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GANA-000029 OfficeServ 12 Service Manual...
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This manual is proprietary to SAMSUNG Electronics Co., Ltd. and is protected by copyright. No information contained herein may be copied, translated, transcribed or duplicated for any commercial purposes or disclosed to third parties in any form without the prior written consent of SAMSUNG Electronics Co., Ltd.
This chapter describes the exploded view and parts list of the OfficeServ 12 system. ANNEX A. PCB Component Layout This annex describes the solder side and component side layout of the OfficeServ 12 system. ABBRIVATION Describes the acronyms used in this manual.
Indicates additional information as a reference. Reference OfficeServ 12 Intallation Guide This guide is an installer’s guide containing information on system specification, how to install and set up the OfficeServ 12 system and how to connect the additional equipment. Revision History EDITION DATE OF ISSUE REMARKS 10.
Do not directly connect the external paging equipment or a common bell to a commercial AC power supply. This is to prevent fire and immediate breakdown of the OfficeServ 12 system. Check whether the power is on before connecting a cable for battery connection.
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- Do not turn off the power during program upgrades. Follow the instructions below before disassembling the OfficeServ 12 system. - Unplug the AC power cable and turn off the OfficeServ 12 system power. - Remove the cables of external devices such as phone and external battery from the OfficeServ 12 system.
CAUTION Caution for using battery DC 48 V(6~40 AH) batteries should be used for OfficeServ 12. If the capacity of the battery is too great, system malfunction may occur. If the capacity is too small, the system may not operate properly during a power failure.
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LIST OF FIGURES Figure 1.1 Front View of the OfficeServ 12.................... 1 Figure 1.2 Ports and Switch of the OfficeServ 12 ................. 2 Figure 1.3 Bottom View of the OfficeServ 12 ..................3 Figure 2.1 OfficeServ 12 Board Configuration (When 3/4TRK is Equipped)........1 Figure 2.2 OfficeServ 12 Board Configuration (When 2BRI is Equipped)...........
This chapter introduces the hardware and specifications of the OfficeServ 12 system. Compliance with local standards OfficeServ 12 is designed to comply with the standard of the corresponding country. 1.1 Hardware Descriptions This section introduces each view and part descriptions of the OfficeServ 12 system.
This switch is for using the battery and supplying the power to the switch OfficeServ 12 system when power is interrupted to keep data for a predetermined time. The switch must be turned ‘ON’ after the data is input. DLI1 port...
1.1.3 Bottom View Groove for ground connection cable LAN port Power switch Groove for wall mounting Power connector Figure 1.3 Bottom View of the OfficeServ 12 Table 1.3 Bottom View Descriptions Item Description Groove for ground connection cable A groove for grounding.
External Page AP(for WLAN) WIP-5000M phone The OfficeServ 12 system provides 8 station lines(1 DLI port, 2 HYB ports, and 5 SLI ports). DLI port supports 2B(KDB-D, KDB-S) and hybrid port supports analog phone and digital phone(DLI max configuration: 3 ports, SLI max configuration: 7 ports).
Disassembly and Reassembly This chapter introduces how to disassemble the OfficeServ 12 system. You can reassemble the OfficeServ 12 system by following the steps in reverse order. 2.1 Boards and PSU OfficeServ 12 is composed of the base board, 3/4TRK board, 2BRI board, MGI(Media Gateway Interface) board, and PSU(Power Supply Unit).
Disassemble the OfficeServ 12 system as following procedure. Follow the instructions below before disassembling the OfficeServ 12 system. - Unplug the AC power plug from the wall outlet and turn the OfficeServ 12 system power switch off. - Remove the cables of external devices such as phone and external battery from the OfficeServ 12 system.
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6) Remove the 3/4TRK board or 2BRI board from the base board. Follow the instructions below before disassembling the OfficeServ 12 system. Wear wrist straps and ground the straps before handling boards or parts of the OfficeServ 12 system. 7) Remove the MGI board attached to the connectors on both ends of the base board.
3.1 Power Failures Failure The OfficeServ 12 system is not powered properly. Troubleshooting 1) Check the Power supply as follows: Turn on Power. Pull out the Power cable Is LED1(base board) connected to base board. Measured the DC Voltage between GND and -55 V of CN21 within the power board.
3.2 Base board Failures Failure The base board of the OfficeServ 12 system does not operate properly. Troubleshooting Checking the base board boot as follows: Turn on the Power switch. Check if LED1 on base Check if Boot ROM(V121) is board is blinking fast.
H/W Block Diagrams and Schematic Description This chapter describes the H/W block diagrams and schematic description of the OfficeServ 12 system. 4.1 H/W Block Diagram OfficeServ 12 Hardware block diagram is as follows: Base board Power Supply Unit +5 V (Input: AC 220 V)
4.2 Schematic Description This section provides schematic description on each part of the OfficeServ 12 system. 4.2.1 Power Supply Unit The PSU(Power Supply Unit) consists of the three main blocks described below: • Circuit supplying -55 VDC(Volts Direct Current), the system’s main power •...
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Caution on using battery DC 48 V(6~40 AH) batteries should be used for OfficeServ 12. If the capacity of the battery is too great, system malfunction may occur. If the capacity is too small, the system may not operate properly during power failures.
Those components require additional time for processing commands. The OfficeServ 12 system uses the /TA port of MPC 855T to make the CPU wait for the additional time needed. This port usually maintains low status, which allows the CPU to operate without any interruptions.
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The T-switch is the core of a digital PABX and is the most important part of the engine. Each switch controls gain through 8 steps. Since OfficeServ 12 is a small system, only four out of the eight highways are used.
QDASL(Quad Digital Adapter for Subscriber Loops) can control four digital key phones. TMC, DPLL, SIO OfficeServ 12 does not use the TMC(Trunk Module Controller), DPLL(Digital Phase Locked Loop), and SIO(Serial Input/Output) functions of the engine. 4.2.2.3 Reset Composed of various circuits, the system may malfunction due to internal or external reasons.
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WDRESET can either be disabled/enabled by external resistance, or an NMI Interrupt Request can be sent. 4.2.2.4 Memory The OfficeServ 12 system contains memories such as SRAM, SDRAM, NAND flash memory, and boot ROM. SRAM This SRAM(Static Random Access Memory) working memory must be backed up by battery.
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The data memory and clock circuit share a same backup battery. 4.2.2.8 Digital Phone Connection Interface (1DLI, 2HYB) The base board of OfficeServ 12 provides a single DLI circuit and two HYB(hybrid) circuits, supporting total three lines for connecting digital phones.
Figure 4.8 DLI Port Wiring Diagram 4.2.2.9 Single Line Phone Connection Interface (5SLI, 2HYB) The base board of the OfficeServ 12 system has five SLI circuits and two HYB(hybrid) circuits, supporting up to seven analog phones. Main devices of SLI are configured using QSLAC(Quad Subscriber Line Audio-processing Circuit) and SLIC(Subscriber Line Interface Circuit).
4.2.2.11 Music Source/Paging/Dry Contact Connection Interface (MISC) The base board of OfficeServ 12 provides a single MISC port. The functions of MISC are as follows: • One Music Channel internal or external Internal MOH: Melody chip, which is the default music source...
In any case, the minimum retention voltage required by devices is satisfied. 4.2.2.13 Trunk/MGI board Connection Connector The base board of OfficeServ 12 has a 50pin connector for mounting a trunk daughter board(3/4TRK, 2BRI), and two 40pin connectors for mounting a VoIP daughter board(MGI).
The PSU supplies -55 VDC and +5 VDC, and the constant-voltage supply circuit of the base board supplies -5 VDC. The OfficeServ 12 system receives +5 VDC and generates minus power by using the SMPS(Switching Mode Power Supply) technology. MC34063A is used as the main component.
4 MHz clock and /FOI foe used as a reference clock for implementing Multi-ISDN. 4.2.4 MGI Board A MGI daughter board can be equipped on the base board of OfficeServ 12. The MGI board converts voice to data, which is exchanged through a data network.
OfficeServ 12 Exploded View and Parts List This chapter describes the exploded view and parts list of the OfficeServ 12 system. 5.1 Exploded View The exploded view of the OfficeServ 12 system is as follows: Figure 5.1 Exploded View of OfficeServ 12...
5.2 Parts List The parts list of the OfficeServ 12 system is as follows: 5.2.1 Base Board Part No. Location Quantity Part Name Specification 0401-000116 D851-D855 DIODE-SWITCHING MMSD914T1, 100 V, 200MA, SOD-123, TP 0401-001099 D121, D381 DIODE-SWITCHING 1N4148WS, 75 V, 150 mA,...