Harman Kardon ONYX STUDIO 4 Service Manual

5-1
keys do not work
Go
Replace PCBA for main board.
Keys do not work
No
Yes
Yes
No
Yes
No
Yes
No
Replace the BT part or other load parts
Check the main board the BT module
(U9) other supply network load parts
(for example: BT_1.8V).
Check KEY signal from BT module (U9)
in main board.
Check from main board the BAT_3V7
and VCC_3V3 power supply is
normal?
Replace the key board.
Replace the old with the new KEY
board to the EUT working.
Instead of new 15pin line
Check 15pin FFC cable (XP701) to main
board of connect yes or not.?

Harman Kardon ONYX STUDIO 4 Specifications

General

Bluetooth version	4.2
Output power	4 x 15W (AC mode); 4 x 7.5W (Battery mode)
Battery type	3.7V/3000mAh Lithium-ion
Battery charge time	5 hours
Music playing time	Up to 8 hours
Frequency response	50Hz – 20kHz (-6dB)
Signal-to-noise ratio	80dB A-weighted
Weight	2061g
Supported profiles	A2DP 1.3, AVRCP 1.6, HFP 1.6
Power supply	19V/2A
Brand	Harman Kardon
Model	ONYX STUDIO 4
Product Type	Portable Bluetooth Speaker
Wireless Connectivity	Bluetooth
Water Resistance	No
Built-in Microphone	Yes
Auxiliary Input	Yes (3.5mm)
Color Options	Black, Blue, White
Transducers	2 x Woofer 75mm, 2 x Tweeter 20mm
Driver Size	Woofer 75mm, Tweeter 20mm