S5 8-Module Frame Technical Reference Manual June 2001

Table of contents

TABLE OF CONTENTS 8-module frame, F-CU8 TABLE OF CONTENTS

i

TABLE OF FIGURES

ii

Introduction

1

1

2

Specifications

1.1 8-Module Frame, F-CU8...2 1.1.1 Electrical requirements ...2 1.1.2 Environmental requirements ...2

2

Functional Description

3

2.1 8-Module Frame, F-CU8...3 2.1.1 Power supply unit ...4 2.1.2 CPU mother board ...12 2.1.3 Module mother board ...12 2.2 Connectors and signals...12 2.2.1 Internal connectors...12

3

Service Procedures

15

3.1 General service information...15 3.2 Service check ...15 3.2.1 Recommended tools ...15 3.2.2 Recommended parts ...15 3.3 Disassembly and reassembly...21 3.3.1 Power supply unit ...22 3.3.2 Lead acid battery...22 3.3.3 Changing fuses...22 3.4 Adjustments and calibrations...22

4

Troubleshooting

23

4.1 Troubleshooting flowcharts...23 4.1.1 Monitor ...23 4.1.2 Central Unit...24 4.1.3 Digital section ...25

5

Service MENU

26

5.1 Service menu structure ...26 5.2 Service...27 5.3 Service menu ...28 5.4 Frame ...28 5.4.1 Power Supply ...29

6

Spare Parts

30

6.1 Spare parts list ...30 6.1.1 8-Module Frame, F-CU8 rev. 01 ...30 6.1.2 8-Module Frame, F-CU8 rev. 02 ...32 6.1.3 8-Module Frame, F-CU8 rev. 03 ...32 i Document No. 8001003-2

Datex-Ohmeda S/5 AM and S/5 CCM 6.1.4 8-Module Frame, F-CU8 rev. 04...32 6.1.5 8-Module Frame, F-CU8 rev. 05...32 6.1.6 8-Module Frame, F-CU8 rev. 06...33 6.1.7 8-Module Frame, F-CU8 rev. 07...33

7

Earlier Revisions

34

APPENDIX A

35

SERVICE CHECK FORM

A-1

TABLE OF FIGURES Figure 1

8-Module Frame, F-CU8 ... 1

Figure 2

Basic structure of S/5 Monitor, an example of possible configuration ... 3

Figure 3

Power supply unit block diagram... 4

Figure 4

Mains part and display outlet block diagram... 5

Figure 5

Power supply board block diagram... 7

Figure 6

Power logic board block diagram ...10

Figure 7

Monitor troubleshooting flowchart...23

Figure 8

Central Unit troubleshooting flowchart...24

Figure 9

Digital section troubleshooting flowchart ...25

ii Document No. 8001003-2

8-Module Frame, F-CU8 (Rev. 07)

INTRODUCTION This section provides information for the maintenance and service of the following products: •

8-Module Frame, F-CU8 (also called Central Unit) • Power supply unit • CPU mother board • Module mother board

Figure 1

8-Module Frame, F-CU8

1 Document No 8001003-2

Datex-Ohmeda S/5 AM and S/5 CCM

1

SPECIFICATIONS

1.1 8-Module Frame, F-CU8 Dimensions, D × W × H Weight

382 × 315 × 128 mm (15.0 × 12.4 × 5.0 in) 9.5 kg (21 lbs)

1.1.1 Electrical requirements Power supply Stability Power consumption Grounding Interruptibility

100, 110-120, 220-240 VAC 50/60 Hz, 1.2 A (for whole system) ±10 % of nominal voltage 280 VA Hospital grade Data memory and alarm settings are saved during power failures up to 15 minutes

1.1.2 Environmental requirements Operating temperature Storage temperature Atmospheric pressure Humidity

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10...35 °C / 50...95 °F -10...+50 °C / 14...122 °F 660...1060 hPa (660...1060 mbar) 10...90 % non-condensing (in airway 0...100 % condensing)

8-Module Frame, F-CU8 (Rev. 07)

2

FUNCTIONAL DESCRIPTION

2.1 8-Module Frame, F-CU8 To operate S/5 Anesthesia Monitor or S/5 Critical Care Monitor, the following products should be installed into the frame •

CPU board, B-CPU4 w/ main software

•

UPI4 or UPI4NET board, B-UPI4 or B-UPI4NET

•

Display controller board, B-DISP

The frame has two sections. The front part is for the modules. On the between the front and rear parts, there are module mother board and CPU mother board. The module mother board connects modules to the system, and the CPU mother board connects boards together. Display

Airway Module

Software Card w/ B-CPU4

Command Board

Software Cartridge w/ B-CPU2/3

Gas Interface Board

CPU Mother Board

Module Mother Board

Display Controller Board

CPU Board

Power Supply Unit

CPU Bus

Module Bus

Recorder Module

NIBP Module

ESTP Module

P Module

COP Module

Figure 2

UPI Board

Basic structure of S/5 Monitor, an example of possible configuration

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Datex-Ohmeda S/5 AM and S/5 CCM

2.1.1 Power supply unit Power supply unit contains three PC boards (power supply board, power logic board, and triac board) and four external components (mains transformer, fan, loudspeaker, and lead acid battery). All the operational controls in the power supply unit are located in the three PC boards. M A IN S T R A N S F O R M E R

T 1 0 A

+ 3 2 V d S W IT C H

R E C T IF IE R S , P O W E R F A C T O R C O R R E C T IO N

+ 3 2 V d

-1 5 V

D IS P L A Y O U T L E T

c *P O W E R O N /S T B Y C O N T R O L , B A T C H R G , e tc .

T R IA C

T R IA C B O A R D D IS P L A Y O U T L E T

+ 5 V in t

c

-1 5 V C O N V E R T E R

s t(-1 5 V ) O N /S T B Y 3 2 V

+ 5 V cp u

c

G N D

c + 1 5 V d

c

O N /S T B Y S W IT C H O N C O M M A N D B O A R D

+ 1 5 V a

+ 1 5 V C O N V E R T E R

c

f(-1 5 V )

f(+ 1 5 V )

+ 3 2 V d

s t(+ 1 5 V )

F A N 1 5 V d

c

S IL E N C E A L A R M D IP S W IT C H O N P O W E R S U P P L Y B O A R D

+ 5 V c p u

c * A U D IO A M P .

c

L O U D S P E A K E R

A U D IO in

+ 5 V

B A T C H R G

6 V B A T T E R Y

+ 5 V C O N V E R T E R

2 A F

S T O P

s t(+ 5 V )

c c *C P U IN T E R F A C E

S E R V IC E R E S E T B U T T O N

f(+ 5 V )

R E S E T C P U

R E S E T P O W E R F A IL W D

c c

* P O W E R O N /S T B Y C O N T R O L , A U D IO A M P ., a n d C P U IN T E R F A C E a r e in P o w e r L o g ic B o a r d . A ll o th e r fu n c tio n s a r e in P o w e r S u p p ly B o a r d .

Figure 3 4 Document No. 8001003-2

Power supply unit block diagram

8-Module Frame, F-CU8 (Rev. 07)

Figure 4

Mains part and display outlet block diagram

Power supply board Rectifiers Rectifiers processes 21 VAC from the mains transformer. Power factor correction Power factor correction is performed in a preregulator. The regulator modifies output current from sinusoidal power lines into sinusoidal form. Its purpose is to boost efficiency of the mains transformer. Battery charging Batchrg charges the 6 V battery which maintains the supply voltage of CPU for 15 minutes after the power is cut off. The battery is charged as long as the power cord is connected to the mains outlet. Supply voltage for pulse width modulators Supply voltage for pulse width modulators of chopper power supplies is generated by 12 V regulator at power-up and if +15 V is short-circuited. Otherwise the supply voltage comes from +15 V. -15 V converter -15 V converter is a Flyback-type chopper power supply that generates -15 V analog voltage from +32 V. The load capacity is 500 mA (7.5 W). +5 Vcpu is also generated in this converter.

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Datex-Ohmeda S/5 AM and S/5 CCM +15 V converter +15 V converter is a Buck-type chopper power supply that generates +15 V from +32 V. The output of the power supply is divided into two; +15 Va for analog voltage and +15 Vd for less sensitive components. +5 V converter +5 V converter is a Buck-type chopper power supply that generates +5.1 V from +32 V. The load capacity is 8 A (40 W). +5 V, +15 V, +32 V, and +5 Vcpu checking Those voltages are checked and if one of them increases more than is allowed, thyristor pulls the rectified +32 V down. Service reset button Service reset button is for service purpose. Press this button with an appropriate tool for at least five seconds before you remove any PC board or the Power supply unit from the rear of the Central Unit. Before connecting the power cord back and start monitoring, be sure that at least one minute has passed after the service reset button has pressed. Too short time may lead to memory flaw. Audible alarm for power fail Under the cover plate of the Power supply unit there are two dip switches. By turning the switches to the left the audio alarm is activated. When mains power fails the audio alarm is generated by the lead-acid battery.

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8-Module Frame, F-CU8 (Rev. 07)

Figure 5

Power supply board block diagram

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Datex-Ohmeda S/5 AM and S/5 CCM

Power supply board interface to CPU mother board Pin c2,c4: +32 Vd Rectified and filtered +32 V dirty voltage. This voltage is switched on by pulses of +15 V chopper power supply which turns the switching transistor on with the help of charging pump. The switching transistor is a short-circuit protected MOSFET. The ripple voltage when fully loaded is about 3 Vpp at the frequency of two times mains frequency. Pin c32: -15 V Accuracy of -15 V is ±2 %. The load capacity is 500 mA and the ripple voltage about 30 mVpp at the chopper frequency (200 kHz ±10 %). Pin c22: f (-15 V) The chopper frequency measured at the rear panel connector whose pulse ratio corresponds to the pulse width modulator's pulse ratio. For test use only. Pin c20: st (-15 V) The chopper can be turned off by connecting this line at the rear panel connector to ground. For test use only. Pin a2,a4: +15 Vd Accuracy of +15 V is ±2 %. The load capacity is 6.5 A if +15 Va is not loaded. The ripple voltage about 50 mVpp at the chopper frequency (200 kHz ±10 %). Pin 32: +15 Va +15 V for analog voltage. The load capacity is 1.2 A and is passive filtered from +15 Vd. The ripple voltage about 10 mVpp at the chopper frequency (200 kHz ±10 %). The total load capacity of +15 Va and +15 Vd is about 6.5 A (97.5 W). Pin b22: f (+15 V) The chopper frequency measured at the rear panel connector whose pulse ratio corresponds to the pulse width modulator’s pulse ratio. For test use only. Pin b20: st (+15 V) The chopper can be turned off by connecting this line at the rear panel connector to ground. For test use only. Pin a6,a8,b8: +5 V Nominal voltage is 5.1 V and its accuracy is ±2 %. The load capacity is 8 A. The ripple voltage about 50 mVpp at the chopper frequency (200 kHz ±10 %).

8 Document No. 8001003-2

8-Module Frame, F-CU8 (Rev. 07) Pin a22: f (+5 V) The chopper frequency measured at the rear panel connector whose pulse ratio corresponds to the pulse width modulator's pulse ratio. For test use only. Pin a20: st (+5 V) The chopper can be turned off by connecting this line at the rear panel connector to ground. For test use only. Pin b10: +5 Vcpu Supply voltage for the CPU. Nominal voltage is 5.1 V. The accuracy is ±2 % and the load capacity 1 A. The ripple voltage is 50 mVpp. The +5 Vcpu is connected to linearly regulated battery voltage when the choppers are switched off. Pin b14: -RESET Signal for the digital boards. Pin a10: -RESET CPU Signal for the CPU. Pin a12: -POWERFAIL The signal informs about supply voltage failure to the CPU. Pin b12: WD Watchdog input signal. The CPU must toggle WD within every 1.6 seconds. Otherwise the power supply will generate -RESET and -RESET CPU signals. Pin c12: AUDIOin Audio signal which is amplified in Audio-amp. circuit. Ground All the signals and lines within the Power supply unit share the common ground which is connected to monitor chassis.

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Datex-Ohmeda S/5 AM and S/5 CCM

Power logic board

Figure 6

Power logic board block diagram

Protections These following protections generate automatic power off situations without any message in advance. 1.

High voltage protection (+32 V, +15 V, +5 V, +5 Vcpu). Requires manual start-up and power cord must be disconnected for a while. Valid from revision 03.

2.

Low voltage protection (+32 V). Automatic power off when U < +25 V. Automatic start-up after voltage back to normal.

3.

High current protection (all secondary outputs). Output restrained until cause is eliminated.

4.

High temperature protection. Automatic power off at +58 °C (approx.) and automatic startup at +54 °C (approx.). Possible caused by fan failure, fan filter is not clean or power supply unit is overloaded. The measurement is located on the Power logic board.

Power ON/STBY control Power ON/STBY control includes a logic with which power supply is switched on or off by turning ON/STBY switch.

10 Document No. 8001003-2

8-Module Frame, F-CU8 (Rev. 07) Reset -RESET_CPU signal is transmitted to the CPU interface in case the mains voltage fails or the power is cut off. -RESET signal is also generated for other digital boards. Audio amp. Audio signal from the CPU is amplified and filtered for the loudspeaker. Amplification gain is about 5 dB. CPU interface All the necessary communications between the Power supply unit and the CPU (Reset-, powerfail-, and watchdog-functions) are realized in this board. Additionally, the block contains a circuit that supervises the maintenance of CPU’s supply voltage from the battery for 15 minutes after monitor is turned off. Display control Display control circuit controls Triac board control signal (TRIAC).

Triac board Tasks of the Triac board are to supply voltage to the Video display when the monitor is turned on and cut off the voltage when it is turned off. This is done by a solid state relay and peripheral components.

External components Transformer The power of the mains transformer is 250 VA. The secondary voltage is 21 VAC and for the display unit it is either 100 VAC, 115 VAC, or 230 VAC. Depending on the voltage in use, there are three different transformers for the monitor. Fan The fan is switched on automatically when +32 Vd is generated. Loudspeaker The loudspeaker is controlled by the audio-amplifier on the Power logic board. Battery 6 V, 1.2 Ah sealed lead-acid battery is used to supply power to the CPU board after the power is turned off and the power cord is disconnected.

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Datex-Ohmeda S/5 AM and S/5 CCM

2.1.2 CPU mother board The CPU mother board connects the CPU board and other boards (e.g. UPI4 and Display controller board) and functions as a bus between them. There are connectors for six PC boards. Five of those are normally occupied (B-UPI4(NET), B-CPU4, B-DISP and B-GAS or B-INT) and one is reserved for, e.g. Keyboard interface board, B-ARK. The bus structure is the same in all S/5 monitors. ON/STBY-line is connected only to a Display controller board connector from where it goes directly to Keyboard and ON/STBY switch. The CPU mother board is connected to module mother board by 25-pin D-connector.

2.1.3 Module mother board This board connects the modules and the main frame together electrically. Module bus structure is the same in all S/5 monitors. There are connectors for 4 double-width or 8 single-width modules.

2.2 Connectors and signals 2.2.1 Internal connectors Power supply (X3) - CPU mother board connector Pin

a(a)

b(c)

c (e)

2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32

+15 VD +15 VD +5 V +5 V RESET_CPU POWER_FAIL ON/STBY N/C GND TEST1 N/C TEST4 N/C TEST7 N/C GND BAT_ON N/C N/C +15 V

GND GND GND +5 V +5 V_CPU REFRESH_WD1 RESET N/C GND TEST2 N/C TEST5 N/C TEST8 N/C GND V_BAT N/C GND GND

+32 VD +32 VD GND GND GND LOUDSPEAKER N/C N/C GND TEST3 N/C TEST6 N/C TEST9 N/C GND I_BAT N/C N/C -15 V

12 Document No. 8001003-2

8-Module Frame, F-CU8 (Rev. 07) CPU mother board - Module mother board Pin No

I/O

Signal

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

O O O O O O O O I O I O O O O I O I O I I I O O O

RESET_RS485 -15 VDC +15 VDIRTY +15 VDC -DATA_RS485 DATA_RS485 Ground & Shield -RESET_RS485 CTSB RTSB RXDB TXDB Ground & Shield +32 VDIRTY GroundDIRTY CTSC RTSC RXDC TXDC ON/STANDBY PWM_ECG RXDD_RS232 TXDD_RS232 +5 VDC +5 VDC

13 Document No 8001003-2

Datex-Ohmeda S/5 AM and S/5 CCM CPU bus - CPU mother board a

b

c

1 2 3 4 5 6

+15 V -15 V SA0 SA2 SA4 SA6

AGND BALE SA1 SA3 SA5 SA7

DGND DGND DGND RESET_RS485 -RESET_RS485 DATA_RS485

7

SA8

SA9

-DATA_RS485

8

SA10

SA11

TXDD_RS232

9

SA12

SA13

RXDD_RS232

10

SA14

SA15

PWM_ECG

11

SA16

SA17

BIT1IN

12

SA18

SA19

TXDC

13

SA20

SA21

RXDC

14

SA22

SA23

RTSC

15

-SMEMR

-SMEMW

CTSC

16

-SIOR

-SIOW

TXDB

17

CLK

-RESET

RXDB

18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

-IOCHRDY N/C_1 N/C_2 -SBHE SD0 SD2 SD4 SD6 SD8 SD10 SD12 SD14 +15 VD +15 VD GNDD

IRQ10 IRQ11 IRQ12 IRQ15 SD1 SD3 SD5 SD7 SD9 SD11 SD13 SD15 -RESET_CPU +32 VD GNDD

RTSB CTSB TXDA RXDA RTSA CTSA AUDIO_OUT +5 V +5 V +5 V +5 V ON/STBY +5 V_CPU REFRESH_WD POWER_FAIL

14 Document No. 8001003-2

8-Module Frame, F-CU8 (Rev. 07)

3

SERVICE PROCEDURES

3.1 General service information Field service of the F-CU8 is limited to replacing the faulty printed circuit boards or mechanical parts. The printed circuit boards should be returned to Datex-Ohmeda for repair. Datex-Ohmeda is always available for service advice. Please provide the unit serial number, full type designation, and a detailed description of the fault.

CAUTION

Only trained personnel with appropriate equipment should perform the tests and repairs outlined in this section. Unauthorized service may void warranty of the unit.

3.2 Service check These instructions include complete procedures for a service check. The service check is recommended to be performed after any service repair. However, the service check procedures can also be used for determining possible failures. The procedures should be performed in ascending order. The instructions include a check form (Appendix A) which should be filled in when performing the procedures. The mark

? in the instructions means that the check form should be signed after performing

the procedure.

The procedures are designed for monitors with software of level 00. However, most of the procedures also apply to monitors with older monitor software.

3.2.1 Recommended tools Tool

Order No.

Notes

Command Board M-REC M-NE(12)STPR/M-ESTPR/M-ESTP Datex-Ohmeda gas monitor UPI Interface cable

e.g. Capnomac Ultima 887245

Multimeter Screwdriver

3.2.2 Recommended parts Part

Order No.

Fan filter Recorder paper

871558

Notes

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Datex-Ohmeda S/5 AM and S/5 CCM

General Make sure that no cables and modules are connected to the Central Unit. Lift off the Video display with its stand, if placed on the Central Unit. 8-Module Frame, F-CU8 1.

Check that the central unit plastic frame is intact.

2.

Check that the two brass plugs on the frame are tightened properly.

3.

Turn the frame onto one of its sides. Check that all the four rubber pads are in place and the screws on the bottom are tightened properly.

? ? ?

4.

Check that the loudspeaker is intact.

5.

Turn the frame back on to its normal position. Check that the module motherboard connectors are clean and intact. Check also that the screws that connect the module mother board to the frame are tightened properly.

? ?

6.

Check that the M-REC fits in smoothly and locks up properly in all possible slots in the Central Unit. Leave the M-REC disconnected.

?

Power supply unit 7.

Clean or replace the fan filter.

8.

Disconnect the primary fuse holder. Check that the fuse compartment, the fuse holder and the fuses are clean and intact. Check also that the fuses are of the correct rating. Reconnect the fuse holder and check that it locks up properly.

? ?

9.

Check that the connectors for the mains power cord and display power cord are clean and intact.

?

16 Document No. 8001003-2

8-Module Frame, F-CU8 (Rev. 07)

10. Check that the service reset -switch is intact. Press the switch at least for five seconds.

?

11. Check that the equipotential tap and all the rear panel screws are tightened properly.

?

PC boards 12. Check that all the rear side PC boards are secured to the Central Unit with two screws.

?

13. Check that the PC boards rear panel connectors are clean and intact.

?

14. Check that all block screws for cables are in place and are tightened properly. Check also that their threads are intact.

?

15. Check that the grounding plates under the PC board rear panels are attached properly and are not bent. NOTE: Older PC boards may not include the grounding plates.

?

16. If the Central Unit has the B-GAS or the B-INT installed, disconnect the board and check that the fuse and its holder are clean and intact. Check also that the fuse is of the correct rating. NOTE: The B-GAS may include up to six fuses. All fuses and their holders should be checked. Leave the board disconnected.

?

17. Disconnect the Display controller board(s) and check that the address and interruption jumpers have been set correctly. The instructions for setting the jumpers can be found in the Technical Reference Manual. Leave the board(s) disconnected.

?

Disconnect the UPI4(NET) board.

17 Document No 8001003-2