Appendix a, Flow chart: (for repair center use), 1) power start – BrightSign HD2000 Hardware Guide User Manual
Page 15: Ower, Tart, Appendix a flow chart: (for repair center use), No leds on, Brightsign hd2000
BrightSign HD2000
This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Roku assumes no
obligation regarding future manufacturing unless otherwise agreed to in writing.
www.rokulabs.com
© Roku 2006
Appendix A
Flow Chart: (for Repair Center Use)
(1) Power Start
Check RP15
Check U34,
L88, D26
Check D21 & D22
for shorts
Is the Voltage of
L80 = 5V?
Is the Voltage of
TP24 3.3V?
Is the Voltage across
D12 ~= 2V?
No
No
No
Yes
Yes
No LEDs
on
Is the Output power
adapter 5V DC
?
Replace Power
Adapter
No
Yes
Replace D12