Samsung YP-R1 Service Manual page 19

Troubleshooting
32.768KHZ_OUT
R407
1K
U604
GND
GND
GND
AUD_MCLK
BOOT MODE
R406 BOOT_MODE1
22K
BOOT_MODE0
10 : NAND BOOT
11 : USB BOOT
INN_BATT
P_3.0V
KDS121V
P_3.0V
D401
U402
S-35392A
VDD
1 32KO 5 8
2 XOUT SDA 7
SCL
3 XIN 6
4 VSS INT2 5
4-4
P_3.0V
R404
22K
CLK_SELECT
BOOT_MODE0
BOOT_MODE1
X403
24MHz
1 4
2 3
U504
JTAG_RST
JTAG_TDO
JTAG_TDI
JTAG_TMS
GND
JTAG_TCK
JTAG_RTCK
EARPHONE_DET
BT_UART_RX0
 MAIN CPU-2, page 7-3
BT_UART_TX0
BT_UART_RTS0
BT_UART_CTS0
NAND_SELECT
DEVICE_DET
UART_TX1
UART_RX1
TOUCH INTERFACE
CLK/DAT <--I2C_3
TOUCH_CLK
TOUCH_INTR
TOUCH_CE
NAND_R/B4
TOUCH_DAT
NAND_R/B3
NAND_R/B7
NAND_R/B5
NAND_R/B6
I2C_DAT0
I2C_CLK0
U402
GND
PWR_IN_DDCON
EXT_PWR
U301
MCIMX37
1.10V
PMIC_VSTBY
T19
PMIC_PWRFAIL
R16
GND
CKIL
R19
GND
N18 CKIH
CLK_SS
P15
WDOG_RST/PMIC_RDY/GPIO3_28
W7
N14 RESET_IN_B
N15 POR_B
BOOT_MODE0/AUD_MCLK2
P16
P18 BOOT_MODE1
M19 XTAL
N19 EXTAL
R1 THDIODE
R18
TEST_MODE
4
F18 GPANAIO
GND
JTAG_MOD
P13
JTAG_DE_B
T14
JTAG_TRSTB
R13
JTAG_TDO
V16
JTAG_TDI
W16
JTAG_TMS
W17
JTAG_TCK
V17
JTAG_RTCK
W18
T8 GPIO1_31/WDOG_RST_B_DEB
UART2_RXD_MUX/GPIO2_31
R9
UART2_TXD_MUX/GPIO2_30
V8
P9 UART2_RTS_MUX/GPIO2_29
UART2_CTS
W8
W9 GPIO2_27
V9
GPIO2_26
T9
UART_TX1/GPIO2_25
V10
UART_RX1/GPIO_24
ARM_DEBUG
4
T6
CSPI2_SCLK/I2C3_SCLK/GPIO3_9
W4
CSPI2_SS1/GPIO3_8
V5
CSPI2_SS0/GPIO3_7
W5
CSPI2_MISO/GPIO3_6
R7 CSPI2_MOSI/I2C3_SDA/GPIO3_5
T7 CSPI1_SCLK/I2C1_SCL/GPIO3_4
V6
CSPI1_SS1/GPIO3_3
R8
CSPI1_SS0/GPIO3_2
W6
CSPI1_MISO/GPIO3_1
CSPI1_MOSI/GPIO3_0
V7
U801
 MAIN PCB Top, page 6-1
<Fig. 4-2>
NC7SV08P5X
1 A Vcc
5
2 B
Y
3 GND 4
SRTC_POW
REAL TIME CLOCK
PER_9
PER_9
NVCC_OSC
32.768KHZ_OUT
C402
PER4
7pF
2 1
PER9
X402
USBPHY
32.768KHz
IN
1
GND
3
NVCC_IPU
2
OUT
C403
7pF
2 1
PER8
GND
 MAIN CPU-2, page 7-3
PER2
4
NVCC_CNTR
U701
SD1_CMD/CSPI3_MOSI/GPIO1_16
SD1_CLK/CSPI3_SCLK/GPIO1_17
SD1_DATA0/CSPI3_MIOS/GPIO1_18
PER13
SD1_DATA3/CSPI2_SS0/GPIO1_21
PER3
NVCC_EMI
5
Samsung Electronics
BOOT MODE
R406 BOOT_MODE1
22K
BOOT_MODE0
10 : NAND BOOT
GPIO1_0/I2C2_SCL
11 : USB BOOT
GPIO1_1/I2C2_SDA
GPIO1_2
GPIO1_3
PER4
GPIO1_4
GPIO1_5/USB_PWR
GPIO1_6/CLK0/AUD_MCLK
INN_BATT GPIO1_7
PER_2
P_3.0V
LCD_DOTCLK/GPIO3_30
KDS121V
P_3.0V
LCD_CS/GPIO3_13
D401
LCD_RDY/GPIO1_30
LCD_RS/GPIO3_12
LCD_RD/GPIO3_11
LCD_WR/GPIO3_10
LCD_VSYNC/GPIO3_29
LCD_HSYNC/GPIO3_31
U402
S-35392A
DISP1_DAT0
5
DISP1_DAT1
DISP1_DAT2
1 32KO VDD 8
DISP1_DAT3
BLUE
DISP1_DAT4
2 XOUT SDA
7
DISP1_DAT5
DISP1_DAT6
3 XIN SCL
6
DISP1_DAT7
DISP1_DAT8
4 VSS INT2
5
DISP1_DAT9
DISP1_DAT10
DISP1_DAT11
GREEN
DISP1_DAT12
DISP1_DAT13
DISP1_DAT14
DISP1_DAT15
DISP1_DAT16/ETM_D0
DISP1_DAT17/ETM_D1
DISP1_DAT18/ETM_D2
DISP1_DAT19/ETM_D3
DISP1_DAT20
DISP1_DAT21
RED
DISP1_DAT22
U401
DISP1_DAT23
EIM_CS0/GPIO2_0
EIM_CS1/GPIO2_1
ETM_CLK/GPIO_10
EIM_RW/GPIO1_9
ETM_CTL/GPIO_D13
SD1_DATA1/GPIO1_19
SD1_DATA2/GPIO1_20
CSPI3_MOSI/GPIO1_22
CSPI3_SCLK/GPIO1_23
CSPI3_MISO/GPIO1_24
GPIO1_25
GPIO1_26
U101
PER14
GPIO1_27
I2C1_CLK/GPIO2_12
I2C1_DAT/GPIO2_13
UART3_RXD_MUX/GPIO2_14
UART3_TXD_MUX/GPIO2_15
UART3_R_RTS/GPIO2_16
UART3_CTS/GPIO2_17
PER6
GPIO2_18
GPIO2_19
AUD_DAO
AUD_DAI
AUD_BCLK
AUD_LRCK
U1
T2
R5
T1
R4
R2
P5
P4
F1
N5
N2
N6
P1
P2
G2
H4
N1
N4
M4
M1
M2
M5
M6
L2
L1
L4
K1
L5
K2
L6
K5
J2
GND
J1
K6
H1
J4
H2
J5
G1
J6
F2
G4
H6
G5
H5
T16
T18
U18
U19
V19
V18
N9
R11
N11
P10
W10
R10
M14
M16
V4
W3
W2
V3
T5
V2
V1
R6
U2
T4