Kenwood FZDA07ELEF2 Service Manual page 11

Ref. No. Application / Function
IC611 Power supply IC for VFD
IC612 Buffer power supply IC for SPDIF
Q2 For LED9V power supply drive
Q3 Switch for ILL_DET-
Q6 For IGN detection
Q8 For navigation RST
Q9,10 For watch dog drive
Q341 For FAN10.5V power supply drive
Q342 Transistor for FAN10.5V power supply
Q343 Transistor for FAN10.5V power supply
Q344 For FAN10.5V power supply shortage protection circuit Q608 ON, ON when FAN10.5V output shortage
Q451 For LED9V power supply drive
Q452,453 Transistor for LED9V power supply
Q454 Transistor for LED9V power supply
Q501 FET for P-ON5 switching regulator (Two FETs)
Q502 FET for P-ON3.3 switching regulator (Two FETs)
Q504 For N_D3.3V output over voltage protection
Q505 For N_D5V output over voltage protection
Q601 P-ON2 SW (For P-ON8V)
Q602 P-ON2 SW (For P-ON8V)
Q603 Transistor for P-ON8V switching
Q604 FET for P-ON8V switching
Q605 For SW8V output over voltage protection
Q606 Switch for ILL_DET+
Q607 For FAN10.5V power supply shortage protection circuit On when PON_FAN is Hi
Q608 For FAN10.5V power supply shortage protection circuit ON when Q607 is ON
Q609 For video µ-com RST
Q610 For stopping the watch dog function (while writing software) ON while writing software
Q611 For stopping the watch dog function (while resetting)
Q615 SW for parking
Q616 SW for vehicle speed sensor
Q617 SW for parking
Q618 SW for vehicle speed sensor
Q621 SW for reverse signal
Q622 For V-MUTE
Q624 Reset SW for A07
Q626,627 SW for ND5V and ND3.3V
Q628 SW for ND5V and ND3.3V
Q629 SW for reverse signal
Q630 For LED9V power supply drive
Q634 For rear camera power supply switching
Q636 SW8VIC frequency switching
COMPONENTS DESCRIPTION
SW8V input, 16V output
ND3.3V input, 1.2V output
ON when ILL+ is Hi and ILL- is Lo
ON when Q2 is ON
ON when Hi input, open collector
ON when Hi input (RST)
OFF when the watch dog pulse is stopped
ON when P-ON is Hi
Input: SW_BU, Output FAN10.5V power supply
ON when Q341 is ON
On when Q2 is ON or when FAULT is Hi
Input: N_BTT, Output LED9V power supply
ON when Q451 is ON
On when N_D3.3V output is over voltage
On when N_D5V output is over voltage
SW of Q602
Turn ON P-ON8V
On when SW8V output is over voltage
On when ILL+ is Hi
ON while resetting
PKG: Low ON
SPD: Low ON
PKG: Low ON
SPD: Low ON
REV: Hi ON
VMUTE: Hi ON (MUTE)
SMRST: Hi, Reset: ON
P-ON2: Hi OFF (P-ON)
P-ON2: Hi ON
REV: Hi ON
ILLPWM: Hi ON or FULT: Hi ON
REV: Hi ON
F0SC: Hi ON 340kHz, Low 248kHz
FZDA07ELEF2/EREF2/MRHF2
Operation / Condition / Compatibility
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