Sony HT-NT5, Service Manual

Page: 39 / 74

HT-NT5
39
“PRTCT”, “PUSH” and “POWER” is
alternately displayed on the front
panel display after turning the
power on.
“PRTCT”, “PUSH” and “POWER” is
alternately displayed on the front
panel display, when removing the
speaker connection connector
(CN6004, CN6005, CN6009) on the
AMP board and turning the power on.
Check and replace the speaker
(SP1, SP2, SP3, SP4, SP5, SP6),
check and repair the connection
cable with speaker.
Yes
Yes
No
IC6004 and IC6007 on the AMP
board is not burned out.
Yes
Replace the IC6004 and IC6007 on
the AMP board.
Yes
Yes
Replace the IC6004 and IC6007 on
the AMP board.
Yes
Replace the IC6004 and IC6007 on
the AMP board.
No
The sound is not outputted.
No
Fuse (F6001) on the AMP board
conduct the electricity.
(It is almost 0
:
)
Yes
Replace the fuse (F6001) on the
AMP board.
No
No
The voltage of the following is 3.3 V.
MB-1509 board:
IC5001 pin 96 (DRIVER_SD)
The voltage of the following is 12 V.
AMP board:
IC6004 pin 1 (GVDD_AB), 2 (VDD)
IC6007 pin 1 (GVDD_AB), 2 (VDD)
Yes
No
The voltage of the following is 3.3 V.
MB-1509 board:
IC5001 pin 50 (DC_DET)
OUT_A line (pin 39, 40), OUT_B
line (pin 35), OUT_C line (pin 32),
and OUT_D line (pin 27, 28) of
IC6004 and IC6007 on the AMP
board do not short-circuits or opens.
– From page 38 –
Check the IC6002 on the AMP
board. If IC6002 on the AMP board
is abnormality, replace the IC6002
on the AMP board.
If IC6002 on the AMP board is no
abnormality, replace the complete
MB-1509 board.
No
No
The PWM signal is inputted
INPUT_A line (pin 5), INPUT_B line
(pin 6) , INPUT_C line (pin 14) and
INPUT_D line (pin 15) of IC6004
and IC6007 on the AMP board.
The video of HDMI is not displayed
normally.
No
No
Yes
Replace the complete MB-1509
board.
Yes
When connecting the TV monitor to
the main unit by the HDMI cable,
pressing the [HOME] button on the
remote commander to enter the
KRPHPHQXVHOHFWLQJWKH³6HWXS´ĺ
³$XGLR6HWWLQJV´ĺ³$XGLR2XWSXW´
and setting to the “Speaker” or
“S HDMI”, the sound is
outputted.
Check the IC6005 and IC6008 on
the AMP board. If IC6005 and
IC6008 on the AMP board is
abnormality, replace the complete
AMP board.
If the AMP board is no abnormality,
replace the complete MB-1509
board.
Yes