Samsung S5660 Block Diagram 7
Level
8.
Block Diagram
8-1.
Repair
3
8-1
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PCB Diagrams
8-2.
8-2-1.
Top
8-2
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8-2-1.
Bottom
8-3
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LOGIC
8-3.
8-3-1.
Power On
Power switch on
NG
Check the current
consumption
>= 100
mA?
Yes
Check the battery
voltage
>= 3.45?
Yes
Check the R410_T
P_PS_HOLD pin
S_HOLD
=2.6
V?
Yes
Check the clock at
OSC400
=32
KHz
NO
Download
NO
P
?
NO
NO
Change the battery
Check the PMIC
relatedtoPS_HOLD
Resolder OSC400
Yes
C441(VREG_MSMC1)=1.2V?
C440(VREG_MSMC2)=1.2V?
C439(VREG_MSME)=1.8V?
C410(VREG_MSMP)=2.6V?
C411(VREG_MSMA)=2.6V?
Yes
Check the clock
C117
=19.2
Mhz
?
Yes
Check the initial operation
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NO
Check the U400
NO
Check the clock generation circuit
8-4
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8-5
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8-6
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8-3-2.
LCD Working
Power Switch On
LCD Display
On?
Yes
NO
LCD FPCB
connector is co
rrectly connecti
ned?
Yes
F600, F601,
F602, F603,
F604, F605,
F606 Correctly
mounted?
correctly connect
NO
F600, F601, F602,
F603, F604, F605,
F606 Resolder
NO
Yes
LCD
Replace
Yes
C526
LED_P_26V=26V?
NO
Replace U505&Check
neighboring circuits
8-7
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8-8
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8-9
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8-3-3.
TSP
Operate TSP
NG
Check
TSP Connecting
YES
Change TSP Module
No Problem?
NO
Reconnecting TSP
NO
Change main PBA
END
8-10
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8-3-3.
Audio Working
Speaker Working
Operate speaker
NG
Check
Speaker
Connector
YES
Speaker break
down?
NO
NO
Resolder
YES
Change Speaker
Signal on in
L508, L509?
NO
Signal on in
C406, C407?
NO
Change main PBA
YES
YES
Resolder
L508,L509
SPK ASSY
Resolder
C406, C407
Replace U400
7
8-11
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AMP_POUT
AMP_NOUT
C519
L508
L509
C518
7
0
5
D
Z
SPK500
NC NC
11
12 13
22
10 10
NCNC
14
11
33 4 4
55 6 6
77 8 8
99
C524
8
0
5
D
Z
8-12
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8-13
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Receiver Working
Operate Receiver
NG
Check
Receiver
Connector
YES
Receiver break
down?
NO
Change main PBA
NO
Resolder
YES
Change Receiver
8-14
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MICW
orking
Operate MIC
NG
Pollute
MIC Hole?
NO
Signal on in
C503, C504
YES
Clean up
MIC hole
NO
?
Change UCP300
YES
Check Voltage
of L512, C508
L512&C508's
Voltage
YES
Signal on in
C513, C528,
R524
?
YES
Change main PBA
NO
NO
Resoldering
C513, C528
R524
8-15
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VMIC_BIAS_1.8V
L512
MIC500
POWER
POWER
GND
GND
OUT4OUT
C503
1
2
3
MIC_N
MIC_P
C504
R524
4
0
5
D
Z
C508
C513
C528
SHORT
8-16
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Stereo Headset Working
Hands-free stereo
headset
NG
NO
Level3Repair
YES
Check U506Button NG?
MIC NG?
NO
SPK NG?
NO
The End
YES
YES
Check
L501
YES
Resolder L501
Signal on
in ZD503?
NO
Signal on
in C408
C409?
NO
NO
Check U506
YES
Check L503, L505,
YES
Check R405, R406,
U400
Change Main PBA
8-17
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