Chenbro SR105 Plus operation manual

SR105 Plus Series

Server Chassis User Manual

January 2020 Version 2.3

A document provides an overview of product features, functions, architecture, and support specifications.

SR105 Plus Series

DISCLAIMERS

No license (express or implied, by estoppel or otherwise) to any intellectual property rights is granted by this document.

Chenbro disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness

for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or

usage in trade.

This document contains information on products, services and/or processes in development. All information provided here is subject

to change without notice. Contact your Chenbro representative to obtain the latest Configuration Guide.

The products and services described may contain defects or errors known as errata which may cause deviations from published

specifications. Current characterized errata are available on request.

Chenbro, and the Chenbro logo are trademarks of Chenbro Micom Co., Ltd. in the worldwide.

*Other names and brands may be claimed as the property of others

© 2019 Chenbro Micom Co., Ltd.

SR105 Plus Series

Table of Contents

Table of Contents .......................................................................................................................................... 3

List of Figures ................................................................................................................................................ 4

List of Tables ................................................................................................................................................. 5

1. Product Overview.............................................................................................................................. 6

1-1 Front Panel .................................................................................................................................. 7

1-2 Back Panel ................................................................................................................................... 8

1-3 Security Features ......................................................................................................................... 9

1-4 Front Control Panel ................................................................................................................... 10

1-5 Chassis Dimensions ................................................................................................................... 11

1-6 Interior View ............................................................................................................................. 12

1-7 System Level Environmental Specifications ................................................................................ 13

1-8 System Packaging ..................................................................................................................... 14

2. System Components Installation and Removal ................................................................................ 15

2-1 Side Cover Installation ............................................................................................................... 15

2-2 Front Bezel Installation .............................................................................................................. 16

2-3 5.25” Device Installation ............................................................................................................ 17

2-4 HDD Cage Installation ................................................................................................................ 19

2-5 Optional Fan (Add-In-Card Area) Installation.............................................................................. 24

2-6 Rear Fan Maintenance ............................................................................................................... 25

2-7 Power Supply Installation .......................................................................................................... 26

3. Backplane ....................................................................................................................................... 27

3-1 Storage Backplane Options ........................................................................................................ 28

3-2 3.5” 4-Port 12Gbps Mini-SAS HD Backplane ............................................................................... 29

3-3 3.5” 4-Port 12Gbps SAS/SATA Backplane .................................................................................... 32

4. Maintenance and Service ................................................................................................................ 35

SR105 Plus Series

List of Figures

Figure 1 Front panel (enclosed) ................................................................................................................ 7

Figure 2 Front panel (open) ...................................................................................................................... 7

Figure 3 Back panel with redundant PSU .................................................................................................. 8

Figure 4 Back panel with single PSU ......................................................................................................... 8

Figure 5 Key lock and Kensington slot location ......................................................................................... 9

Figure 6 Intrusion switch location ............................................................................................................ 9

Figure 7 Front control panel ................................................................................................................... 10

Figure 8 Front control panel ................................................................................................................... 10

Figure 9 Chassis dimensions ................................................................................................................... 11

Figure 10 Chassis components ................................................................................................................. 12

Figure 11 Side cover installation ............................................................................................................... 15

Figure 12 Bezel installation ...................................................................................................................... 16

Figure 13 Bezel removal ........................................................................................................................... 16

Figure 14 5.25” device blank removal ...................................................................................................... 17

Figure 15 5.25” device side rail installation .............................................................................................. 17

Figure 16 5.25” device installation ........................................................................................................... 18

Figure 17 3.5” internal HDD cage installation ........................................................................................... 19

Figure 18 3.5” hot-swap HDD cage installation ......................................................................................... 19

Figure 19 3.5” hot-swap HDD cage fan maintenance step-1 ..................................................................... 20

Figure 20 3.5” hot-swap HDD cage fan maintenance step-2 ..................................................................... 20

Figure 21 3.5” hot-swap HDD tray removal .............................................................................................. 21

Figure 22 3.5” hot-swap HDD tray installation .......................................................................................... 21

Figure 23 3.5” HDD installation (tool-less type) ........................................................................................ 22

Figure 24 3.5” HDD installation (screw type) ............................................................................................ 22

Figure 25 2.5” HDD installation (screw type) ............................................................................................ 23

Figure 26 Optional fan installation ........................................................................................................... 24

Figure 27 Optional fan removal ................................................................................................................ 24

Figure 28 Rear fan maintenance step-1 .................................................................................................... 25

Figure 29 Rear fan maintenance step-2 .................................................................................................... 25

Figure 30 Single PSU installation .............................................................................................................. 26

Figure 31 Redundant PSU installation ...................................................................................................... 26

Figure 32 Drive tray LED identification ..................................................................................................... 27

Figure 33 Backplane front view ................................................................................................................ 29

Figure 34 Backplane rear view ................................................................................................................. 30

Figure 35 Backplane front view ................................................................................................................ 33

Figure 36 Backplane rear view ................................................................................................................. 33

SR105 Plus Series

List of Tables

Table 1 Chenbro SR105 Plus specifications ............................................................................................... 6

Table 2 Front control panel .................................................................................................................... 10

Table 3 System environmental specifications summary .......................................................................... 13

Table 4 System packing information ....................................................................................................... 14

Table 5 Product weight information ....................................................................................................... 14

Table 6 Drive power LED/activity LED behavior ...................................................................................... 27

Table 7 Backplane specifications ............................................................................................................ 29

Table 8 Connector and pin header function description ......................................................................... 30

Table 9 Backplane specifications ............................................................................................................ 32

Table 10 Connector and pin header function description ......................................................................... 34

SR105 Plus Series

1. Product Overview

The SR105 chassis has been modified to support both tool-less 3.5” HDD tray and PCIe 3.0 slot, and transformed into feature-

advanced SR105 Plus. Beneath the chassis, an information sticker reads revision and manufacturing code, necessary for technical

support.

Table 1 Chenbro SR105 Plus specifications

Feature

Description

MB Form Factor

 SSI EEB (12” x 13”)

Dimension

(Dx W x H)

 533.0 x 198.0 x 425.0 (mm)
 20.98” x 7.80” x 16.73” (w/o bezel)

Drive Bay

 3 x 5.25" External, 4 x 3.5" Hot-swap (Option), 4 x 3.5” Internal (Option)

Storage Backplane

 1 x 3.5" 4-port 12Gbps Mini-SAS HD Passive Backplane
 1 x 3.5" 4-port 12Gbps SAS/SATA Passive Backplane

PSU Form Factor

 PS/2 Single or N+1 Redundant

Indicator

 1 x Power Status, 2 x LAN Activity, 1 x HDD Status, 1 x System Alarm

Front Control

 1 x Power On/Off, 1 x System Reset, 1 x Alarm Mute, 2 x USB2.0/USB3.0 (Option)

Cooling Fan

 HDD Cage: 80 x 25 mm (1), PCI: 80 x 25 mm (1) (Option), Rear: 120 x 25 mm (1)

System Security

 Intrusion Switch, Key Lock, Kensington Slot

Expansion Slot Opening

 7 x Full Height (5 x Full Length + 2 x Half Length)

Net Weight

 9.0 kg/19.82 lb

Gross Weight

 11.0 kg/24.23 lb

Cubic Feet

 3.31

Container Loading

 20’: 315, 40’: 651, 40’H: 720 (Single Packing)

Slide Rail

 Supported

SR105 Plus Series

1-1 Front Panel

Figure 1 Front panel (enclosed)

A. 5.25” Storage Drive Bay

B. Front Control Panel

C. USB Port Blank

Figure 2 Front panel (open)

A. Bezel Door

B. 3.5” Storage Drive Bay

C. Front Control Panel

D. USB3.0

SR105 Plus Series

1-2 Back Panel

Figure 3 Back panel with redundant PSU

A. 1+1 Redundant PSU

B. Rear I/O

C. Rear Fan

D. Expansion Slot Opening

Figure 4 Back panel with single PSU

A. PS/2 Single PSU

B. Rear I/O

C. Rear Fan

D. Expansion Slot Opening

SR105 Plus Series

│ 9

1-3 Security Features

Figure 5 Key lock and Kensington slot location

Figure 6 Intrusion switch location

A. Key Lock

B. Side Cover Lock

C. Kensington Slot

D. Intrusion Switch

SR105 Plus Series

│ 10

1-4 Front Control Panel

Figure 7 Front control panel

Figure 8 Front control panel

Table 2 Front control panel

Label

ICON

Indicator, button or connector

A Power Button

B LAN1, LAN2 Activity LED

C Power LED

D

HDD Activity LED

E

Fan Alarm LED

F

System Reset Button

G

Fan Alarm Reset Button

SR105 Plus Series

│ 11

1-5 Chassis Dimensions

Figure 9 Chassis dimensions

SR105 Plus Series

│ 12

1-6 Interior View

Figure 10 Chassis components

A. 3.5” HDD Cage

B. Power Supply Unit

C. Fan Assembly (HDD Cage)

D. 5.25” Storage Drive Bay

E. PCIe Fan (Option)

F. System Board

SR105 Plus Series

│ 13

1-7 System Level Environmental Specifications

The following table defines the system level specifications under operating and non-operating environments.

Table 3 System environmental specifications summary

Parameter

Specification

Temperature

Operating

5º C to 35º C (41º F to 95º F)

Temperature

Non-Operating

-40º C to 70º C (-40º F to 158º F)

Humidity

Non-Operating

50% to 90%, non-condensing with a maximum wet bulb of 28° C (at temperatures
from 25° C to 35° C)

Unpackaged
Shock

Non-Operating

Trapezoidal, 25 g, velocity change is based on product weight

Vibration

Operating

5 Hz @ 0.0002 g2/Hz to 350 Hz @ 0.0002 g2/Hz
Input acceleration is 0.26 g RMS
10 minutes per axis for all 3 axes on all samples
Random control limit tolerance is ± 3 dB

Sag & Bow

Non-Operating

Tolerance analysis among rack, rail and chassis
Actual on rack test with EIA Go-NoGo fixture

EMI
Pre-scan

Radiated Emissions

CISPR CLASS A (under 6 dB):
30~1000 MHz vertical/horizontal
1G~6G GHz vertical/ horizontal
1G~18G GHz vertical/horizontal

RVI

Operating

HDD class

 Class 1: Highest performance, reliability, and data integrity
 Class 2: A second tier of performance, reliability, and data integrity

HDD I/O throughput degradation SPEC
Pass/Fail Criteria

 No functional failure during test or post-test diagnostics
 Requirement to pass test is based on IOMeter data throughput (in IO’s per

second) expressed as a percent of Test HDD maximum theoretical baseline
performance

 Class1: > 90% of baseline for 4K random writes and > 80% of baseline for

128K sequential writes

 Class2: > 85% of baseline for 4K random writes and > 75% of baseline for

128K sequential writes

 Mix: > 80% of baseline for 4K random writes and > 70% of baseline for

128K sequential writes

Packaged
Vibration

Non-Operating

ISTA (weight over 68 kg, 1B; weight equal or less than 68 kg, 1A)

Packaged
Drop

Non-Operating

Drop height change is based on product weight
Non-palletized product:
 Investigation: Test requirement is 6 face drops, 8 corner drops and 12 edge

drops for a total of 26 drops

 Validation: Test requirement is 6 face drops, 2 corner drops and 3 edge

drops for a total of 11 drops

Palletized product: (Both investigation and validation)
 Perform two bottom drops at the specified height, 10 bottom drops at one

half of the specified height

 Perform 4 rotational edge drops (one per edge) at the specified height

SR105 Plus Series

│ 14

1-8 System Packaging

The original Chenbro packaging, where the server system is delivered, is designed to provide protection to a fully configured system

and tested to meet ISTA (International Safe Transit Association) Test Procedure 1A. The packaging is also designed to be reused for

shipment after system integration has been completed.

The original packaging includes the shipping box, and various protective inner packaging components, which are designed to function

together as a protective packaging system. When reused, all of the original packaging material must be used, including box and each

inner packaging component. In addition, all inner packaging components MUST be reinstalled in the proper location to ensure

adequate protection of the system for subsequent shipment.

Table 4 System packing information

Part Number

Single/Bulk

Form Factor (mm)

Support Level

387-10569-2100A0

Single

315 x 651 x 720

L5

NOTE: The design of the inner packaging components does not prevent improper placement within the packaging assembly.

There is only one correct packaging assembly that will allow the package to meet the ISTA (International Safe Transit Association)

Test Procedure 1A (2008). Failure to follow the specified packaging assembly instructions may result in damage to the system

during shipment.

Table 5 Product weight information

NOTE: A L5 system does not include motherboards, processors, memory, drives, or add-in cards. It is the system

configuration as shipped from Chenbro. Weights of integrated system (system configurations that include the items
above) will vary depending on the final system configuration.

Product

Unpackaged Net Weight

（kg）

Packaged Gross Weight

（kg）

Unpackaged Net Weight

(lb)

Packaged Gross Weight

(lb)

SR105 Plus

9.0

11.0 19.82

24.23

SR105 Plus Series

│ 15

2. System Components Installation and Removal

SR105 Plus supports up to 4 x 3.5” hot-swap SAS/SATA HDD or 4 x 3.5” Internal SAS/SATA HDD. Support for different storage and

peripheral options will vary depending on the system model and/or available accessory options installed.

2-1 Side Cover Installation

Figure 11 Side cover installation

1. Insert the cover along the bottom grooves.

2. Place down the cover toward the chassis.

3. Secure the thumb screws on the top and bottom of chassis.

SR105 Plus Series

│ 16

2-2 Front Bezel Installation

Figure 12 Bezel installation

1. Lean the right side of the bezel on the front chassis.

2. Fully attach the bezel on the front of the chassis, and make sure the two internal latches are up.

3. Push down the bezel until it is secured.

Figure 13 Bezel removal

1. Lift the two internal latches up.

2. Detach the bezel tabs and remove the bezel.

SR105 Plus Series

│ 17

2-3 5.25” Device Installation

Figure 14 5.25” device blank removal

1. Press two sides of the latch of the blank to release the blank as shown.

2. Pull the blank out.

Figure 15 5.25” device side rail installation

1. Take the reserved side rails located inside the drive slot.

2. Attach and secure the side rails on both sides of the 5.25” device.

SR105 Plus Series

│ 18

Figure 16 5.25” device installation

1. Insert the 5.25” device into the drive bay.

Note: Make sure both side rails are clipped on the latch.

SR105 Plus Series

│ 19

2-4 HDD Cage Installation

Figure 17 3.5” internal HDD cage installation

1. Insert the fan into the reserved slot.

2. Insert the HDD cage into the chassis.

3. Secure the thumb screws on the four sides of the HDD cage.

4. Plug the fan power connector in the system board.

Figure 18 3.5” hot-swap HDD cage installation

1. Insert the HDD cage into the chassis.

2. Secure the thumb screws on the four sides of the HDD cage.

SR105 Plus Series

│ 20

Figure 19 3.5” hot-swap HDD cage fan maintenance step-1

Figure 20 3.5” hot-swap HDD cage fan maintenance step-2

1. Unplug the power connector from the backplane.

2. Release the fan module latch and pull the fan module out of the fan cage.

3. Remove the tool-less fan holder as shown and replace the fan.

4. Insert the fan module into the fan cage.

5. Make sure the power connector go through the hole on the other side of the fan cage.

6. Plug the power connector in the backplane.

SR105 Plus Series

│ 21

Figure 21 3.5” hot-swap HDD tray removal

1. Press the tray button to release the tray.

2. Pull the lever to remove the tray from the HDD cage.

Figure 22 3.5” hot-swap HDD tray installation

1. Insert the HDD tray into the cage.

2. Push down the lever to secure the HDD tray.

SR105 Plus Series

│ 22

Figure 23 3.5” HDD installation (tool-less type)

1. Engage two embossed pins with the side dimples on the HDD as shown.

2. Carefully push down the other side of the HDD until another two embossed pins and side dimples lock into place.

NOTE: Due to degraded performance and reliability concerns, the use of the 3.5” drive tray as a 2.5” drive tray is intended to

support SSD type storage devices only. Installing a 2.5” hard disk drive into the 3.5” drive tray cannot be supported.

Figure 24 3.5” HDD installation (screw type)

1. Align the front of HDD with the anchor point on the tray.

2. Assemble 3.5” HDD with tray by four screws as shown.

SR105 Plus Series

│ 23

Figure 25 2.5” HDD/SSD installation (screw type)

1. Align the front of HDD/SSD with the anchor point on the tray .

2. Assemble 2.5” HDD/SSD into the tray by three screws from the bottom as shown.

NOTE: Dedicated screw type is required for 2.5” HDD/SSD Installation, Chenbro P/N: 384-14602-3143A0.

SR105 Plus Series

│ 24

2-5 Optional Fan (Add-In-Card Area) Installation

Figure 26 Optional fan installation

1. Attach the fan with the tool-less fan holder as shown.

2. Insert the fan module into the reserved fan slot.

NOTE: Please notice the arrow on the fan holder indicating the rear of the chassis.

3. Plug the power connector in the system board.

Figure 27 Optional fan removal

1. Unplug the power connector.

2. Release the fan module latch and pull the fan module out.

3. Remove the tool-less fan holder as shown and replace the fan.

SR105 Plus Series

│ 25

2-6 Rear Fan Maintenance

Figure 28 Rear fan maintenance step-1

Figure 29 Rear fan maintenance step-2

1. Lift up the fan module latch at the bottom of the fan module without release.

2. Push the fan module down to remove it from the chassis.

3. Remove the fan from the tool-less fan holder as shown and replace the fan.

4. Secure the fan module by aligning four embossed pins of it with four holes on the chassis, and pushing it upward as shown.

SR105 Plus Series

│ 26

2-7 Power Supply Installation

Figure 30 Single PSU installation

1. Place the PSU inside the chassis, and ensure the alignment for four screw holes of PSU with the bracket of the chassis.

2. Secure the four screws as shown.

Figure 31 Redundant PSU installation

1. Place the PSU inside the chassis, and ensure the alignment for four screw holes of PSU with the bracket of the chassis.

2. Secure the four screws as shown.

SR105 Plus Series

│ 27

3. Backplane

Each drive tray includes separate LED indicators for drive activity and drive status. Light pipes integrated into the drive tray direct light

emitted from the LEDs mounted next to each drive connector on the backplane to the drive tray faceplate, making them visible from

the front of the system.

Figure 32 Drive tray LED identification

Table 6 Drive power LED/activity LED behavior

LED

ICON

LED

Color

Behavior

Condition

A Power LED

N/A

Stay off

Fault

Blue

Solid on

Present

B Activity LED

Green

Solid on

Access

Red

Solid on

Failure

1Hz blink

Rebuild

4Hz blink

Locate

NOTE: The drive activity LED is driven by signals from the drive itself. Drive vendors may choose to operate the activity LED

differently from what is described in the table above. Should the activity LED on a given drive type behave differently than what

is described, customers should take the drive vendor specifications as a reference for the specific drive model to determine

what the expected drive activity LED operation should be.

SR105 Plus Series

│ 28

3-1 Storage Backplane Options

SR105 Plus supports the below bac kplanes:

 1 x 3.5” 4-port 12Gbps Mini-SAS HD backplane
 1 x 3.5” 4-port 12Gbps SAS/SATA backplane

All available SAS/SATA backplanes include the following common features:

 12Gbps SAS and 6Gbps SAS/SATA
 29-pin SFF-8680 12Gbps rated drive interface connectors, providing both power and I/O signals to attached devices
 Hot swap support for SAS/SATA devices
 I2C interface from a 4-pin connector for device status communication to the BMC over SMBus
 LEDs to indicate drive activity and status for each attached device

SR105 Plus Series

│ 29

3-2 3.5” 4-Port 12Gbps Mini-SAS HD Backplane

Table 7 Backplane specifications

Specification

Host Interface

Mini-SAS HD (SFF-8643)

HDD Interface

SFF-8680 (SAS 29-pin)

Hot-Swap

Yes, allows users to replace devices online

Display

LED indicates storage device status
Power LED – Off (Fault)

– Blue (Present)
Activity LED – Green on (Access)
– Red on (Failure)
– Red 1Hz blink (Rebuild)
– Red 4Hz blink (Locate))

Environment Monitor

Temperature sensor TMP75

Connector

1. 1 x Mini-SAS HD

2. 4 x SFF-8680

3. 4 x big 4-pin power connector for +5V & +12V from power supply

4. 1 x pin header 2.00 mm (1 x 3)

5. 1 x pin header 2.00 mm (2 x 3)

6. 1 x pin header 2.54 mm (2 x 3)

7. 1 x pin header 2.54 mm (2 x 5)

8. 1 x 4-pin Wafer 2.50 mm

9. 2 x 2-pin Wafer 2.54 mm

10. 1 x 4-pin Wafer 2.54 mm

11. 1 x I2C

Dimension (L x W x H)

106.0 x 114.0 x 2.4 (mm)

Material

FR4 4 layers

Figure 33 Backplane front view

A. HDD_00

B. HDD_01

C. HDD_02

D. HDD_03

SR105 Plus Series

│ 30

Figure 34 Backplane rear view

Table 8 Connector and pin header function description

Label

Connector

Description

Drawing

A

Mini-SAS HD

For connecting to a mainboard or HBA, this Mini-SAS HD connector is
applied. A proper cable selection is essential as well to make sure good
signal integrity, which can be maintained for the whole connection path
from a mainboard or HBA/RAID card to the HDD devices.

B

Power

These two connectors are used to power four 3.5” hard disks, connected

to this backplane, and each can ensure that all drives are supplied with
stable power inputs. If the chassis fan is also powered by fan header
(JF01), this configuration is highly recommended.

C

Fan

There are two 4-pin headers for the PWM fan, and it is an alternative
solution that the chassis fan can be powered and monitored by this
backplane instead of a motherboard. If the chassis fan is connected to
a mainboard, users need to disable the fan monitoring function of
backplane by DIP switch (SW1).

D

Signal
Indicator

The event LED with red/black wire is located on the front bezel of SR105
Plus and can be configured through this pin header.

E

Power
Fail
Mute

Transfer mute signal from a backplane to PSU.

F

Power
Fail
Alarm

Send alarm signal to PSU.

G

Buzzer

Buzzer will alarm when fan and temperature become abnormal.

H

DIP Switch

The settings of on-board hardware monitor can be controlled and
configured through this DIP switch. It can manage the functions of
PWM fan & temperature threshold.

SR105 Plus Series

│ 31

Label

Connector

Description

Drawing

I

I2C

The motherboard can monitor HDD temperature and fan status
through this connector. However, the I2C connector on the
motherboard side is dependent on vendors, so please contact our field
application engineers to fully utilize this feature.

SR105 Plus Series

│ 32

3-3 3.5” 4-Port 12Gbps SAS/SATA Backplane

Table 9 Backplane specifications

Specification

Host Interface

SATA 7-pin

HDD Interface

SFF-8680 (SAS 29-pin)

Hot-Swap

Yes, allows users to replace devices online

Display

LED indicates storage device status
Power LED – Off (Fault)

– Blue on (Present)
Activity LED – Green on (Access)

– Red on (Failure)

– Red 1Hz blink (Rebuild)
– Red 4Hz blink (Locate)

Environment Monitor

Temperature sensor TMP75

Connector

1. 4 x SATA

2. 4 x SFF-8680

3. 4 x big 4-pin power connectors for +5V, +12V from power supply

4. 1 x pin header 2.0 mm (1 x 3)

5. 1 x pin header 2.0 mm (2 x 3)

6. 1 x pin header 2.54 mm (2 x 3)

7. 1 x pin header 2.54 mm (2 x 5)

8. 1 x 4-pin Wafer 2.5 mm

9. 2 x 2-pin Wafer 2.54 mm

10. 1 x 4-pin Wafer 2.54 mm

Dimension (L x W x H)

106.0 x 114.0 x 2.4 (mm)

Material

FR4 4 layers

SR105 Plus Series

│ 33

Figure 35 Backplane front view

A. HDD_00 C. HDD_02

B. HDD_01 D. HDD_03

Figure 36 Backplane rear view

SR105 Plus Series

│ 34

Table 10 Connector and pin header function description

Label

Connector

Description

Drawing

A

SATA/SAS

For connecting to a mainboard, this SATA/SAS 7-pin
connector is applied. A proper cable selection is
essential as well to make sure good signal integrity can
be maintained for the whole connection path from
mainboard HDD devices.

B

Power

These two connectors are used to power four 3.5” hard

disks, connected to this backplane, and each can
ensure that all drives are supplied with stable power
inputs. If the chassis fan is also powered by fan header
(JF01), this configuration is highly recommended.

C

Fan

There are two 4-pin headers for the PWM fan, and it is
an alternative solution that the chassis fan can be
powered and monitored by this backplane instead of
motherboard. If the chassis fan is connected to
mainboard, users need to disable the fan monitoring
function of backplane by DIP switch (SW1).

D

Signal Indicator

The event LED with red/black wire is located on front
bezel of SR105 Plus and can be configured through
this pin header.

E

Power
Fail
Mute

Transfer mute signal from a backplane to PSU.

F

Power
Fail
Alarm

Send alarm signal to PSU.

G

Buzzer

Buzzer will alarm when fan and temperature become
abnormal.

H

DIP Switch

The settings of on-board hardware monitor can be
controlled and configured through this DIP switch. It
can manage the functions of PWM fan & Buzzer
On/Off.

I

I2C

The motherboard can monitor HDD temperature and
fan status through this connector. However, the I2C
connector on the motherboard side is dependent on
vendors, so please contact our field application
engineers to fully utilize this feature.

SR105 Plus Series

│ 35

4. Maintenance and Service

DOA (Dead on Arrival)

If the products are found Defect On Arrival, please contact Chenbro’s regional sales or CQE and indicate the defective status via email

along with product photos and description. You may need to return the defective item by request.

The customer should ensure that the products are Defect On Arrival for up to three months from Chenbro’s shipping date and the

damage is not caused by shipping or failures resulting from accident, misuse, abuse, neglect, mishandling, misapplication,

modification, improper operation, improper repair or rework. CHENBRO is not responsible for the cost of replacement including the

delivery cost.

CHENBRO also reserves the right to examine the DOA products. If the damage of DOA products is caused by improper action as

described above, the customer will be liable for paying the related charge having occurred or paying the fee of the replacements if

the DOA products are totally scrapped.

TECHNICAL SUPPORT

Please provide following information when you apply our technical support:

⚫ Product model name and/or part number
⚫ Product serial number and bar code
⚫ Buzzer beeping pattern and/or failure LED flashing pattern
⚫ Detailed and specific questions

You may also contact Chenbro’s regional technical supports as below: www.chenbro.com

CENBRO MICOM CO., LTD.

Email: [e-mail]

Tel: [phone]

Fax: [phone]

CHENBRO MICOM (USA) INC.

Email: [e-mail]

Tel: [phone]

Fax: [phone]

CHENBRO GmbH

Email: [e-mail]

Tel: + 49-2154-8142730

Apply a RMA
number

Return the product for
repair

Receive service
charge notice

Receive the repaired
product