Repair Instructions - Philips HTS7202/12 Service Manual

REPAIR INSTRUCTIONS

A
All Functions
are not working
Check a ll system all cable RE-i nsert and fix
YE S
is loose or bad IN T the cable
NO
Panel standby LED Check power board
NO
whether light BK 3V3 out
YE S
Check MA IN PC B Q106
and their conjoi nt part .
E
MP3 In
is not sound
Ch eck signal source an d
Ch eck signal source NO
their conjoint part whether
Wh ether output OK
OK.
YE S
Ch eck MAIN PC B
NO
Ch eck MA IN PC B IC 304 Pi n
R 345/R 346 and their
26/27 whether input ok .
conjoint part Wh ether OK.
2 - 3
A B C
All Functions All Functions AUX2 In
AUX1 In
are not working are not sound is not sound
is not sound
B
All Functions
are not sound
Ch eck MAIN PC B CN 1007 Check SW power and
NO
whether at PI N1-7 +31V conjoint part
and at R 5165 +12V .
YE S
Check MA IN PC B IC 5001 Ch eck MAIN PC B IC5001
NO Ch eck MA IN PC B IC 304 Pi n
IC5004and thei r conjoi nt IC5004 and their conjoint
part whether OK
part whether OK
YE S
Ch eck MAIN PC BQ 1007
Ch eck MAIN PC B IC5006
NO
and their conjoint part
PI N9.15.36.54
whether OK
whether at +3.3 V
YE S
Ch eck MAIN PC B IC501
Ch eck MAIN PC B
NO
pin12.24.37/pin16.28.42
L 502/L 501 Wh ether OK.
3.3V /1.8V whether OK
F
Tuner Function
is not sound
Ch eck MAIN PC B Ch eck MAIN PC B TU301
NO
TU101P in7/8 output PI N5whether is 5V and
whether OK. their conjoint part whether
OK.
YE S
Ch eck MA IN PC B IC 304
Ch eck MAIN PC B IC304 Pin 23/24 their conjoint part
NO
Pi n23/24 whether IN OK. whether OK.
MAIN UNIT REPAIR CHART
D E F G
MP3 In Tuner Function DISC Function
is not sound is not sound is not sound
C
AUX1 In
is not sound
Ch eck signal source an d
Ch eck signal source
NO
their conjoint part whether
Wh ether output OK
OK.
YE S
Ch eck MAIN PC B
NO
R 365/R 364 and their
9/10 whether input ok .
conjoint part Wh ether OK.
G
DISC Function USB Wire lines
is not sound are not function
Check USBW ire Li nes
Ch eck MAIN PC B CN 1006
cable and RB301
cable and their conjoint
part whether OK. Wh ether OK
YE S
Ch eck MAIN PC B IC501
and their conjoint part
whether OK.
2 - 3
J
H I
USB Wire lines USB
Power Supply
are not function is not function is not working
D
AUX2 In
is not sound
Ch eck signal source Ch eck signal source an d
NO
Wh ether output OK their conjoint part whether
OK.
YE S
Ch eck MAIN PC B
Ch eck MA IN PC B IC 304 Pi n
NO
7/8 whether input ok . R 308/R 309 and their
conjoint part Wh ether OK.
H
NO RE-i nsert RB301 and fi x
the cable
J
V CC Voltage Check Q912 Q913 IC 905
No Output
And Its Conjoint Part
Power Supply
is not working
-27V Voltage No
Check D919 Q907
And Its Conjoint Part
Working or Not
YE S
Al l Voltage No
12V Voltage Check D923 Q901
No Output
No Output
And Its Conjoint Part
5V Voltage
Check D922 Q906
YE S
No Output And Its Conjoint Part
Check F901
Bad Ca use Damage
BK 3V 3 Voltage Check R978 IC 906
No Output And Its Conjoint Part
No
No
Check Repair IC 901 IC 903
Check BK 3V 3 5V
Q909 IC 904 IC 906 And Its
Working or Not
CO NN CI RC UI T
I
USB
is not function
Check USB cabl e and RE-i nsert RB15 and fi x
NO
RB 15 Wh ether OK the cable