Kenwood DNX 7240 BT Service Manual

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DDX6034/6034M/6054fl 034BT/7034BTMN 14

DNX7000EX/7140/724OBT/734OBT
COMPONENTS DESCRIPTION

Ref. No. Application / Function Operation / Condition / Compatibility
I04 Regulator 1.8V regulator
I05 Regulator 3.3V regulator
ICZOO F ROM QVGA MODEL (MP) for Mstar FW
ICZOO F ROM VGA MODEL (MP) for Mstar FW
I0201 Chroma and Gamma T/C scalar Control LCD module
I0203 SD RAM For Video signal storage
I0400,401 Op amp For VCOM amplierr
Q1 Switch SW to change the free run frequency of DC/DC converter / Inverter control 10
Q2 Step-down circuit 5V for DC/DC step-down
03 Switch (Sf: :chegge the free run frequency of DC/DC converter / Inverter control IC
Q4 Step-down circuit DC/DC step-down (for 33V)
Q6 Step-up circuit DC-DC step-up (for +1OV and +18V)
Q7,8 Inverter driver Drive inverter circuit
09,10 Switch SW to change the free run frequency of DC/DC converter / Inverter control IC
(for INVERTER)
Q11 ,12 -6V regulator control ~6V regulator for LCD (for QVGA MODEL)
Q13-16 +12V regulator control +12V regulator for VCOM amplifier
Q17 Inverting circuit DC/DC inversion (for -12V)
018-20 Switch -12V rising sequence delay
Q2122 Switch +18V rising sequence delay
Q2324 Switch -12V rising sequence deIay
Q2526 Switch +12V rising sequence delay
Q2728 Switch +18V rising sequence delay
Q200 Switch For Mstar RESET
Q201 Buffer Extract SYNC from video G signal.
Q401,402 Buffer For VCOM current amplification
Q403 Buffer For VCOM auto adjustment
0500 Touch panel X1 SW X1 SW: Be turned on when the touch panel is touched or when there is an
Input at X aXIs, and apply voltage
Q501 Touch panel X0 SW X0 SW: Be turned on when there is an input at X axis, and apply voltage
0502 Touch panel X1 SW ELI-iv: ::::::::2:;T:C;::$:mh panel Is touched or when there IS an
Q503 Touch panel Y0 SW Y0 SW: Be turned on when there is an input at Y axis, and apply voltage
0504 Touch panel Y1 SW Y1 SW: Be turned on when there is an input at Y axis, and apply voltage
0505 Touch panel Y0/Y1 SW 101/;1tfirrl; :eat:::::t: winsthere Is an Input at Y aXIs, and be turned off
Q600 For turning on LED R Constant current circuit controlled by LED R PWM
Q601 For turning on LED G Constant current circuit controlled by LED G PWM
0602 For turning on LED B Constant current circuit controlled by LED B PWM
0603 For turning on LED R Constant current circuit controlled by LED R PWM
O DAUGHTER UNIT (X89-3062-72)
Ref. No. Application / Function Operation / Condition / Compatibility
Q1 AMP GAINiAMP in FM band

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DDX6034/6034M/6054fl 034BT/7034BTMN 14
DNX7000EX/7140/724OBT/734OBT

MICROCOMPUTERS TERMINAL DESCRIPTION

10

Pin No. Pin Name l/O Application Est Processing/Operation/Description
57 V85
58 NC (VALL G) 0 Output is fixed to L (Illumination control of the Not used Out ut is fl ed to L
variable illumi G" when this terminal is used) ' p X
59 V002
6O RiMIRRORilNT 0 Mirror ON when the forced rear camera HI: Mirror ON when the forced rear camera,
Lo: Mirror OFF when the forced rear camera
61 RicAMilNT 0 Rear camera forced ON Hi: Forced rear camera change,
(RESERVE) Lo: Normal operation
62 LED70N O lllumi ON/OFF of DISK slot H: ON, L: OFF
63 ILLUMI l lllumi detection L: ON, H: OFF
64 TYPEBT/DSP O 8 functions DSP RESET control (D H: Reset release L Reset
RST/DSPiRST A ' I '
TYPEiBT/DSP, 6 functions: Terminal used to detect if the , ,
64 l _ _ (D H: ET is needed, L: RT 15 not needed
RST/TYPEiBT product destination needs BT or not.
65 NO (CE) I Used for re-writing Fixed to Hi when used for re-writing
66 TYPE1 I Destination setting (I) Refer to Destination setting:
67 INV,SW 0 Switching of Inverter free run frequency
68 |NV7ENA 0 Back light ON/OFF control H: ON, L: OFF
69 EJECT I Eject key input L: When pressing of Key detected.
70 SI 0 SI control L: Turned on, H: Turned off
Switching of tilt mechanism power supply
71 TILT,SPEED O H: 8V, L: 5V
voltage
72 TYPES I Terminal for K2 destination (D H: For K2 destination, L: To other destinatlons
T ' | f ' t d C k E' -
73 JlGiEJECT l 'ermlna or inspec IOI'I mo. e (_ an ma e Jec L: Normal mode, H: Inspection mode
tion even if the tilt mechanism is not connected)
74 VCCZ
TYPEiTV/ASEL/ 8 functions:
75 0 . . (D H: KAB, L: BT (Only for K TYPE)
ASEL AUdIO selector (sub) swrtching output
TYPETV/ASEL/ 6f t' :T ' | dt dt t'fth
75 l unc ions Ierrnina use 0 e BC I e (D H: TV is needed, L: TV is not needed
TYPEiTV product destination needs TV I/F or not.
76 V83
TYPEiDSP/ 8 functions: , _
77 I _ _ (D L: When pressrng of Key detected.
P'I'LSW/P'I'LSW Detect if PTI' SW is pressed or not.
TYPE DSP/P'I'I' 6f t' :T ' | dt dt t'fth ,
77 * * l m 'Ons .emIma use ° 9 BC ' e (D H: DSP is needed, L: DSP is not needed
SW/TYPEiDSP product destination needs DSP or not.
Detect if the disc exists or not in DVD mecha- _ , , _
78 DISCiDET l nism H: Disc does not eXIst, L: Disc eXIsts
79 BEiMREO 0 Request to backend
80 BEisTBY I Standby request from backend
81 BE,CON 0 Control request to backend
82 BEN] 0 Initial request to backend
P tl t d.Ot t'f' dt L:
83 BEiRESERVE1 0 Spare pin between B and E 95.. y no use _ p '5 <9 0
Logic is not yet defined:
84 WRT7E2P I Used for writing data in E2P L: Normal, H: During writing data
Terminal for operation identification from back- , _
85 BEiPLiJUDGE l H: Valid, L: Invalid
end
86 BEiRST 0 Reset request to backend L: Reset, H: Reset clear