GE Logiq P5 Service Manual

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DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
Section 5-4 - Main Board Detail 5 - 9
Section 5-4
Main Board Detail
The Front End generates the strong burst transmitted by the probes as ultrasound into the body. It also 
receives weak ultrasound echoes from blood cells  and body structure, amplifies these signals and 
converts them to an digital signal. Figure 5-8   LOGIQ™ P5 Main board Structure
Figure 5-9   LOGIQ™ A5/A5Pro Main board Structure
P3RLY ASSY
CL1TRX ASSY
ACWD ASSY...

GE HEALTHCARE
DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
5 - 10Section 5-4 - Main Board Detail
Section 5-4      Main Board Detail (cont’d)
The digital representation of this signal is presented to the Mid Processor section.
• P3RLY (Relay) : This P3RLY is for LOGIQ™ P5  or LOGIQ™ A5/A5Pro with 3port upgrade kit. 
P3RLY Assy contains 3 connectors for probe in terface and arrays of relays for switchable 
connection. High voltage multiplexer provide connection between 128 signal of probe and...

GE HEALTHCARE
DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
Section 5-4 - Main Board Detail 5 - 11
5-4-1 P3RLY and P2RLY 
P3RLY ASSY contains of 3 probe connectors and provides switchable connection between probes and 
64ch transmitters/receivers. P2 RLY contains 2 probe connector
The main function of P3RLY ASSY and P2RLY ASSY is as follows.
- 3-to-1 selectors with three probe ports for P3RLY board.
- 2 to 1 selector with two probe ports for P2RLY board
- Interface with FEBUS (control bus)
-...

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DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
5 - 12Section 5-4 - Main Board Detail
5-4-2 CL1TRX and BL1TRX
5-4-2-1 Overview
CL1TRX have two PWAs. Both are CTX PWA and  L1BFC PWA. CTX generates the TX pulse and 
L1BFC receives the echo signal to amplify it and co nvert the amplified echo signal into digital signal. 
These RF digital signals delayed and summed by beam-forming in OQx2 ASICs.
BL1TRX have also two PWAs, BTX PWA and L1BFC  PWA. The difference between BTX and CTX is...

GE HEALTHCARE
DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
Section 5-4 - Main Board Detail 5 - 13
5-4-2-3 Preamp in CL1TRX/BL1TRX
The Pre-Amplifier rece ives and amplifies each 64 echo signals.  Then, all 64 echo signals (from 0 to 
63ch) are outputted to the Analog to Digital converter to delay and sum. Following 32 echo signals (from 
32 to 63ch) are simultaneously outputted to the ACWD  ASSY via the ASIG ASSY. 
The preamp module have main three blocks: Pre-amp and Gain Control and Mode...

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DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
5 - 14Section 5-4 - Main Board Detail
5-4-2-4 Delayed Sum Module
The Delayed Sum is the receive beam former and consist of 4 OQx2 ASICs.  Each OQx2 ASIC has 16 
receiving channels. The each digital beamforming output  data of the OQx2 transferred to the next OQx2 
and the output  of final OQx2 transferred to the SYSCONP M(SYSCONCM)to make it into image data 
through some digital signal processing.
Delay control data for receive beam...

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DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
Section 5-4 - Main Board Detail 5 - 15
5-4-2-5 Transmit Pulse Generation Block
The CTX in CL1TRX generate bipolar transmit pulse and have dual driver for each scan mode, for 
example, low voltage driver for PWD or CFM and  high voltage for B. This board has 64 channels 
transmit signal drivers, Transmit Pulse Generator  ASIC, control FPGA and so on. Transmit pulse are 
generated by TPG2 ASIC. Each TPG2 ASIC makes 16  channels signals, so...

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DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
5 - 16Section 5-4 - Main Board Detail
5-4-3 SYSCONPM(SYSCONCM)
5-4-3-1 Overview
SYSCONPM(SYSCONCM) ASSY includes Mi d processor and Back End Processor. DSP generate the 
scan control data and the FEBC FPGA adjust the ti me and manipulate the FEBUS to control Front End 
boards and APS/APS Pro. CPDI tran sfer the Image or Doppler data to the Image Ring buffer through 
DSP. Finally the data goes to the SOM module to make displaying image or...

GE HEALTHCARE
DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
Section 5-4 - Main Board Detail 5 - 17
5-4-3-3 PERIPHERAL BLOCK
• IDE Interface :
SYSCONPM(SYSCONCM) Assy has SATA bus for HDD  and PATA bus for DVD-R drive interface.
- Primary Master SATA: HDD
- Secondary Master PATA: DVD-R Drive
• DISPLAY (VGA, DVI, TV input) BLOCK
Basically SOM support 2 kinds of display output. One is  LVDS level for Plat panel display, and other is 
analog RGB for CRT monitor. 
To obtain advanced and stable quality...

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DIRECTION 5394141, REVISION 1LOGIQ™ P5 SERVICE MANUAL
5 - 18Section 5-4 - Main Board Detail
5-4-3-6 POWER CONTROL BLOCK
ON/OFF power sequence control is needed to prevent system to boot up abnormally, and protect to 
loose important diagnostic information of patient from unexpected power failure. 
• Live power 
: Whenever main AC powe r is supplied, Microprocessor on the SYSCON PM(SYSCONCM) must live 
always by live power supp lied by APS/APS Pro Assy. 
• System boot-up sequence
Peripheral...