Read Sony HT-RT5 Service Manual online
HT-RT5
36
SECTION 4
TROUBLESHOOTING
1. “PRTCT” is displayed on the fl uorescent indicator tube after turning the power on
“PRTCT”, “PUSH” and “POWER” is
display alternately in the fluorescent
indicator tube after turning the power
on.
display alternately in the fluorescent
indicator tube after turning the power
on.
Yes
No
No
Yes
Check the speaker (SP1 to SP5), and
replace the speaker (SP1 to SP5).
replace the speaker (SP1 to SP5).
“PRTCT” is not displayed on the
fluorescent indicator tube, when the
removing the speaker connection
connector (CN6001, CN6002) and
turning the power on.
fluorescent indicator tube, when the
removing the speaker connection
connector (CN6001, CN6002) and
turning the power on.
Pin 27, 28, 32, 35, 39 and 40 of IC6001
on the BAR-AMP board are short-circuit
to GND.
F3001, F3002, F3003 on the BAR-AMP
board are opened.
on the BAR-AMP board are short-circuit
to GND.
F3001, F3002, F3003 on the BAR-AMP
board are opened.
Yes
Replace the complete BAR-AMP board.
Not improve
Replace the switching regulator
(3L408W) (SWR1).
(3L408W) (SWR1).
Replace the following IC or fuse on the
BAR-AMP board.
IC6001 and IC6004
F3001, F3002 and F3003
BAR-AMP board.
IC6001 and IC6004
F3001, F3002 and F3003
2. The video of HDMI is not displayed normally
Each power supply is supplied.
The input voltage of the following is
about 7.4 to 8 V.
MB-1414 board: IC5014 pin 5 (VIN)
about 7.4 to 8 V.
MB-1414 board: IC5014 pin 5 (VIN)
Yes
Yes
Yes
Refer to “Power is not turned on”
on page 38.
on page 38.
No
No
No
No
Perform other analysis.
Yes
Yes
No abnormalities to CN5012 on the
MB-1414 board.
MB-1414 board.
Replace the complete MB-1414
board.
board.
No
Only the digital output (HDMI) is
affected.
affected.
No
Replace the complete MB-1414
board.
board.
Yes
Refer to “Power is not turned on”
on page 38.
on page 38.
The output voltage of the following
is 5 V.
MB-1414 board:
IC5014 pin 4 (VOUT)
is 5 V.
MB-1414 board:
IC5014 pin 4 (VOUT)
The input voltage of the following
is 3.3 V.
MB-1414 board:
IC5014 pin 1 (CONT)
is 3.3 V.
MB-1414 board:
IC5014 pin 1 (CONT)
Refer to “Power is not turned on”
on page 38.
on page 38.
Check the setting on the menu
screen.
screen.
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