Saadat Dena 350 User manual

SAADAT Co.
Service Manual
Electrocardiograph
D00720-V4
Dena 350

POOYANDEGAN RAH SAADAT CO.
Address: No. 4, 1st East St., Ettehad Blvd., Damavand St., TEHRAN,
IRAN
Post box: 1658916599
Tel: [phone]
Fax:[phone]
Customer Services:
Tel: [phone]
Fax: [phone]
Cell: [phone]
Legal responsible:
Trionara Technologies AB
Polygonvägen 21. 18766. Täby. Sweden
E-Mail: [e-mail]
Tel: [phone]
Web site: www.saadatco.com
Email: [e-mail]

Contents Service Manual –Dena 350
Contents
Chapter 1. Introduction
1
Chapter 2. Theory of operation
10
Chapter 3. Technical specification of system
12
Chapter 4. Installation
15
Chapter 5. Programming Instruction
16
Chapter 6. Test,Calibration and Upgrade procedures
17

Chapter 1. Introduction Service Manual –Dena 350
1
Chapter 1. Introduction
1.1 About this manual
This service manual contains technical information about system for qualified service personnel
to troubleshoot, maintain and repair the Electrocardiograph Dena 350.
This Electrocardiograph Dena 350 is produced in POOYANDEGAN RAH SAADAT Co.
So when you want to service these systems, you should refer to this manual but if you want to
know about system settings and get more information about using them, you should refertothe
operator’s manual.
This manual is intended to help detecting troubles and trouble shooting of the
Electrocardiograph to the board level.
It is not permitted to service the printed circuit boards of system.
1.2 Warnings
Dena 350 Electrocardiograph is intended for clinical application
with Operation only granted to appropriate medical staff.
The device warranty is void if warranty labels were removed by
unauthorized persons.
Do not touch patient, table which device is placed on or the
equipment during patient defibrillation.
Every servicing or changing internal parts of system must be
performed by qualified technician of POOYANDEGAN RAH
SAADAT Co.
These systems are not suitable for use in environments containing
flammable anesthetic gases which combined with air, oxygen or
nitrogen oxide.

Chapter 1. Introduction Service Manual –Dena 350
2
1.3 General information
Dena 350 is a small, light-weight and portable Electrocardiograph usable in all areas due to
portability and battery function capability. It has a 5 inch TFT color LCD with touch screen and
built-in recorder.
1.3.1 Top Panel
Recorder: to load recording paper and print ECG signals.
Recorder Release Button: to open the recorder door.
Device Membrane: to control the system operation.
LCD Screen: ECG waveform, patient information, messages, etc. are contents displayed on
the LCD.
Figure 1-1 Electrocardiograph Dena 350 Top Panel
Avoid disinfecting of device and its LCD with liquid and
flammable materials.
If you want to use device with patient defibrillator simultaneously,
use patient cables approved by company (with internal resistor of
10kΩ, 3W at least) and do not use other cables

Chapter 1. Introduction Service Manual –Dena 350
3
▪LCD Screen
Electrocardiograph has a color TFT LCD screen. 12-lead ECG waveform, Heart Rate value,
Patient ID, Date and Time, system operating status and error messages are displayed on the
screen.
The screen is divided into four areas: Header Area, Waveform Area / Menu Area,Systemic
Message Area and soft keys area.
Figure 1-2 Electrocardiograph LCD Screen

Chapter 1. Introduction Service Manual –Dena 350
4
▪Control Panel and Keys
Electrocardiograph is designed so that the operator is able to control it through some keys and a
touch LCD screen.
1-On/Off :
Press to turn on or off the device.
2-Sens:
Use to adjust the amplitude of ECG waveform on the screen and recording paper.
3- Copy :
Press to re-print previous record .
4-Speed :
Use to adjust the recording speed.
5-Calib :
Press to record a 1mV calibration signal
6-◄Lead :
Press to select previous lead (s).
7-Lead► :
Press to select next lead (s).
8-Start/Stop :
Press to record ECG signals. Press again to stop the recording.
9- Reset :
Press to reset filters and bring signals back to the main screen.
10-Mode:
Press to select recording mode.
11- Right Arrow :
Press to move cursor to the right in some menus.
12- Down Arrow :
Press to move cursor to the down in some menus
13- Up Arrow :
Press to move cursor to the up in some menus
14- Enter:
Press to enter software menus or select menus options.
15- Left Arrow :
Press to move cursor to the left in some menus
16- Menu/Home:
Press to access Main Menu or return to main page.

Chapter 1. Introduction Service Manual –Dena 350
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Figure 1-3 Electrocardiograph Control Panel and Keys
▪Indicators
There are two indicators for power and battery on the top panel. The green indicator lights up,
when the device is plugged in (17in Figure 1-3). Depending on remaining charge of battery,
battery indicator can be green, orange or red when the battery is fully-charged, half-charged or
almost empty, respectively. (18in Figure 1-3).
17-AC indicator:
This LED lights on when AC power is plugged in
18- Battery indicator:
Battery indicator can change color according to battery status

Chapter 1. Introduction Service Manual –Dena 350
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1.3.2 Bottom Panel
Bottom view of device is shown in Figure 1-4.
1- Speaker outlet
2- Battery container
Figure 1-4 Bottom Panel
1.3.3 Rear Panel
There are the following sockets on the rear panel of the main unit (Figure 1-5).
1- Equipotential grounding terminal for connecting to the grounding system of hospital.
2- Power Supply jack: 100-240 VAC, 60 VA 50/60 Hz.
Figure 1-5 Rear Panel
1.3.4 Right Panel
The following parts are on the right side of the main unit:
1- USB Device port for transmitting data to PC
2- RJ-45 Socket (future capability)
3- USB Host port for upgrading main firmware
4- SD Card Socket for saving data corresponding to recorded signals on the SD Card

Chapter 1. Introduction Service Manual –Dena 350
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Figure 1-6 Right Side Panel
1.3.5 Left Panel
The following parts are on the left side of the main unit:
1- Recorder release button
2- Connector of ECG cable
Figure 1-7 Left Side Panel