Bose E4 manual Input clipping, No Standby and System indicators, Direct input is active

Page 7

8.0 E4 System Troubleshooting

8.2.4 Input clipping

If clipping is occurring at the input of an amplifier channel, the source LED will blink red.

8.2.6 No STANDBY and SYSTEM indicators

STANDY & SYSTEM LEDs are off - AC power is on

 

 

 

AMP OUTPUTS

 

 

SYSTEM

 

 

 

 

 

1

2

3

 

 

4

STATUS

 

 

 

 

 

 

 

 

 

 

 

 

STANDBY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIO SOURCES

 

 

 

 

 

 

DIRECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

 

 

4

INPUT

 

 

If this fault occurs:

Reduce the output gain of the source, or

Using the Installer™ software, reduce the input gain for the channel that is clipping.

8.2.5 Direct input is active

If the DIRECT INPUT LED is red:

Check that the DIRECT INPUT/CONTROL contact closure is in the closed position.

Check the device to which this input is connected.

 

 

 

AMP OUTPUTS

 

 

SYSTEM

 

 

 

 

 

1

2

3

 

 

4

STATUS

 

 

 

 

 

 

 

 

 

 

 

 

STANDBY

 

 

AUDIO SOURCES

 

 

 

 

 

 

DIRECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

 

 

4

INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is E4 unit

No

plugged into an

 

 

 

 

AC source?

 

 

 

Yes

 

 

 

 

 

 

 

 

 

Is the E4

No

POWER switch

 

 

 

 

set to ON?

 

 

 

Yes

 

 

 

 

 

 

 

 

 

Is STANDBY

Yes

 

 

indicator on?

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

Yes

Is SYSTEM STATUS

indicator red?

No

Is the unit properly

No

configured for the line

 

 

voltage?

 

 

Yes

 

 

 

 

 

 

Plug the E4 unit into an AC receptacle.

Set E4 POWER switch to ON.

Press the STANDBY switch on the E4 front panel.

Connect your PC to the E4 unit and read the Error Log.

Check the results of the Power On self test (POST).

Use the POST troubleshooting chart for course of action.

Set E4 POWER switch to OFF.

Verify that E4 unit is configured for the correct AC line voltage.

Verify that the fuse is good.

Verify that the AC receptacle is live.

Set POWER switch to ON.

Contact Bose

Customer Service.

64 of 80

Image 7
Contents FreeSpace E4 Series II Business Music System Declaration of Conformity Contents Contents Introduction E4 System TroubleshootingE4 hardware indicators System faultAMP Output Amplifier faultInput clipping No Standby and System indicatorsDirect input is active Power-on self-test results FreeSpace E4 system Error LogContents of the Error Log Hardware configurationAmplifier alarms using output voltage and current Amplifier alarmsInput and output alarm history Solving faults reported in the Error LogCommunications port error Common problemsNo audio in zone Bad sound in a zone User interface keypads do not operate correctlyTechnical assistance Auto Volume does not calibrateReporting software bugs and issues Customer supportFor Windows NT Restoring E4 Microcontroller Code Restoring E-4 Microcontroller Code Bose Product Sales Conditions
Related manuals
Manual 33 pages 3.85 Kb Manual 4 pages 8.35 Kb

E4 specifications

Bose has long been a leader in audio technology, and their remarkable Bose E4 model epitomizes this legacy. Designed for both professional musicians and discerning audiophiles, the E4 is engineered to deliver an unparalleled listening experience.

At the heart of the Bose E4 is its state-of-the-art audio performance. The headphones are equipped with advanced drivers that produce a balanced sound profile, ensuring clarity across all frequencies. This extends from deep, resonant bass to crisp, high-frequency notes, making them suitable for a wide range of music genres. The soundstage is expansive, allowing listeners to immerse themselves in the music as if they were in a live performance.

Comfort is a priority with the E4, featuring plush ear cushions that conform to the shape of the ears. The lightweight design reduces fatigue, making them ideal for long listening sessions or extended studio work. The adjustable headband provides a secure yet comfortable fit, enhancing the overall listening experience without compromising style or functionality.

The E4 also incorporates Bose's renowned noise-canceling technology. This advanced feature blocks ambient noise, allowing users to focus solely on their music or audio productions. Whether in a noisy environment or during travel, the noise-canceling capabilities help maintain audio integrity by minimizing distractions.

Another distinguishing characteristic is the durable construction of the E4. Crafted from high-quality materials, the headphones are designed to withstand the rigors of daily use, making them a long-lasting investment. The foldable design adds an element of portability, allowing users to easily store and transport them without damage.

Connectivity options are versatile with the E4, including both wired and wireless options. The inclusion of Bluetooth technology allows for seamless pairing with devices, providing the freedom to move without being tethered by cables. Additionally, the integrated microphone enables hands-free calling and voice assistant interaction, blending convenience with high-quality audio.

In conclusion, the Bose E4 headphones embody the perfect marriage of advanced technology and user-focused design. With exceptional sound quality, impressive noise cancellation, comfortable ergonomics, and durable construction, they stand out as a top choice for anyone serious about their audio experience. Whether for professional use or personal enjoyment, the Bose E4 delivers on every front, solidifying its place in the premium headphone market.