Car Audio Service Manual
SCD-250U
6
10K(*) 10K(*)
5
IPOD CIRCUITRY
+5V IP-L IP-R AGND GND
4
NO:
C301 R301 101($)
3
5K6($)
R302 R303
2
Blueto...
Description
SCD-250U
6
10K(*) 10K(*)
5
IPOD CIRCUITRY
+5V IP-L IP-R AGND GND
4
NO:
C301 R301 101($)
3
5K6($)
R302 R303
2
Bluetooth circuit
ANT102 BT-ANT 10K C625 100uF 1K 8 C624 CON602 C628 7 1K 2 Q603 100K R647 R652 1 100uF C623 5 2K2 AIO3 42 AIO0 41 PIO6 40 2.2uF 2 10K 1 R640 10K 682 R641 R642 R648 100R 120R R649 C630 MMBT3906 100uF R651 1K Q604 C621 100uF C622 PIO0 39 104(**) PIO2 38 100K C627 47K 390K 390K 390K 390K MCU78 SUB-MUTE R605 R606 R607 R608 MUTE D602 IN4148 D601 IN4148 100uF R639 PIO1 37 BT101 MB0302($) C321 PIO10 34 PIO11 33 NRESET 32 SPI_CSB 31 CSB MO-SI MI-SO R538 R539 R534 R536 CLK SPI-GND R949 R956 EQ SPI_MOSI 30 SPI_MISO 29 SPI_CLK 28 R942 100R R948 R957 R947 100R R958 R945 100R R946 R959 100K 800A(**) 100K 800A(**) 100K 800A(**) GND 27 GND C322 PIO9 35 PIO3 36 R650 4558 3 4 47K R643 Q605 KRC231S 682 6 123 U604 R645 C626 104 R644 R646 100R PB+ 2 1
1
A3 SHEET
TX RX CHAR CON501 R563 R564 C302 C303 225($) 225($) 7K5($) 5K6($) 6 5 U301 5K6($)
R304 R305
IPOD-7PIN(*)
1
2
3
4
5
6
7
2K2(*)
F502 1.1A/16V(*) 7 8 C304 C305 225($) 225($) UTC4558($) 5K6($) 4 1
22K($) 22K($)
C523 104(*)
MCU/TX MCU54 C522 MCU53 MCU/RX NC 3 2 R306 1 44 ANT VDD18 43 L301 1 GND C310 105($) 3 AOUT_P_L 4 AOUT_N_R 5 AOUT_P_R C317 105($) 7 AIN_N_R 8 AIN_P_R 9 AIN_N_L 10 AIN_P_L
1M($)
7K5(*)
TU1 RADIO CIRCUITRY
7K5(*) 1N4001(*) D504 1K(*) R543 2K2(*) R546 R560 R562 800A(*) 800A(*) 800A(*) MIC/IN 1K($) 2 10UH($) 225(*) 102(*) 102(*) 10K(*) 10K(*) C548 R544 R545 800A(*) Q507 S8050(*)
R308...
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