power supply in the following
manner. Check the incoming line voltage
from the mains circuit. It will be either
115 VAC or 220 VAC depending on your
locale. If the incoming power is OK, plug
in the power supply and check it's output
voltage at the connector that plugs into
the charger base. It should be approx. 12
VDC. If the output is incorrect, the power
supply is defective and must be replaced.
Contact your distributor for a
replacement.
If the power supply is operating correctly,
connect the power supply to the charger
base. If the BSI lights do not illuminate,
the charger base is defective and must
be repaired or replaced. For repair, see
section 11.3 of this manual (schematics
and drawings), and for replacement
contact your distributor.
Troubleshooting Flow Chart (continued)