Samsung Z540 Service Manual Trouble Shooting
7. Flow Chart of Troubleshooting
7-1. Power On
' Power On ' does not work
Yes
Check the Battery Voltage
is more than 3.3V
Yes
PAM200 pin57(PS_HOLD)
C237(VREG_MSMC) = 1.25V?
=2.6V?
Yes
Check the Clock at
OSC200=32KHZ
Yes
Yes
No
Change the Battery
No
Check the PMIC related to PS_HOLD
No
Resolder OSC200
No
Check the PMIC
C224(VREG_MSME) = 1.8V?
C220(VREG_MSMP) = 2.6V?
C217(VREG_MSMA) = 2.6V?
C210(VREG_TCXO) = 2.8V?
Yes
Check for the clock at
C207= 19.2MHz
Yes
Check the initial operation
Yes
END
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No
No
7-1
Check the PMIC
Check the clock generation circuit
(related to OSC700)
FlowChartofTroubleshooting
Power On
VREG_TCXO_2.8V
VREG_SYNT_2.8V
VREG_MSMC_1.25V
R227
VREG_MSME_1.8V
VREG_USB_3.3V
R226
VREG_USIM_3.0V
VREG_MSMP_2.6V
R225
VREG_BT_2.8V
VREG_MSMA_2.6V
VREG_RFRX_2.8V
VREG_RFTX_2.8V
C201
C202
R201
R200
PAM200
C200
V_IN
VBUS_5V_SW
EXT_5V_SW
14
VSW_5V
VCHG
2
L201
L200
12
27
VREG_5V
USB_VBUS
3
16
C203
R202
42
39
56
10
31
37
32
36
28
VSW_PA
50
VREG_PA
VREG_USB
VREG_MMC
VSW_MSME
VSW_MSMC
VREG_RUIM
VREG_MSME
VREG_MSMP
VREG_MSMA
VREG_MSMC
BAT_FET_N
CHG_CTL_N
ISNS_M 5 ISNS_P
ADC_BYP
VCOIN
USB_CTL_N
VBACKUP
VBAT
XTAL_IN
7
4
1
6
60
15
48
44
C205
C204
R203
C206
1
POS
BAT201
C227
C226
C225
C224
C223
C220
C219 R206
C218 C214
C217
C243
79
66
R228
7
7
2
74
SPKR_OUT_M
CBL1PWR_N
68
MMC_CLK
6
6
3 3 4
2
77
SPKR_BYP
VDD_SPKR
PON_RESET_N
CBL0PWR_N
9
TP201
JIG_ON_SW
PON_RESET_N
MMC_CMD
R230
5
5
4
30
G
G
G
G
29
RUIM_M_IO
26
MSM_SIM_IO
SIM_IO
9 10
11
12
33
35
VDD_PA
VDD_MSME
VDD_MSMC
RUIM_CLK
RUIM_IO
RUIM_M_CLK
38
34
MSM_SIM_CLK
SIM_CLK
V_IN
41
52
VDD_RUIM
RUIM_M_RST
40
43
MSM_SIM_RST
SIM_RST
65
54
VDD_ANA
VDD_MSM
RUIM_RST
SBDT
49
47
PMIC_SBDT
71
83
VDD_RF
VDD_MAIN
VDD_WLAN
SBCK
MSM_INT_N
SBST
59
51
PM_INT_N
PMIC_SBST
PMIC_SBCK
C236
C235
C234
R211
C233
C232
C242
C241 C238
C244
C239 C240
C237
C
N
7
8
C
N
6
8
D
N
G
5
8
3
D1
1
2
PS_HOLD
ADC_BOOTSW
R212
C216
C215 C221
C213
C212
C211
C210
C209
R205
C208
63
8
13
FLSH_DRV_N
USB_OE_N
USB_OE_MSM
VREG_MSMP_2.6V
21
GP1_DRV_N
USB_DAT
17
USB_DAT_MSM
75
78
76
23
22
25
SPKR_IN_P
VIB_DRV_N
SPKR_IN_M
LCD_DRV_N
KPD_DRV_N
SPKR_OUT_P
PS_HOLD
KPDPWR_N
USB_D_M
USB_D_P
USB_ID
USB_SE0
57
24
20
18
11
19
USB_D_P
USB_D_M
PHONE_ON
USB_SEO_MSM
C231
C230
R208
R207
8
8
SIM200
1
1
62
61
81
84
64
69
67
73
REF_BYP
REF_GND
REF_ISET
VREG_RFTX
VREG_SYNT
VREG_TCXO
VREG_WLAN
VREG_RFRX1
VREG_RFRX2
AMUX_IN1
AMUX_IN2
AMUX_OUT
TCXO_EN
TCXO_IN
REF_OUT
TCXO_OUT
SLEEP_CLK
XTAL_OUT
70
72
82
55
80
58
53
45
46
C207
R204
TP200
TCXO
TCXO_EN
AMUX_OUT
SLEEP_CLK
ADC_BOOTSW
BUFF_TCXO
OSC200
REF_OUT
C229
C228
R209
2
VREG_MSMP_2.6V
VREG_USIM_3.0V
R229
NEG
MMC_DATA
7-2
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VREG_RFTX_2.8V
FlowChartofTroubleshooting
C752
OSC700
12
8
1
2
B
B
V
OUT1
OUT2
2
V
1
2
W
W
S
S
G
G
4
6
3
VC
G
G
G
G
G
13
7
11 9
C759 C760
10
14
5
1
R728
C753
C755
R730
R719
R721
C757
DCS_VCO_EN_N
GSM_VCO_EN_N
MOD_CP
C756
7-3
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FlowChartofTroubleshooting
7-2. Initial
Initial Failure
Yes
TP 201 or TP "RST"
(PON_RESET_N) ="H"?
Yes
Is HDC400 pin 11, 25
(LCD RESET) OK?
Yes
END
No
Check the PMIC
No
Check the LCD RESET Circuit
7-4
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D2(12)
D2(13)
D2(14)
D2(15)
8
IN
N
G
D
17
OUT
9
CAM_RESET
I2C_SDA
KYPD_9
5
C
2
4
6
C
2
4
1
C
1
4
5
0
C
4
2
C
1
LCD & CAM CONNECTOR (60PIN)
4
C
0
1
4
6
C
0
4
7
0
4
C
8
C
0
4
9
C
0
4
2
C
2
4
3
C
1
4
4
C
1
4
55
57
59
53 54
55 56
57 58
59
60
56
58
60
5
C
1
4
6
C
1
4
KEYSENSE(4)
SUB_EL_CS
AMP_ON
I2C_SCL
KYPD_7
WE2_N
51
39
41
43
45
53
47
49
47 48
49
50
50
48
45 46
46
37 38
39
41 42
43 44
37
38
40
40
42
44
51
52
52
54
D2(3)
5
7
IN
IN 6 IN
OUT
OUT
OUT
OUT
13
12
11
10
MAIN_LCD_CS
nRESET_LCD
MLCD_DIM
A2(2)
31 32
33 34
35 36
23 24
25
27
29
21 22
31
33
35
23
25 26
27 28
29
19
21
30
32
34
36
24
20
22
26
28
30
2
3
IN 1 IN
IN 4 IN
OUT
OUT
OUT
15
14
16
SLCD_RESET
17 18
19
11 12
13 14
15 16
5
78
9
5
7
9
17
11
13
15
16
18
10
12
14
6
8
20
6
10
C847
C848
F401
KYPD_5
3
3
1
4
2
4
2
1
1
HDC400
2
FlowChartofTroubleshooting
D7
3
TA404
C403
1
0
4
L
2
0
4
L
C402
C400
TA401
VCC_MOTOR_3.3V
VREG_MSMP_2.6V
VBATT_LCD
4
0
0
L
F804
1
2
IN1
IN2
OUT2
OUT1
8
7
CAMIF_DATA(7)
CAMIF_DATA(6)
3
4
IN3
IN4
OUT4
OUT3
5
6
CAMIF_DATA(4)
CAMIF_DATA(5)
9
GND GND
C
1
4
F805
CAMIF_MCLK
CAMIF_PCLK
CAM_VGA_EN
CAM_MEGA_EN
CAMIF_HSYNC
EAR1O_P
SPK_R
1
2
3
IN1
IN2
OUT2
OUT1
7
8
CAMIF_DATA(3)
CAMIF_DATA(2)
4
IN3
IN4 OUT4
GND
GND
OUT3
6
5
CAMIF_DATA(0)
CAMIF_DATA(1)
9 10
F803
10
9
16
OUT
IN
1
D2(11)
12
11
10
OUT
IN
5
D2(7) EAR1O_N
OUT
IN 6 IN
D2(6)
7
OUT
D
D2(5)
9
OUT
F400
N
G
17
IN
8
D2(4)
14
13
15
OUT
OUT
OUT
IN
IN
IN
4
3
2
D2(9) D2(1)
D2(10) CAM_PWR_ON D2(2)
D2(8) SPK_L D2(0)
7-5
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FlowChartofTroubleshooting
MMC_DATA
R229
VREG_USIM_3.0V
VREG_MSMP_2.6V
R209
C232
C233
R211
C234
C235
SIM_RST
ADC_BOOTSW
C236
PS_HOLD
1
2
MSM_SIM_RST
PMIC_SBCK
PMIC_SBST
PMIC_SBDT
PM_INT_N
D1
1
2
4
1
2
3 3 4
G
12
G
11
G
G
9 10
5
6
7
8
5
6
7
8
R230
R228
SIM_CLK
SIM_IO
MMC_CMD
MMC_CLK
MSM_SIM_CLK
PON_RESET_N
MSM_SIM_IO
JIG_ON_SW
PHONE_ON
TP201
USB_D_M
SIM200
R207
R208
USB_D_P
C230
C231
USB_SEO_MSM
C228
C229
VREG_MSMP_2.6V
REF_OUT
USB_DAT_MSM
ADC_BOOTSW
USB_OE_MSM
AMUX_OUT
3
R212
5
8
G
D
N
6
8
N
C
7
8
N
C
47
51
43
49
59
SBST
RUIM_RST
SBCK
SBDT
MSM_INT_N
VDD_WLAN
VDD_MAIN
VDD_MSM
VDD_ANA
VDD_RF
71
65
54
83
52
C237
C239 C240
38
40
RUIM_CLK
RUIM_M_RST
VDD_MSME
VDD_RUIM
41
35
26
34
30
RUIM_IO
RUIM_M_CLK
RUIM_M_IO
VDD_MSMC
VDD_PA
33
29
PON_RESET_N
VDD_SPKR
9
CBL0PWR_N
SPKR_BYP
77
68
74
C244
C241 C238
C242
V_IN
C243
66
PS_HOLD
CBL1PWR_N
SPKR_OUT_M
SPKR_OUT_P
79
57
KPDPWR_N
SPKR_IN_M
75
24
78
20
USB_D_M
SPKR_IN_P
76
17
18
11
13
19
80
82
USB_DAT
USB_D_P
USB_ID
USB_OE_N
USB_SE0
REF_OUT
AMUX_IN2
AMUX_OUT
FLSH_DRV_N
KPD_DRV_N
LCD_DRV_N
GP1_DRV_N
VIB_DRV_N
REF_ISET
REF_GND
REF_BYP
25
62
23
22
21
63
8
C208
C209
C210
C211
C212
C213
C215 C221
C216
C217
C218 C214
C219 R206
C220
BAT201
NEG
POS
2
1
C206
OSC200
BUFF_TCXO
EXT_5V_SW
R202
SLEEP_CLK
TCXO_EN
TCXO
TP200
R204
C207
46
58
53
45
55
70
72
XTAL_IN
XTAL_OUT
TCXO_OUT
SLEEP_CLK
TCXO_EN
TCXO_IN
AMUX_IN1
VREG_RFRX1
VREG_RFRX2
VREG_MSMA
VREG_WLAN
VREG_TCXO
VREG_SYNT
VREG_RFTX
81
84
64
69
67
73
61
R205
44
56
1
ADC_BYP
VREG_MSMP
50
R203
C204
C205
60
15
48
6
7
4
VCOIN
USB_CTL_N
VBACKUP
VBAT
ISNS_M 5 ISNS_P
BAT_FET_N
CHG_CTL_N
VREG_MSMC
VREG_MSME
VREG_RUIM
VSW_MSMC
VSW_MSME
VREG_MMC
VREG_USB
VREG_PA
VSW_PA
10
31
37
32
36
28
42
39
L200
L201
VBUS_5V_SW
C203
V_IN
16
3
VCHG
USB_VBUS
VREG_5V
VSW_5V
27
12
R226
C200
2
PAM200
14
R200
R201
C202
C201
VREG_RFTX_2.8V
VREG_RFRX_2.8V
VREG_MSMA_2.6V
VREG_BT_2.8V
R225
VREG_MSMP_2.6V
VREG_USIM_3.0V
VREG_USB_3.3V
C223
C224
C225
C226
C227
VREG_SYNT_2.8V
VREG_TCXO_2.8V
VREG_MSME_1.8V
R227
VREG_MSMC_1.25V
7-6
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FlowChartofTroubleshooting
7-7
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FlowChartofTroubleshooting
7-3. Sim Part
Phone can't access SIM Card
Phone can't access SIM Card
SIM200 pin 6 = "H"?
After Power ON,
Check SIM_CLK Signal on
SIM200 pin3 in a few second
Yes
Yes
Yes
Yes
No
No
No
No
Check the SIM POWER
Check the SIM POWER
Check the 32KHz OSC
Check the 32KHz OSC
Yes
Yes
After SIM card insert,
SIM 200 pin 2 = "H(SIM_RST)"?
Yes
Yes
Check the SIM Card
Check the SIM Card
Yes
Yes
END
END
No
No
Replace PBA
Replace PBA
7-8
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This Document can not be used without Samsung's authorization
FlowChartofTroubleshooting
VREG_TCXO_2.8V
VREG_SYNT_2.8V
VREG_MSMC_1.25V
R227
VREG_MSME_1.8V
VREG_USB_3.3V
R226
VREG_USIM_3.0V
VREG_MSMP_2.6V
R225
VREG_BT_2.8V
VREG_MSMA_2.6V
VREG_RFRX_2.8V
VREG_RFTX_2.8V
C201
C202
R201
R200
PAM200
C200
V_IN
VBUS_5V_SW
EXT_5V_SW
14
2
12
VSW_5V
VREG_5V
VCHG
USB_VBUS
16
L201
L200
10
31
37
27
32
36
28
VSW_PA
3
C203
R202
50
42
39
56
VREG_PA
VREG_USB
VREG_MMC
VSW_MSME
VSW_MSMC
VREG_RUIM
VREG_MSME
VREG_MSMP
VREG_MSMC
VREG_MSMA
ADC_BYP
BAT_FET_N
CHG_CTL_N
ISNS_M 5 ISNS_P
4
C204
R203
USB_CTL_N
15
XTAL_IN
VCOIN
VBACKUP
VBAT
1
7
6
44
60
48
C205
C206
1
POS
BAT201
C227
C226
C225
C224
C223
C220
C219 R206
C218 C214
C217
C243
79
66
R228
7
7
2
74
SPKR_OUT_M
CBL1PWR_N
68
MMC_CLK
6
6
2
77
SPKR_BYP
CBL0PWR_N
9
TP201
JIG_ON_SW
R230
5
5
3 3 4
4
V_IN
C242
C241 C238
C244
C239 C240
C237
71
41
65
54
83
52
33
35
29
VDD_RF
VDD_PA
VDD_ANA
VDD_MSM
VDD_RUIM
VDD_MSME
VDD_MSMC
RUIM_CLK
RUIM_M_CLK
38
34
40
VDD_MAIN
VDD_WLAN
N
C
8
7
N
C
8
6
G
N
D
8
5
MSM_INT_N
RUIM_M_RST
RUIM_RST
SBCK
SBDT
SBST
59
43
49
47
51
R212
VDD_SPKR
PON_RESET_N
RUIM_IO
RUIM_M_IO
26
30
3
D1
1
2
PM_INT_N
PMIC_SBDT
PMIC_SBST
PMIC_SBCK
MSM_SIM_IO
PON_RESET_N
MSM_SIM_RST
MSM_SIM_CLK
MMC_CMD
SIM_RST
SIM_CLK
SIM_IO
9 10
G
G
11
G
12
G
PS_HOLD
ADC_BOOTSW
C236
C235
C234
R211
C233
C232
C216
C215 C221
C213
C212
C211
C210
C209
R205
C208
63
8
21
23
22
78
76
62
61
81
84
64
69
67
73
REF_BYP
REF_GND
REF_ISET
VREG_RFTX
VREG_SYNT
VREG_TCXO
VREG_WLAN
VREG_RFRX1
VREG_RFRX2
AMUX_IN1
AMUX_IN2
AMUX_OUT
TCXO_EN
TCXO_IN
XTAL_OUT
46
C207
REF_OUT
TCXO_OUT
SLEEP_CLK
70
72
82
55
80
58
53
45
R204
TP200
TCXO
TCXO_EN
AMUX_OUT
SLEEP_CLK
ADC_BOOTSW
BUFF_TCXO
OSC200
REF_OUT
C229
C228
75
25
SPKR_IN_P
VIB_DRV_N
SPKR_IN_M
GP1_DRV_N
LCD_DRV_N
KPD_DRV_N
FLSH_DRV_N
SPKR_OUT_P
PS_HOLD
KPDPWR_N
USB_DAT
USB_D_M
USB_D_P
USB_ID
USB_OE_N
USB_SE0
57
24
17
20
18
11
13
19
USB_D_P
USB_D_M
PHONE_ON
USB_OE_MSM
USB_DAT_MSM
USB_SEO_MSM
C231
C230
R208
R207
VREG_MSMP_2.6V
8
8
SIM200
1
1
R209
2
VREG_MSMP_2.6V
VREG_USIM_3.0V
R229
NEG
MMC_DATA
7-9
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FlowChartofTroubleshooting
7-10
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This Document can not be used without Samsung's authorization
7-4. Speaker Part(Melody)
Speaker does not work
U600 pin7,32 = 2.7V?
FlowChartofTroubleshooting
Yes
No
Resolder or replace U401
Yes
Check the Clock signal
at Pin 1 of U600
(13.5MHz)
Yes
U600 pin 4 ≒ 2.7V?
(When u100 operate)
Yes
Is Speaker working?
Yes
END
No
No
No
Check the clock generation circuit
(related to U401 and U600)
Resolder u100
Change the Speaker
7-11
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FlowChartofTroubleshooting
Speaker
BUFF_TCXO
MELODY_IRQ
MELODY_RESET
R607
C626
HPOUT_L
HPOUT_R
YMU_VDD_2.7V
C627
C625
R600
C603
R611
R612
C602
C624
OE2_N
A2(1)
MELODY_CS
WE2_N
D2(0)
D2(1)
1
4
3
D
G
D
1
V
O
I
CLKI
2
LED
3
/IRQ
4
/RST
5
NC
6
PLLC
7
VDD
O
N
O
VSS
M
8
/
9
L
T
VREF
U
O
P
G
H
5
3
9
0
2
2
3
3
3
0
S
D
R
A
C
/
R
W
/
/
U600
R
T
U
2
1
3
O
P
Q
Q
Q
E
E
E
H
0
2
3
4
1
1
1
1
1
1
VREG_MSMP_2.6V
U401
VCC
1
S
2
3
AB0
6
B1
5
GND
4
3
8
7
6
2
3
2
2
0
1
G
D
D
5
2
D
D
V
P
S
5
1
SPOUT2
S
SPOUT1
S
V
P
S
9
0
8
R
MTR
D2
4
2
D3
3
2
D4
2
2
D5
1
2
D6
0
2
D7
9
1
8
1
7
1
G
6
6
1
3
EAR_SW
D2(2)
D2(3)
D2(4)
D2(5)
D2(6)
D2(7)
KEYSENSE(4)KYPD_MEMO
7-12
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