Samsung MX-F730 Service Manual page 23

UCN1
VFD_CLK VFD_CLK
VFD_DO VFD_DO
(1)
MC-146(32. 768KHZ, 20PPM ) MC-146(32. 768KHZ, 20PPM )
TUNER_L TUNER_L
TUNER_R TUNER_R
TUGND TUGND
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UIC 3
UIC 1
X_TAL1 X_TAL1
32. 768H Z 32. 768H Z
4 4
1
Q0 Q0 Q3 Q3
2 2 3 3
Q1 Q1 Q2 Q2
DGND DGND
R2001 R2001
1KOHM 1KOHM
S-6415A42-M 3T1U S-6415A42-M 3T1U
3 3
VDD VDD
(1)
C N 1
* 5.4. MAIN P CB Top
R201 5 R201 5
1MOHM 1MOHM
P14 P14
P13 P13
IC2001 IC2001
1 1
/RESET,RESET /RESET,RESET
GND GND
<Fig. 4-1>
4. Troubleshooting
(1)
AIC 1
M5.1V_PW M5.1V_PW
DGND DGND
R2021 R2021
2.2KOHM 2.2KOHM
DGND DGND
TPTX TPTX
UART_RX UART_RX
UART_TX UART_TX
* 6.5. MAIN-3
4-3