Kongsberg Simrad IS12 User manual

1
IS12 INSTRUMENT SYSTEM
SERVICE MANUAL

Issue 1.0 06/06/03 SIMRAD
2
Simrad Margate Ltd
Star Lane, Margate, Kent CT9 4NP,UK
Telephone [phone]
Facsimile [phone]
E-Mail : [email protected]
CONTENTS
1 INTRODUCTION
2 OPERATION
3 DISASSEMBLY / ASSEMBLY INSTRUCTIONS
4 MECHANICAL ASSEMBLY DRAWINGS
5 CIRCUIT DESCRIPTIONS
6 CIRCUIT DIAGRAMS
6.1 Circuit Schematics
6.2 Component Lists and Layouts
7 PROGRAMMING AND CONFIGURATION
8 FAULT FINDING
8.1 Common User Faults
8.2 Common Technical Faults
9 SPARE PARTS DETAIL
9.1 Spares
9.2 Service Aids
10 TECHNICAL NOTES
© 2003 Simrad Margate Ltd
The technical data, information and illustrations contained in this publication were to the best of our knowledge correct at the time of going to print. We
reserve the right to change specifications, equipment, installation and maintenance instructions without notice as part of our policy of continuous
development and improvement. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form, electronic or
otherwise without prior permission from Simrad Margate Ltd. No liability can be accepted for any inaccuracies or omissions in the publication, although
every care has been taken to make it as complete and accurate as possible.

3
IS12 Instrument System
Section 1
Introduction

Issue 1.0 06/06/03 SIMRAD
4
1. INTRODUCTION TO THE IS12 INSTRUMENT SYSTEM
The Simrad IS12 Instrument System is a flexible, modular system that offers large, clear displays,
easy to operate functions and robust, weatherproof construction. The system is built around a
high-speed bus network that provides simple interconnection and data share facilities.
SPEED / LOG – The IS12 Speed / Log System provides speed and water temperature data and
consists of a self-sealing, through hull speed transducer, display unit and relevant cabling.
DEPTH – The IS12 Depth System provides water depth data and consists of a through hull depth
transducer, display unit and relevant cabling.
COMBI SPEED / DEPTH – The IS12 Combi Speed / Depth System provides both depth, speed
and water temperature data and consists of a through hull depth transducer, a self-sealing, through
hull speed transducer, display unit and relevant cabling.
MEGA – The Mega Instrument is a multifunction data repeater that can display data from any IS12
master unit in the system, or act as an NMEA repeater. The unit consists of a display and 5m data
cable to enable it to be linked into an existing IS12 system.
DATA – The IS12 Data Unit is a multi-line data repeater that can display information from any
master unit in the system. The unit consists of a display and 0.3m data cable to enable it to be
linked into an existing IS12 system.
WIND – The IS12 Wind System provides both analogue and digital wind data and consists of a
masthead transducer with 30 meter cable, power cable and analogue display unit.
COMPASS – The IS12 Compass System provides both analogue and digital display of the current
boat heading as either true or magnetic bearing. The system consists of a display, transducer and
power cable.
CONTROLLER AND ALARM – The IS12 Controller and Alarm enables remote operation of IS12
instruments and consists of a controller, complete with cable, and a dash mount clip.

5
IS12 Instrument System
Section 2
Operation

Issue 1.0 06/06/03 SIMRAD
6
2. CALIBRATING AND OPERATING IS12 INSTRUMENTS
This Service Manual only contains calibration and operational information for those features of the
IS12 System which are not normally available to the end user. For details of normal calibration
and operation please refer to the appropriate user manual.

7
IS12 Instrument System
Section 3
Dis-assembly Assembly Instructions

Issue 1.0 06/06/03 SIMRAD
8
3 DISASSEMBLY / ASSEMBLY INSTRUCTIONS
A strong element of commonality exists between the instrument display units. The Assembly :
Case Back (E04000), Assembly : Case Front (E04006) and Bezel : Square (E03799) are common
throughout and disassembly and assembly of the various units can be considered to be identical
with one exception, in the Wind and Compass Instruments the Piezo Sounder is fitted with a Self
Adhesive Insulator Disc (E04227) to protect the Sounder from contact with the Pointer motor.
3.1 Instrument Display Units
Disassembly
Remove the Bezel (E03799) by lifting the top edge of the bezel to disengage the locking clips and
pull away from the instrument head thus freeing the bezel and Keypad.
Refer to Drawing Nos. E03893 and E04000 and remove the Instrument Mounting Gasket (E03837)
from the Case Rear and release the 10 screws (200288). Remove the Assembly : Case Front
(E04006) and ease the PCB from the case rear, the Sim Net Socket Headers ((E03995) and 7-
Way Terminal Seal (E03831) will remain fixed to the PCB and the Sim Net Socket Collars
((E03803) and “O” Rings (190044) will remain with the Case Rear. De-solder the leads to the
Piezo Sounder (160074) to release the PCB.
Assembly
Ensure that the Square Case Seal (E03830) is fitted securely into the seal well with the radius side
into the well and the flat side facing outwards. Solder the Sounder leads into place. Ensure that
the “O” Rings are in place in each Sim Net Socket Header. Guide the Sounder leads away from
the sockets, to avoid trapping them, and offer up the PCB assembly to the Case Rear, locating the
7-Way Terminal Seal and the Sim Net Header Sockets into their appropriate holes. Apply firm
pressure between the LCD edges and the Case Rear to press the sockets home. Locate the Case
Front over the LDC / PCB and place the assembly face down on a soft cloth. Engage the 10
Screws, if re-using the case front turn each screw anti-clockwise until it engages in the thread, the
screw will drop in with an audible “click” , and tighten the screws evenly until the seal is fully
compressed. Locate the Keypad in the holes in the Bezel and offer up the assembly to the
instrument head , angling the Bezel slightly backwards to prevent the keypad falling out. Press the
Bezel into place, a sharp “click” is audible as the locking clips engage.

Issue 1.0 06/06/03 SIMRAD
9
Fit an Instrument Mounting Gasket to the Case Rear and test the unit to specification.
3.2 Instrument Remote Controller.
Disassembly.
Refer to Drawing Number E03800. Remove and retain the 6 3 x 10 mm Screws (200303) from the
rear of the unit and ease the front and rear cases apart. Retain the four Neoprene Spacer
Washers (200184) positioned, one at each of the four corners. Remove and retain the 3 No 4 x _
Screws (200104) and release the PCB. The Keypad Shim (E03954), Keypad (E03819) and the
Case Seal (E03858) may now be removed and the PCB de-soldered as required. The Hand
Remote Cable (E04042) may be removed by de-soldering the 4 connections from the PCB,
removing the Tie Wrap (200026) and withdrawing the cable through the Cable Grommet (E02542).
Assembly.
Locate the Case Seal (E03858) into the recess in the Front Case moulding (E03876) ensuring that
the radius side is towards the case and the flat side is visible. Place the Keypad (E03819) into
position ensuring that the buttons locate correctly into the apertures. Fit the Keyboard Shim
(E03954) over the switches on the PCB and fit the PCB into the front case ensuring that the shim
remains in position. Secure the PCB in place with the 3 No 4 x _ Screws (200104) and solder the
Piezo Sounder (160074) connections to the PCB. Insert the stripped ends of the Hand Remote
Cable Assembly (E04042) through the aperture in the Rear Case Moulding (E03813) and slide the
Cable Grommet (E03701) over the cable ends until 70mm of the outer insulation remains
protruding. Press the grommet into the aperture, fold the cable anticlockwise around the central
pillar of the case and secure with a Cable Tie (200026) as shown below:

Issue 1.0 06/06/03 SIMRAD
10
Solder the 4 cable connections to the PCB as shown below:
.
Fit the two halves of the case together, place a Neoprene Washer at each of the corner stand offs
and fit the 6, 3 x 10 mm Screws (200303), and tighten down. Complete a full functional check
3.3 Mast Head Unit / Wind Transducer.
Drawings relating to the masthead unit are shown for information only. The masthead unit is a
factory calibrated item and only the anemometer and the wind vane can be replaced without
recalibration.