Samsung YP-R1 Service Manual page 20

CLK_SELECT
CKIL
GND
Place this part to CPU as close as possible
U604
JTAG_RST
CODEC;MCLK
BOOT_MODE0
AND GATE
U401
NC7SV08P5X
PWR_IN_DDCON
1 A
2 B
EXT_PWR
3 GND
GND
REAL TIME CLOCK
U504
C402
7pF
2
X402
32.768KHz
GND
3
OUT
C403
7pF
U402
2
GND
 MAIN PCB Bottom, page 6-3
Samsung Electronics
R407
CPU_RST
1K
6
4.7K
R401
GND
R411
22
AUD_MCLK
U504
P_3.0V
Vcc
5
R406
22K
Y
4
7 10 : NAND BOOT
11 : USB BOOT
 MAIN CPU-2, page 7-3
P_3.0V
P_3.0V
32.768KHZ_OUT
1
1 32KO
6
2 XOUT
IN
1
3 XIN
4 VSS
2
1
U801
P_3.0V
R404
22K
X403
GND
24MHz
1 4
2 3
GND
BOOT MODE
BOOT_MODE1
BOOT_MODE0
INN_BATT
U701
KDS121V
D401
U402
S-35392A
VDD 8
SDA 7 I2C_DAT0
I2C_CLK0
SCL 6
INT2
5
GND
U701
<Fig. 4-3>
1.10V
Troubleshooting
GND
CLK_SELECT
6
BOOT_MODE0
BOOT_MODE1
7
GND
JTAG_RST
JTAG_TDO
JTAG_TDI
JTAG_TMS
GND
JTAG_TCK
JTAG_RTCK
EARPHONE_DET
BT_UART_RX0
BT_UART_TX0
BT_UART_RTS0
BT_UART_CTS0
NAND_SELECT
DEVICE_DET
U401
UART_TX1
UART_RX1
ARM_DEBUG
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
U101
U401
7
 MAIN PCB Top, page 6-1
U101
MCIMX37
PMIC_VSTBY
T19
PMIC_PWRFAIL
R16
SRT
CKIL
R19
CKIH
N18
PER
P15 CLK_SS
WDOG_RST/PMIC_RDY/G
W7
RESET_IN_B
N14
POR_B
N15
BOOT_MODE0/AUD_MCLK
P16
P18 BOOT_MODE1
M19 XTAL
NVC
N19 EXTAL
PER
R1 THDIODE
R18 TEST_MODE PER
USB
F18
GPANAIO
JTAG_MOD
P13
JTAG_DE_B
T14
JTAG_TRSTB
R13
JTAG_TDO
V16
PER
JTAG_TDI
W16
JTAG_TMS
W17
JTAG_TCK
V17
JTAG_RTCK
W18
T8 GPIO1_31/WDOG_RST_B
UART2_RXD_MUX/GPIO2
R9
UART2_TXD_MUX/GPIO2
V8
UART2_RTS_MUX/GPIO2
P9
W8 UART2_CTS
W9 GPIO2_27
V9 GPIO2_26
T9
UART_TX1/GPIO2_25
V10
UART_RX1/GPIO_24
PE
PER3
T6
CSPI2_SCLK/I2C3_SCLK
W4
CSPI2_SS1/GPIO3_8
V5
CSPI2_SS0/GPIO3_7
W5 CSPI2_MISO/GPIO3_6
R7
CSPI2_MOSI/I2C3_SDA/G
T7
CSPI1_SCLK/I2C1_SCL/G
V6 CSPI1_SS1/GPIO3_3
R8
CSPI1_SS0/GPIO3_2
W6
CSPI1_MISO/GPIO3_1
CSPI1_MOSI/GPIO3_0
V7
4-5