Kenwood GX-204KE User manual

© 2006-6 CREATED IN JAPAN
B53-0427-00 (N)0
CD & HEATER CONTROL RECEIVER
GX204KEF2/KHF2
GX204LEF2/REF2
GX204SEF2
SERVICE MANUAL
GX204LEF2
FOLDER
AUTO
OFF
TONE BAL
SCAN DISP
A/S PAGE
RPT RDM
NEWS T.I
RDS VOL ADJ
REG LO/DX
CD
FM
AUXAM
MODE A/C
LOAD
TUNE/TRACK
PUSH ON/VOL
FRONT
GX204KEF2
CD
AUX
LOAD
MODE A/C
TONE BAL
TUNE/TRACK
FOLDER
AUTO
OFF
DISP PAGE
SCAN LOCAL
A/S
FM
AM
RPT RDM
PUSH ON/VOL
FRONT
TONE BALSCAN
A/S
RPT RDM
NEWS T.I
DISP
PAGE
RDS VOL ADJ REG LO/DX
GX204REF2
MODE A/C
AUTO
OFF
GX204KHF2
TONE BAL
SCAN
A/S
RPT RDM
LOCAL DISP PAGE
GX204SEF2
SUBARU GENUINE Model Model Name Parts No.
GX-204KE GX204KEF2 86201AG290
GX-204KH GX204KHF2 86201AG250
GX-204LE GX204LEF2 86201AG460
GX-204RE GX204REF2 86201AG350
GX-204SE GX204SEF2 86201AG550
DC cord for service E30-3801-15
ANT extension cord for service E30-6255-05
Panel assy
The knobs with numbers larger than 700 on exploded view are not
supplied for service parts because it is difficult to apply grease.
Please change to panel assy when you need repair to the knob.
The 6CD mechanism has not supplied repair parts for each part
(for Optical Laser pickup, motor etc).If you need repair to the 6CD
mechanism please change to mechanism assy (D40-2214-15).
(Y33-2570-23): GX204KEF2
(Y33-2570-24): GX204KHF2
(Y33-2572-73): GX204REF2
Panel assy (Y33-2570-12): GX204SEF2
(Y33-2572-74): GX204LEF2
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

2
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
BLOCK DIAGRAM
ANT
SUB
MAIN
ANT
AUX
EXT
UNIT
DIVERSITY
FRONT-END
FM/AM N/C LPF 7BAND EQ
E VOL
FM MPX
BAL
FAD
ATT
ATT
MIX LOGIC
MUTE RESET
RDS
MUTE
WOW
SRS-
4ch
POEWR
AMP
DET
BU
DET
ACC
CONT
ANT
DET
ILL-
DET
ILL+
MD
MECHA
ISO
ISO+LPF
MECHA
6CD
ISO
REAR SP
TEL
MUTE
BU
ACC
P ANT
ILL-
ILL+
LED
AVR
AVR
DC/DC
Q692
SATELLITE
SYSTEM
u-COM
IC121 A1
IC141
IC221
IC751 IC802
IC251
IC401
Q721
Q711
Q352
Q806
Q805
Q602
IC551
IC201
IC222
IC801
LED VFD KEY
u-COM
PANEL
HTR-C
u-COM
LED VFD
IC501
IC1
RESET
IC2
KEY ACC
DET
Q7
LED
AVR
Q31
DET
ILL-
Q5
DC/DC
(UP)
Q73
(DOWN)
DC/DC
Q51
IGN
AVR
Q41
ILL+
ILL-
IGN
ACC
UART
USED
(2-71) (2-72)
USED
(0-00) (0-21)
USED
(0-00)
FRONT SP
(2-71)
USED
(2-72)
-3.8dB -4.5dB
NAVI : -20.0dB
AUX : +2.6dB
EXT CH :+2.6dB
MD : +6.6dB
CD : +6.6dB
AM : +15.6dB
FM : -0.3dB
0.0dB
-30.0dB
-12.7dB
-20.0dB
270mVrms
FM
215mVrms
AM
FRONT
REAR
(VOL. MAX)
BEEP
MUTE
SRS-MUTE
P-MUTE
STANDBY
DIAGNOSTIC
BU DET
RESET
0.8Vrms
AUX 1.4Vrms(MAX)
0.0dB
0.8Vrms
EXT CH 1.3Vrms
NAVI 1.2Vrms
0.0dB
+26.0dB
+26.0dB
(X14-967)
(X34-401)
(X34-405)
(X00-410)
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3
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
COMPONENTS DESCRIPTION
●POWER SUPPLY UNIT (X00-4100-00)
Ref. No. Application / Function Operation / Condition / Compatibility
Q31 Power supply for illumination LED Stabilizes illumination LED voltage (8.1V) and supplies required current.
Q41 Power supply for IGN5V Stabilizes IGN5V voltage (5.1V) and supplies required current.
Q51 Step-down DC/DC switching Converts voltage by switching.
Q53 Power supply for VFD filament Stabilizes VFD filament voltage (2.9V) and supplies required current.
Q54 Power supply for VFD filament Configures Darlington with Q53.
Q55 Power supply SW for VFD filament ON/OFF filament power supply by µ-com FL_FIL_ON signal.(ON with µ-com L output)
Q61 Power supply for DC/DC converter Stabilizes DC/DC input voltage (9.5V) and supplies required current.
Q62 Power supply for DC/DC converter Configures Darlington with Q61.
Q71 Step-up DC/DC timing control Controls step-up DC/DC switching.
Q72 Step-up DC/DC switching Converts voltage by switching.
Q73 Step-up DC/DC output voltage switching Detects output voltage and controls switching timing.
●SYNTHESIZER UNIT (X14-967x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC121 FM diver IC FM diver
IC141 RDS demodulation IC Demodulates RDS
IC143 Amplifier for filters RDS noise amplifier
IC171 AM noise canceller IC AM noise canceller
IC201 Amplifier for isolation 6CD isolation
IC221 Audio control IC BASS/MID/TRE, MPX, mute, electric volume
IC251 Audio control IC WOW control
IC301 Amplifier for midpoint potential output Outputs midpoint potential (6.8V, 4V).
IC391 Servo 8V power supply Servo 8V power supply driver
IC401 Power amplifier IC Power amplifier with 4CH
IC521 I2C bus IC Sie-BUS communication
IC551 Isolation IC AUX isolation
IC651 D3.3V power supply Power supply driver for 6CD mechanism Bu3.3V.
IC671 D5V power supply Power supply driver for 6CD/MD mechanism DSP5V.
IC681 C3.3V power supply Power supply driver for 6CD mechanism DSP3.3V.
IC751 Mute logic IC For hardware mute.
IC801 System µ-com System control
IC802 Reset IC Detects system reset.
IC952 Level shift IC Level-shifting (3.3V →5V)
Q101 IF count detection Outputs Lo when IF count is detected.
Q102 AM power supply switch Outputs 8V when AM.
Q103 RDS data buffer Outputs RDS buffer
Q121 Diver switch Detects diver ON/OFF.
Q122 FM S meter switch Outputs S meter voltage when FM.
Q123 Diver IC power supply switch Outputs Hi when AM_OFF.
Q124 Diver IC power supply switch Outputs Lo when AM.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

4
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
Ref. No. Application / Function Operation / Condition / Compatibility
Q141 Noise amplifier Switches constant when noise is detected.
Q142 Noise amplifier Noise detection output buffer
Q143 Noise amplifier Switches constant when noise is detected.
Q221 Mute switch Mute within the electric volume.
Q222 Switch within the electric volume For switching FM/AM within the electric volume.
Q223,224 Mute switch SRS-WOW mute
Q301 Midpoint circuit discharge switch Discharges the midpoint voltage when ACC_OFF.
Q303 Midpoint circuit discharge switch Detects P-ON for discharging midpoint voltage when ACC_OFF.
Q304 Midpoint circuit discharge switch Discharges the midpoint voltage when ACC_OFF.
Q331 Servo 8V power supply switch Detects P-ON for servo 8V.
Q332 Servo 8V power supply switch Driver for servo 8V.
Q333 Servo 8V power supply switch Darlington for servo 8V.
Q351 Power supply switch for P-ANT Detects Acc for P-ANT.
Q352 Power supply switch for P-ANT Driver for P-ANT.
Q353 Power supply switch for P-ANT Darlington for P-ANT.
Q354 P-ANT short detection switch Detects P-ANT short.
Q371~373 DC offset detection switch Detects DC offset voltage.
Q391 Audio8V power supply switch Detects P-ON for Audio8V.
Q392 Audio8V power supply switch Driver for Audio8V.
Q521 Current buffer for SYS_ON Outputs Hi when SYS_ON is Lo.
Q522 Current buffer for SYS_OFF Outputs Hi when SYS_OFF is Lo.
Q523 Bus_OFF detection Inputs Hi when Sie-Bus system is OFF.
Q524 Bus_ON detection Inputs Hi when Sie-Bus system is ON.
Q525 Hardware reset switch Outputs Lo when hardware reset is detected.
Q526 Sie-Bus reset detection switch Outputs Hi when Sie-Bus reset is detected.
Q551 AUX detection switch Outputs Hi when AUX is detected.
Q601 Power supply switch for DC/DC45V Detects DC/DC switch.
Q602 Power supply switch for DC/DC45V Driver for DC/DC45V power supply.
Q603 Power supply switch for DC/DC45V Darlington for DC/DC45V power supply.
Q604~606 Switching for DC/DC45V power supply For DC/DC45V power supply.
Q621 Switch for filament power supply Detects DC/DC switch.
Q622 Switch for filament power supply Driver for filament power supply.
Q623 Switch for filament power supply Darlington for filament power supply.
Q624 Power supply switch for DC/DC45V Detects DC/DC switch.
Q625 Power supply switch for DC/DC45V Driver for DC/DC45V power supply.
Q626 Switch for filament power supply Driver for filament power supply.
Q651 Switch for Bu5V power supply Driver for Bu5V power supply.
Q652 Switch for Bu5V power supply Darlington for Bu5V power supply.
Q671 Switch for D5V power supply Detects P-ON for D5V power supply.
Q672 Switch for D5V power supply Outputs Lo when AM.
Q673 Switch for D5V power supply Supplies D5V power supply when AM.
COMPONENTS DESCRIPTION
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

5
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
Ref. No. Application / Function Operation / Condition / Compatibility
Q674 Switch for D5V power supply Outputs Lo when AM.
Q691 Switch for ILL power supply Detects ILL+ for ILL power supply.
Q692 Switch for ILL power supply Driver for ILL power supply.
Q693 Switch for ILL power supply Darlington for ILL power supply.
Q694 Switch for ILL power supply Driver for ILL power supply.
Q711 Acc detection switch Outputs Lo when Acc_ON.
Q721 Bu detection switch Outputs Lo when Bu_ON.
Q722 Over-voltage detection switch Detects Bu over-voltage.
Q801 P-ON5V power supply switch Driver for P-ON5V power supply.
Q802 Sie-BUS mute output Outputs Hi when mute ON.
Q803 Switch for ILL- level shift Converts ILL- (13.2V →5V).
Q804 ILL+ detection switch Detects ILL+.
Q805 Switch for ILL- level shift Converts ILL- (13.2V →5V).
Q806 ILL- detection switch Detects ILL-.
Q807 Switch for SRS-WOW mute Outputs Hi when mute ON.
Q808 Switch for level-shift Level-shifting (5V →3.3V)
Q809 Switch for 6CD mute Outputs Lo when mute is requested from 6CD mechanism.
Q810 Switch for level-shift Level-shifting (5V →3.3V)
●SWITCH UNIT (X34-401x-xx) (AUDIO)
Ref. No. Application / Function Operation / Condition / Compatibility
IC501 Audio panel µ-com Fluorescent indicator tube, Key matrix control
Q501 For cut-off bias setting PNP transistor When displaying with fluorescent indicator tube, filament (-) terminal is approximately 3.0V.
Q502 For fluorescent indicator tube Base voltage L: ON, H: OFF
power switch PNP transistor
●SWITCH UNIT (X34-405x-xx) (H/C)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 Heater control panel µ-com Vehicle ECU, communication with audio-side µ-com, key import,
display data transmission, illumination control
IC2 Reset IC When µ-com power supply voltage is 4.2V or less, reset the µ-com.
IC3 E2PROM Stores ROM correction data
Q1 UART+ Interface for UART communication (transmission) with vehicle.
Q2 UART- Interface for UART communication (reception) with vehicle.
Q3 Power switch ON/OFFVH voltage application ofVFD.
Q4 Power switch ON/OFF Q3 by taking IGN_DET and DD_ON logic.
Q5 ILL- signal detection Transmit ILL- signal from vehicle to µ-com and Q13.
Q7 ACC voltage detection Detects ACC voltage from the vehicle.
Q11 Illumination LED control switch Controls ON/OFF and the luminance of LED for front DEF.
Q12 Illumination LED control switch Controls ON/OFF and the luminance of LED for rear DEF.
Q13 Illumination LED control switch Controls ON/OFF and the luminance of LED for key illumination.
COMPONENTS DESCRIPTION
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

6
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
MICROCOMPUTER’STERMINAL DESCRIPTION
●SYSTEM MICROCOMPUTER: 703037HYGM04A (X14: IC801)
Pin No. Pin Name I/O Application
Truth Value
Processing Operation Description
Table
1 SP_DATA_S O System µ-com →Panel µ-com data output UART 19200bps
2TUN_SDA I/O F/E I2C data input/output terminal
3NCONot used Output L fixed
4TUN_SCL I/O F/E I2C clock output terminal
5NCONot used Output L fixed
6SH_DATA_H I HTR-C µ-com →System µ-com data output UART 4800bps
7SH_DATA_S O System µ-com →HTR-C µ-com data output UART 4800bps
8 CDX_MTS O 6CD communication request output L: Communication request to 6CD, H: Other
9EVDD 5V potential
10 EVSS GND potential
11 BEEP O BEEP output 3kHz BEEP output (pulse), L: Not active
12 AM_BYPS O D5V bypass power ON in AM H: AM, L: Other
13 TEL_MUTE I TEL_MUTE request input (E type only) L:TEL_MUTE request
13 NC O Not used (In other than E type) Output L fixed
14 ILL_DET+ I ILL+ detection ILL ON: L
15 ILL_DET- I ILL- detection (pulse input) H: ON, L: OFF, pulse input
Adjusts luminance with duty ratio.
16 VOL_SDA I/O E_VOL I2C data input/output
17 VOL_SCL I/O E_VOL I2C clock output
18~20 NC O Not used Output L fixed
21 IC/VPP (FLASH writing) (FLASH writing)
22~25 NC O Not used Output L fixed
26 BUS_DI I Sie-BUS data IN BUS data input
27 BUS_DO O Sie-BUS data OUT BUS data output
28 CDX_RST O 6CD reset L: Reset, H: Other
29 PON_5V O AVR control (Audio, MECHA) L: Power ON, H: OFF (stable time 400m)
30 ON_REQ I Sie-BUS ON request L: System ON request
31 SYS_ON O Sie-BUS ON output L: System ON
32 SYS_OFF O Sie-BUS OFF output L: System OFF
33 BUS_STBY O BUS_IC standby control H: System ON
34 RESET System reset input L: Reset, Reset voltage: 4.2V
35,36 XT1, XT2 Sub system clock oscillator terminal Not used
37 REGC
38,39 X2, X1 Main system clock oscillator terminal 12.582MHz
40 VSS - GND potential
41 VDD - 5V potential
42 CLKOUT Not used
43 HARD_RESET O Hardware reset output H: Reset, L: Other
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

7
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
Pin No. Pin Name I/O Application
Truth Value
Processing Operation Description
Table
44 P_STBY O P-AMP standby control L: STAND-BY, H: Other
45 P_MUTE O P-AMP mute control L: MUTE, H: Other
46 P_SVR O For P-AMP discharge L: Normally, H: Discharging
47 SRS_MODE1 O SRS-WOW mode selection 1 eSRS_FOCUS ON: H
48 SRS_MODE2 O SRS-WOW mode selection 2 eSRS_TruBass ON: H
49 SRS_MODE3 O SRS-WOW mode selection 3 eSRS_3D-Stereo ON: H
50 DC/DC_PRO I Filament power supply output short detection
H: Normally, With L 100ms x 10_1s, set DC/
DC_CON to OFF and write the log into EEPROM.
51 ANT_CON O ANT AMP power supply control H: ACC ON, L: Other
52 TUN_DIVER O FM diversity antenna control (M type only)
H (OFF): In test mode or L (ON): Switch (initial: H)
L (ON): In normal mode
52 NC O Not used (In other than M type) Output H (OFF) fixed (After TUNER start up)
53 PON_AM O AM power supply control H: AM, L: Other
54 TUN_IFC I F/E IFC OUT input terminal H:Station found, L:Station not found
55 DC/DC_CON O DC/DC power supply control DC/DC ON: H
56 VOL_MUTE O E_VOL MUTE output MUTE ON with High (IC terminal=Low)
57 SRS_MUTE O MUTE output for SRS SRS_MUTE ON: L
58 BVDD 5V potential
59 BVSS GND potential
60 IGN_DET_CON O IGN detection operation check H: IGN detected, L: Other
61,62 NC O Not used Not used
63~65 TYPE1~TYPE3 I Destination setting terminal 1~3 qRefer to the truth value table
66 AUX_DET I AUX detection H: AUX detected
(Can be detected after PON stabilized)
67 TUN_AFS O Constant switching when noise detected L: In AF search, H: Other
(E type only)
67 NC O Not used (In other than E type) Output H (other) fixed (while TUNER on)
68 CDX_MUTE I 6CD mute request H: Mute request from 6CD, L: Other
69 CDX_DDCNT I 6CD servo power supply ON request H: ON request from 6CD, L:Other
70 CDX_STM I 6CD communication request input L:Communication request to 6CD, H: Other
71 CDX_ACC O 6CD ACC H: 6CD on, L: Other
72,73 TYPE4, TYPE5 I Vehicle yearly revision setting terminal 1, 2 qL: A06 audio
74 AVDD 5V potential
75 AVSS GND potential
76 AVREF A/D port reference voltage input
77 RDS_QUAL I RDS quality (E type only) RDS quality
77 NC I Not used (In other than E type) Input Hi-Z
78 RDS_DATA I RDS data (E type only) RDS data input
78 NC I Not used (In other than E type) Input Hi-Z
MICROCOMPUTER’STERMINAL DESCRIPTION
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

8
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
Pin No. Pin Name I/O Application
Truth Value
Processing Operation Description
Table
79 REMOCON I Vehicle satellite switch input rResistance dividing vehicle remote control
80 NC I Not used Not used
81 DIAG I Terminal for test mode L:Test mode, H:Normal
82 P_DCERR_DET I DC offset detection At 1.6V or higher and 100ms x 20=2s Offset detection
83 NC I Not used Not used
84 IGN_DET I IGN detection H: IGN ON, L: IGN OFF
85 RDS_NOISE I FM noise detection (E type only)
85 NC I Not used (In other than E type) Input Hi-Z
86 TUN_SMETER I S meter voltage input
87,88 NC I Not used Not used
89 SP_REQ_S O System µ-com →Panel µ-com request H: ON, L: OFF
90 SP_REQ_P I Panel µ-com →System µ-com request H: ON request
91 ACC_DET I ACC detection L: ACC ON, H: ACC OFF, Detected voltage: 8.5V
92 OFF_REQ I Sie-BUS OFF request L: System OFF request
93 BU_DET I BU detection
L: BU ON, H: BU OFF (at momentary power down),
Detected voltage: 8.5V
94 SP_RST O Reset to panel µ-com H:Normal, L: Reset, Immediately after reset,
when communication reset occurs, RESET.
95 SP_BKUP O Voltage down detection output to panel µ-com L:Voltage down, H: Normal
96 RDS_CLK I RDS clock (E type only) RDS clock
96 NC O Not used (In other than E type) Output L fixed
97 CDX_DSTM I 6CD data input Communication speed 250kHz
97 FLASH_SI I Flash writing data input
98 CDX_DMTS O 6CD data output Communication speed 250kHz
98 FLASH_SO O Flash writing data output
99 CDX_SCK I 6CD clock input Communication speed 250kHz
99 FLASH_CLK I Flash writing clock input
100 SP_DATA_P I Panel µ-com →System µ-com data output UART 19200bps
TruthValueTable
qPoint of destination setting terminal
TYPE1 (63pin) TYPE2 (64pin) TYPE3 (65pin) TYPE4 (72pin) TYPE5 (73pin) Destination
LLLLLGX204JE,JH
LLHLLGX204KE,KH
LHLLLGX204RE
LHHLL -
HLLLL -
HLHLLGX204SE
HHLLLGX204LE
HHHL L -
MICROCOMPUTER’STERMINAL DESCRIPTION
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Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

9
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
●PANEL (AUDIO) MICROCOMPUTER: MB90562A-419E (X34-401: IC501)
Pin No. Pin Name I/O Application Processing Operation Description
1NCONot used Output L fixed
2~5 KR3~KR6 I Key scan pulse input terminal
6~9 KS1~KS4 O Key scan pulse output terminal
10,11 NC O Not used Output L fixed
12 AVCC Power supply input for A/D converter VCC
13 AVR REF voltage input for A/D converter SW_5V potential
14 AVSS GND connection for A/D converter GND potential
15 SP_DATA_S I Data from system µ-com →panel µ-com output Communication speed 19200bps, 50ms interval
16 SP_DATA_P O Data from panel µ-com →system µ-com output Communication speed 19200bps, 20ms interval
17 SP_REQ_P O Request from panel µ-com →system µ-com
18 SP_BKUP I Inputs voltage reduction from system µ-com detection L: Momentary power down detected, H:Normal
19 MD0 I For FLASH ROM writing Hi: Normal mode, Lo: FLASH writing mode
20 SP_RST I Reset input from system µ-com Reset request from system µ-com Lo
21 MD1 I For FLASH ROM writing Hi: Normal and FLASH writing mode, Lo: Not set-up
eSRS mode switching
SRS_MODE1 SRS_MODE2 SRS_MODE3 Mode
47pin 48pin 49pin
LLLOFF
LLH3D-Stereo
LHLTruBass
HLLFOCUS
HHHWOW
rREMOCON voltage table
0V 5V
1.18 1.40 1.65 1.95 2.21 2.56 2.71 3.11 3.26 3.70 3.78 4.25 4.46 4.95
No
operation
MUTE
operation VOL+
operation VOL-
operation MODE
operation SEEK operation SEEK
operation
MICROCOMPUTER’STERMINAL DESCRIPTION
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

10
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
Pin No. Pin Name I/O Application Processing Operation Description
22 MD2 I For FLASH ROM writing Hi: FLASH writing mode, Lo: Normal mode
23 X0 µ-com clock oscillator 4.0MHz (ceramic oscillator)
24 X1 µ-com clock oscillator 4.0MHz (ceramic oscillator)
25 VSS1 Power supply GND GND potential
26 P00 I FLASH writing method setting
27 P01 I FLASH writing method setting
28 NC O Not used Output L fixed
29 SW_5V O SW series 5V power supply Lo: ON, Hi: OFF
30 POWER I POWER Lo: ON, Hi: OFF
31 ENC_DW I Rotary encoder SW (B phase wave form) Port monitoring of pulse with 1ms cycle timer
32 ENC_UP I Rotary encoder SW (A phase wave form) Port monitoring of pulse with 1ms cycle timer
33 NC O Not used Output L fixed
34 SP_REQ_S I Request from system µ-com →panel µ-com Hi: ON, Lo: OFF
35~38 NC O Not used Output L fixed
39 KR7 I Key scan pulse input terminal
40,41 KR2, KR1 I Key scan pulse input terminal
42 NC O Not used Output L fixed
43 FL_BLK O FL data blanking output terminal Adjusts luminance with duty ratio.
(FL tube luminance adjustment) Hi: OFF, Lo: ON
44~47 NC O Not used Output L fixed
48 SDA I/O Serial data for E2PROM Input/output to E2PROM
49 SCL O Serial clock for E2PROM Output to E2PROM
50 VSS2 Power supply GND GND potential
51 NC O Not used Output L fixed
52 TYPE1 I Destination setting H: Left-hand steering, L: Right-hand steering
53 NC O Not used Output L fixed
54 BRIGHT I Change logic when brightness changes Operation:When “H”, bright data is finalized at UART
55 HTR I For determining bright terminal valid/invalid Operation:When “H”, bright terminal is valid
56 NC O Not used Output L fixed
57 VCC Power supply input Bu5V potential
58 C - Voltage stabilizing process terminal 0.1µF condenser connection
59 NC O Not used Output L fixed
60 FL_SO O FL data output terminal
61 FL_CLK O FL clock output terminal
62 FL_LAT O FL data latch control terminal
63,64 NC O Not used Output L fixed
MICROCOMPUTER’STERMINAL DESCRIPTION
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

11
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
●PANEL (HEATER CONTROL) MICROCOMPUTER: MB89537A1010E (X34-405: IC1)
Pin No. Pin Name I/O Application Processing Operation Description
1SH_DATA_H O HTR-C µ-com →System µ-com data output Communication speed: 4800bps
2SH_DATA_S I System µ-com →HTR-C µ-com data output Communication speed: 4800bps
3MOD2 I Memory access mode setting input terminal Always L input
for when FLASH
4TYPE1 I Destination setting 4V or higher: Left-hand steering,
2V or lower: Right-hand steering
5TYPE2 I Destination setting 4V or higher: SINGLE, 2V or lower: DUAL
6 TYPE3 I Destination setting 4V or higher: 15~29°C, 2V or lower: 18~32°C
7~11 NC O Not used Output L fixed
12 AVCC - A/D converter power supply terminal
13 AVR - A/D converter standard voltage input terminal
14 AVSS - A/D converter power supply terminal
15 NC I Not used Input fixed
16 ACC_DET I ACC detection L: ACC ON, H: ACC OFF, Detected voltage:8.9V
17~19 NC I Not used Input fixed
20 RST - Reset input terminal L: Reset
21 MD0 - Input terminal for memory access mode setting H:When writing FLASH µ-com, L: Other
22 MD1 - Input terminal for memory access mode setting H:When writing FLASH µ-com, L: Other
23 X0 - Oscillator connection terminal 12.288MHz
24 X1 - Oscillator connection terminal 12.288MHz
25 VSS - Power supply terminal
26,27 NC O Not used Output L fixed
Start operating when the heater control µ-com IGN
28 HTR O Terminal for determining bright terminal valid/invalid ON, and at the point when the air-conditioner data is
finalized at UART, ON. H: ON, L:OFF
29 BRIGHT O Output terminal for bright information from vehicle At the point when the bright data is finalized at
UART, ON. H: ON, L: OFF
30 FLASH_MOD I Input terminal for FLASH writing setting Always L input
31 R-DEF O Rear DEF indicator control terminal LED luminance control by PWM control,
2 steps brightness, 4ms cycle PWM
31 P22 I Input terminal for FLASH writing setting H: When writing FLASH µ-com
32 F-DEF O Front DEF indicator control terminal LED luminance control by PWM control,
2 steps brightness, 4ms cycle PWM
33 KEY_DET O Panel key operation check When key or encoder is input, “H” is output at 100ms
(in test mode only)
34 ENC_L3 I Rotary encoder (left) pulse count input terminal
35 ENC_L2 I Rotary encoder (left) pulse count input terminal
36 ENC_L1 I Rotary encoder (left) pulse count input terminal
37 ENC_R3 I Rotary encoder (right) pulse count input terminal
MICROCOMPUTER’STERMINAL DESCRIPTION
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

12
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
Pin No. Pin Name I/O Application Processing Operation Description
38 ENC_R2 I Rotary encoder (right) pulse count input terminal
39 ENC_R1 I Rotary encoder (right) pulse count input terminal
40,41 KR3, KR2 I Key scan pulse input terminal
41 P10 I Input terminal for FLASH writing setting H:When writing FLASH µ-com
42,43 KR1, KR0 I Key scan pulse input terminal
44~46 KS2~KS0 I/O Key scan pulse output terminal
47 NC O Not used Output L fixed
48 SCL I/O Outputs clock to E2PROM
49 SDA I/O Outputs serial data to E2PROM
50 FLASH: [C] -In FLASH products, connect 0.1µF, and
MASK: [NC] in MASK products, NC (no connection)
51,52 NC O Not used Output L fixed
53 HTR_ECU_TX O HTR-C µ-com →HTR-C ECU 4800bps
54 HTR_ECU_RX I HTR-C ECU →HTR-C µ-com 4800bps
55 FL_BLK O FL display tube blank control terminal FL display tube luminance control by PWM control
H: Blank (display OFF)
56 ILL_DET- I ILL- detection (pulse input)
57 VCC - Power supply terminal
58 ILL_DET+ I ILL+ detection ILL ON: H
59 FL_FIL_ON I/O FL tube filament power supply control SW Hi-Z: OFF, L: ON.Timing is the same as DC_DC_ON
60 FL_LAT O FL data latch control terminal Execute output OFF count while not displayed.
61 FL_CLK O FL clock output terminal Sync clock output while VFD serial communication
61 FLASH_CLK O Clock output to ROM writer Clock transmission to ROM writer
(For FLASH µ-com only) (communication speed is dependent on ROM writer)
62 FL_SO O FL data output terminal Display data transmission toVFD
62 FLASH_SO O Data output to ROM writer Data transmission to ROM writer
(For FLASH µ-com only) (communication speed is dependent on ROM writer)
63 FLASH_SI I Data input from ROM writer Data reception from ROM writer
(For FLASH µ-com only) (communication speed is dependent on ROM writer)
63 NC O For mask µ-com, Not used Output L fixed
64 DC_DC_ON I/O FL tube power supply control terminal Hi-Z: ON, L: OFF
MICROCOMPUTER’STERMINAL DESCRIPTION
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

13
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
EDCBA
1
2
3
4
5
6
7
111122022 3
D31
D30
D4 D5
D6 D7
D8
D9
D10
D11
D12
D13
D16
D24
D25
D17
D20
D21
D22
D23
D26
D27D18
D28
D19
D29
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S18
S19
S20
S21
S22
S23
ED1
S17 S24
SWITCH UNIT
X34-405x-xx (J74-1712-12)
C16
R112
R89
R18
R108
R102
R104
R105
R106
R107
R1
R2
R19
R22
C1
C6
C11
R100
R23
R29
R99
R20
R49
R69
R79
R82
R84
R86
C15
C4
C8
C9
C12
R3
R13
R21
R27
R44
R62
R64
R65
R97 C3
R4 R96
R6
R7
R8
R9
R11
R12
R14
R15
R17
R25
R37
CP4 CP1
CP2
CP3
R54
R59
R60
R68
R70
R71
R72
R76
R78
R87
R88
R98
R90
R91
R92
R93
R5
R101
X1
R103
R111
R110
R109
C13
R10
R16
R24
C17
R50
R51
R114
R115
R113
TP13
TP27
TP31
TP8
TP24
TP30
TP10
TP37
TP23
TP82
TP2
TP6
TP9
TP11
TP12 TP14
TP16
TP15
TP17
TP19
TP21
TP22
TP25 TP26
TP28
TP29
TP44 TP57
TP58
TP59
TP60
TP61
TP62
TP43
TP38
TP32
TP33 TP34
TP35
TP36
TP1
TP5
TP7
TP18 TP20
TP39
TP40
TP41
TP42
TP45
TP46 TP47
TP48 TP49
TP50 TP51
TP52 TP53
TP54 TP55
TP56
TP83
TP84
TP85
TP86
16
12
34
115
216
58 41
164
19
33 5152
20 32
BE
B
E
BE
BE
BE
BE
BE
B
E
BE
CN4
Q4
Q11
Q12
CN2
Q3
Q1
Q13
Q2
Q5
Q7
IC1
IC2
IC3
SWITCH UNIT
X34-405x-xx (J74-1712-12)
X34-405x-xx
Ref. No. Address
IC1 3D
IC2 4C
IC3 5D
Q1 4D
Q2 5D
Q3 5D
Q4 5D
Q5 5D
Q7 4D
Q11 6D
Q12 3C
Q13 5C
Refer to the schematic diagram for the values of resistors and capacitors.
PC BOARD
(COMPONENT SIDEVIEW) (FOIL SIDEVIEW)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

14
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
FGHIJ
1
2
3
4
5
6
7
SYNTHESIZER UNIT
X14-967x-xx (J74-1710-12)
C802
R521
R522
R653
R801
R803
R805
R815
R852
R821
R141
R530
R107
C244
R230
C180
C182
R179
R131
R351
C228
R101
R106
R111
R121
R231
R814
R901
R903
R907
R911
R912
R913
R914
C256
C257
C269
C272
C273
C274
C391
C412
C418
C711
C751
C809
CP371
R356
R375
R529
R714
R715
R811
R867
R904
R909
R910
R971 R972
R849
R319
C121
C122
C127
C129
C148 C153
C175
C176
C178
C184
C188
L107
R153
R154
C105
C106
C125
C147
C149
C151
C158C159
C181
C187
R219
C207
C221
R220
C230
C246
C252
C258
C261
C306
R818
R864
R870
C971 C972
R394
R102
R105 R122
124
R123
R126
R127
R143
R144
R147
R155
R178
R204
R203
C208
R209
R205
R210
R206
R223
R224
R225 R227
R228
R229
R261
R263
R264
R265
R268
R270
R272
R295
R301 R303
R305
R312
R352
R353
R354
R371
R373
R374
R392
R393
R410
R411
R524
R525
R526
R527
R528
R217
R218
R681
R711
R712
R752
R816
R824
R825
R827
R831
R833
R834
R835
R836
R846
R848
R851
R868
R883
R884
R885
R886
R887
R888
R889
R890
R891
R892
R893
R894
R895
R899
R900
R902
R655
R978
R979
R157
C813
GRYBLK
C653
C702
C305
L105
W103
L701
1
125
224
1
1
44
1
100 1
1
1
1
2
13
14
1
1
19
20
16
1
1
1
1
1
O
C652
C811
C144
C248
C203
C109
C183
C141
C332
C556
C392
C204
C222
C201
C268
C270
C276
C301
C302
C351
C413
C655
C682
C808
C112
C107
C108
C123
C142
C186
C202
C212
C223
C211
C502
C224
C225
C226
C278
C231
C254
C255
C291
C292
C293
C295
C371
C372
C501
C505
C506
C508
C294
C277
C229
L121
L171
SCL SDA
X141
X801
C
B
C
EE
89
16
ECB
BEC
4
8
5
4
58
48
3724
13 12
25 36 4
58
IG
4
8
5
43
2
85
41
8
51 4
45
8
9
8
11
33
23
34
22 12
8
916
4
58
81
80
50 31 3051
24
CC
EEB
EB
BE
EB
BE
BE
BE
BE
BE BE
G
D
S
BE
BEBE
BE
BE
BE
BE
BEBE
BE
BE
BE
BE
BE
EB
IGO
CN3
Q521
Q522 Q526
Q802
Q807
D622
Q123
Q351
Q102
Q142
Q391
D50
1
Q809
D503
D521
D302
Q222
Q223
Q224
Q373
Q523
Q524
Q525
Q711
Q124
Q141
D121
D221
D712 D751
D752
Q353
Q354
Q371
Q372
Q122
D70
A1
J2
J1
Q392
D301 D331
D371
D141
D351
D711
D802
P1
Q352
IC521
IC751
IC801
IC141
IC802
IC221
IC301
IC171
IC143
IC551
IC201
IC222
IC251
IC681
IC651
IC121
IC671
IC391
IC401
PC BOARD (COMPONENT SIDE VIEW)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

15
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
ONMLK
1
2
3
4
5
6
7
F331
F601
R674
F501
C331
C521
C522
R673
C621
C721
R672
R694
R723
R633
R333
R523
R524
R525
R601
R602
R603
R624
R681
R693
R721
R722
R671
R631
R630
L602
L671
W591
1
1
1
220
119
1
1
2
1
28
7
R332
2
R331
C672
C602
C603
C609
C622
C673
R626
R627
C552
C501
C505
R623
R621
R622
L601
R632
C555
C551
SDA
5
4
7
814
CC
BEE
CC
BEE
18
BE
BE
BE BE
BE
BE
BE
BE
BE
BE
CN3
D623
CN4
Q333
Q331
Q621
Q672 Q674
Q671
D501
Q673
D503
D504
Q694
Q721
Q722
Q623
D722
D805
CN1
J2 J3
D721
D
331
D601
D621
D624
D602
D605
Q602
IC952
IC681
IC671
X14-967x-xx
Ref. No. Address
IC121 3H
IC141 6G
IC143 5G
IC171 6G
IC201 7H
IC221 6H
IC222 5H
IC251 4H
IC301 4H
IC391 2F
IC401 2G
IC521 4J
IC551 5I
IC651 4I
IC671 4K
IC681 5J
IC751 4I
IC801 6I
IC802 5J
IC952 6K
Q102 3G
Q122 3G
Q123 3G
Q124 4H
Q141 5G
Q142 5G
Q222 5H
Q223 6G
Q224 6H
Q331 4K
Ref. No. Address
Q333 3K
Q351 3J
Q352 3J
Q353 3J
Q354 3J
Q371 3H
Q372 3H
Q373 3H
Q391 2G
Q392 2G
Q521 5J
Q522 5J
Q523 5J
Q524 5J
Q525 4J
Q526 4J
Q602 3L
Q621 5L
Q623 5K
Q671 4K
Q672 4K
Q673 4K
Q674 4K
Q694 7K
Q711 4I
Q721 4K
Q722 4K
Q802 5H
Q807 5I
Q809 6I
Refer to the schematic diagram for the values of resistors and capacitors.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

16
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
PQRST
1
2
3
4
5
6
7
R817
C806
R751
R812
R813
R822
R975
R878
R879
R880
R906
C559
R877
R311
R2
3
C701
C977
R651
R652
R691
R313
R314
R973
R974
C210
C209
R713
R2
3
R2
3
R2
4
R716
C247
C267
C401
C402
C403
C404
C405C406
C407
C408
C409
C245
C410
C414
C558
C591
C601
C606
C623
C651
R27
8
C691
C804
C416 C420
C298
R234
R233
R302
R355 R372
R607
R610
R615
C421
R802
R804
R806
R808
R810
R977
R832
R841
R842
R845
R856
R862
R872
R876
R905
R908
R916
R291
C805
C807
C206
C205
C23
3
C251
C260
C262
C264
C266
C271
C304
R617
R917
R211
C507
R212
R654
C604
C607
C801
C812
C557
R556
R616
R555
R202
R201
R207
R208
R221
R222
R22
6
R236
R235
R255
R259
R258 R257
R260
R276
R266
R267
R269 R271
R273
R274
R275
R277
R292
R293
R294
R304
R308
R309
R310
R315
R316
R317
R318
R401
R405
R409
R412
R501
R502
R503
R504
R505 R506
R507
R508
R509
R551
R552
R553
R554
R215
R216
R976
R915
R591
R604
R606
R608
R609
R611
R612
R613 R614
R628
R629
R692
R823
R826
R828 R829
R830
R837
R838
R839
R840
R843
R844
R847
R850
R853
R854
R855
R857
R858
R859
R860
R861
R863
R865
R866
R869
R871
R873
R874
R881
R882
R896
R897
R898
C299
R820
R819
R334
BE
BE
CC
EBE
BE
BE
BE
BE BE BE
BE
BE
BE
BE
BE
BE
EB
BE EB
EB
BE
BE
BEBE
EB
BE BE
BE
Q651
Q551
Q652
Q801
Q803
D332
Q332
Q691
Q303
D551
Q808
Q625
D303
D401
D603
D671
D691
Q221
Q301
Q304
Q604
Q624
Q804
Q805
D552
D651
D801
Q601
Q603
Q606
Q622
Q692
Q693
Q806
D604
Q626
Q605
D804
Q810
D606
TP5
TP17
TP37
TP32
TP71
TP502
TP701
TP47
TP801
TP3
TP4
TP15
TP31
TP36
TP45
TP72
TP84
TP503 TP505
TP603
TP702
TP21
TP22
TP23
TP301
TP806
TP553
TP1
TP2
TP6
TP7 TP8
TP9 TP10
TP11 TP12
TP13 TP14
TP16
TP18
TP19 TP20
TP33
TP34
TP35
TP38
TP39
TP40
TP41
TP42
TP43
TP44
TP46
TP48
TP49
TP50
TP51
TP52
TP73
TP74
TP75
TP76
TP77
TP78 TP79
TP80 TP81
TP82 TP83
TP85
TP86 TP87
TP88
TP351 TP371
TP372
TP401
TP402
TP403
TP404 TP405
TP407
TP408
TP409
TP412
TP413
TP416
TP417
TP418
T
P
TP420
TP421
TP501
TP504
TP506
TP507
TP508
TP509
TP510
TP511
TP512
TP513
TP514
TP591
TP601
TP602
TP604
TP802
TP803
TP554 TP555
TP556
TP557
TP24
TP422
TP551
TP552
TP352
SYNTHESIZER UNIT
X14-967x-xx (J74-1710-12)
PC BOARD (FOIL SIDEVIEW)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

17
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
YXWVU
1
2
3
4
5
6
7
R34
C41
R41
R42
R61
R62
R27
R51
R63
R26
R25
R56
C22
C24
C26
C28
C33
R64
R57
C72
R101
R81
R102
R74
R82
C21
C23 C25
C27
C71 C73
R21
R22
R23
R24
R33
R52
R53
R70
R71
R72
R73
R75
R76
R77
8
7
2
1
C42
C44
C53
C61 C62
C64
R79
R80
L41
L51
L61
BE
BAE
KC
1
15
216
BE
EB
BE
BE
BE
BE
EB
B
BE
E
D41
CN1
Q54
D43
Q55
D62 D51
Q71 Q72
D74
Q62
Q73
Q41
Q31
D52
D42
D21
D72
D24
D31
Q51
D22 D23
D32
D61
D71
D73
Q53
Q61
J1
POWER SUPPLY UNIT X00-4100-00 (J74-1713-02)
R103
R150
R237
R391
C116
C117
C210
C209
R238
R239
R240
C156
247
C157
C245 C414
R278
C298
C297
R234
R233
C102
C110
C111
C179
C126
C128
C155
C172
C173
C177
C124
C185
R104
R124
R125
R142R146
R148
R173
R174
R175
R176 R177
C114
C143
C146
C150
C152
C154
C171
C233
C266
C271
R211
R212
R108 R109
R110
R145
R149
R151
R152
R156
R171
R172
R221
R226
R236
R235
R276
1
R273
R277
R294 R318
R402
R403
R404
R405
R406
R407
R408 R409
R216
R112
C299
C296
BE
BE
BE
BE
BE
Q103
Q221
D101
D102
Q101
Q121
Q143
TP108
TP391
TP114
TP415
TP113
01
TP120
TP121
TP101
TP102
TP103
TP104
TP105
TP106
TP107
TP109
TP110
TP111
TP112
TP115
TP116
TP117
TP118
TP141
TP406
TP410
TP411
TP414
TP419
X14-967x-xx
Ref. No. Address
Q101 4U
Q103 4U
Q121 3U
Q143 5U
Q221 5U
Q301 4S
Q303 4T
Q304 4T
Q332 4R
Q551 6T
Q601 3Q
Q603 3Q
Q604 3Q
Q605 3Q
Q606 4Q
Q622 5Q
Q624 5Q
Q625 5P
Q626 6Q
Q651 4S
Q652 4S
Q691 6Q
Q692 6Q
Q693 6Q
Q801 5S
Q803 6R
Q804 6R
Q805 5R
Q806 2T
Q808 6R
Q810 6R
X00-4100-00
Ref. No. Address
Q31 3X
Q41 3X
Q51 4X
Q53 3Y
Q54 3Y
Q55 3Y
Q61 4X
Q62 4X
Q71 4X
Q72 4X
Q73 4Y
Refer to the schematic diagram for the values of resistors and capacitors.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

18
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
ZAA AB AC AD
1
2
3
4
5
6
7
D502
D503
D504
D505
D506
D507
D508
D509
D510
D511
D512
D513
D514
D515
D516
D517
D524
D525
D526
D527
D528
D529
D530D531
D532
D533
D534
D53
ED1
S538 S531
S532
S537
S503
S504
S509
S510
S511
S512
S517
S518 S519
S520
S521
S522 S523
S524
S525
S526
S527
S528
S529
S530
S533 S534
S535 S536
S539
S540
S541
S542
S543
S544
S545
S546
S547
S548
S549
S55
S516
S501
S514
S513
S515
S551
S554 S552
S502
S553
13111222 20
SWITCH UNIT X34-401x-xx (J74-1711-12)
Refer to the schematic diagram for the
values of resistors and capacitors.
PC BOARD (COMPONENT SIDE VIEW)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

19
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
AIAHAGAFAE
1
2
3
4
5
6
7
C502 C510
C506
C509
C505
C508
R570
R518 C501
R539
R540
R510
R512
R503
R565
R505
R508
R502
R507
R504
R554 R558
1 4
8
5
R556
W502 C507
R555
R557
R585
R586
R573
CP3
CP6
CP10
CP9 CP8
R516
R515
R591
R526
R528
R590
R538
R592
R561
CP1
CP7
CP4
CP5
CP2
R571
R501
R506 R509
R511
R513
R514
R529
R563
R564
R567
R531
X501
R583
C521
C511
R553
R588
C513
R601
R572
R562
R58
TP511
TP596
TP597
TP583
TP592
TP531
TP557
TP533
TP552
TP578
TP585
TP600
TP571
TP589
TP586
TP598
TP553
TP554
TP555
TP556
TP573
TP572
TP1
TP580
TP601
TP599
TP590
TP581
TP593
TP594
TP584
TP574
TP568
TP569
TP577
TP579
TP570
TP588
TP591
TP582
TP587
TP595 TP546
TP543
TP544
TP542
TP541
TP539
TP540
TP603
TP604
TP502
TP503
TP504
TP505
TP507
TP508
TP509
TP510
TP512
TP513 TP514
TP515 TP516
TP517 TP518
TP519 TP520
TP522
TP523
TP524
TP525
TP526
TP527
TP528
TP529
TP530
TP532
TP534
TP535
TP536
TP537
TP538
TP701
TP702
TP605
16
2019
32
64
52
1
33 51
EB
1
2
19
20
BE
TP547
Q501
CN503
P501
P502
D501
Q502
CN501
D536
IC501
IC502
SWITCH UNIT X34-401x-xx (J74-1711-12)
X34-401x-xx
Ref. No. Address
IC501 3AG
IC502 4AF
Q501 4AG
Q502 4AG
Refer to the schematic diagram for the
values of resistors and capacitors.
PC BOARD (FOIL SIDE VIEW)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

20
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
ABCDE
1
2
3
4
5
6
7
CN1 P1
Q671
Q694
D691
Q693
Q691
Q692
∗
CN3
*D332
Q651
Q672
Q621
D671
Q674
DSP3.3V
DSP5V
Q673
D621 Q624
Q625
D606
D623D622
D601
Q622
Q623
D624
Q604
Q626
D603
Q601
Q603
Q602
D602
Q605
D651
D605
D604
Q606
BU5V
D802
Q652
D551
J3
D521
SIE-
Q525
AUX
Q526
BU3.3V
D504
D501 D503
Q721
D701
BU
D721
D722Q
7
Q806
D552
AUX IN
J2
D401
SLE BUS
J1
Q391
Q392
SERVO 8V
BUS
DC/DC
45V
DC/DC
45V
FILAMENT
POWER
SUPPLY
DC/DC
45V
RESET
ISOLATION
D5V
D5V
AUDIO
8V SW
RESE
T
DET
ILL
DET
ILL
SUPPLY
POWER
to MD MECHA (X33-3190) (CN2)
X34-401-
CN501 2/4
72
FL DC-
18
TP2
FL +B
FL DC+
1920
TP1
TP24 TP23 TP22
TP14 TP13 TP12 TP10
SC BKUP
7
SC RST
MC REQ
SC CON
BU 5V
D GND D GND
LED GND
LED 10V
FL GND FL GND
151617 1314
TP4 TP3
101112 89
TP5
TP6
RESET
IGN DET
SH DATA S
SH DATA H SC DATAIN
MC DATAIN
56234
TP7
TP8 TP9
1
TP11
1.2K
1.2K
R693
R694
4.7K
C691
0.1
VIN2
R692
VC
NC
4
3
GND1
GND2
VOUT1
5
6
TP52 TP51
TP50 TP49 TP48
MD LOS/EJE SW
MD LOE/LIM SW
TP36
TP47 TP46 TP45 TP44 TP43 TP42 TP41 TP40 TP39 TP38 TP37
3
D-OUT
NC
12
MD CLK
MD DATA
A8.0V
456
LCH
AGND
RCH
NC
78910
MD AMUTE
MD MRST
MD MSTOP
NC
11121314
TP35
TP34 TP33
TP32
TP31
MOTOR
22
BU5.0V
DGND DGND
15161718
D5.0V D5.0V
MD LO/EJ
192021
S7.5V
SGND
2324
330u6.3
4.722u16
36
R629
15K
R681
1VIN1
1VOUT2 8
C673
120u10
2VIN
1
ON/OFF SWOUT
5VOS
GND1
4
3
L671
R674
2.2
C621
2.2K
0.1
R633
620
R628
27K
2ROUT
S1
1VCC
STB 7
8
C623
TP603
R622 24
1/2W
R632 24
R623 24
1/2W
1/2W
R621 24
1/2W
R631
R630
R624
100 100
C622
3.3u50
TP601
L601
22uH
C603
R601
470
C602
100u16
2.2
R603
2.2
R602
1.5A
F601
TP602
100u16
R606
220
L602
0.01
3900.1
C606
R610
33K
R609
6.2K
R611
R615
33K 6.8K
R614
R524
62
47u50
C607
0.01
R612
22K
C609
6.2K
R613
C652
R654
2.2 R652 2.2
R551C551
C555
4.7u50
R553
10
6
5
LR-
Lch +
AUX ON+
Rch +
SATELLITE +
2
14 3
AUX ON-
SATELLITE -
NC
8
7
4BUS+
GND S2
BUS- 5
C809
R530
3.9K
OUT
R655
1
R653
2.2 INGND
C655
100u6.3
C505
100u16
R722
22K
R723
13K
C721
1200P
TP702
C701
7P
R721
10K
L701
TP701
13K
1200
P
1.5
K
R715
C711
R714
2.2K
2.
5
F
3
BU
R552C552
4.7u50 10
C559 0.01
R501 1K OFF
2
1
R502 1K
F501 5A
0.47u50
C502 R506
10
R508
750
C508 C506
10u35
0.47u50
C501 10
R505
10u35
1000P
C507
NC
8
7
BUS+
RESET
GND
GND
4
3
BUS-
6
5
MUTE
BUS ON
NC
10
9
NC NC
12
11
Rch
Lch
GND
NC NC
16
15
14
13 18 17
GND
NAVI
20
19
C401
0.01
R71
3
ILL-
ILL+
13
14
FR-
FR+
FL
11
12
C391
1
C392
100u10
1
R391
4.7K
R392
560
R394
560
TP391
OUT GND VCC
3
2
1
R393
75
R604
75
R616
6.2K
R608
12K
R607
47K
R617
C604 100P
TP604
0.47
C601
0.047u5.5
C653
1/2W
1/2W
R626 6.8K
R627 6.8K
820P
C521
820P
C522
47K
R672
470
R673
TP502
TP501
TP503
TP504
TP505
TP509
TP507
TP508
TP506
TP514
TP510
TP512
TP511
TP513
AUD
NAVI
AUD AUD
BUS
68
R509
10
R507
3900P
C404
3900P
C403
3900P
C402
TP553
0.01
C558
TP555 TP556
TP557
AUX
0.1
C557
100K
R554
TP551
TP552
1K
R556
82
R555 TP554
3900u16
C702
3
22
5
20
18
25
19
24
23
FR-
FR+
1000P
C421 3900P C405
TP421
TP401
R716 1.5K
1
C651
12K
R651
BOUT 2
1
4
3
AOUT
GND
AIN
VM1
7
8VCC
5BIN
6VM2 2
1
1u50
C556
TL
TR
31
3
2
4
6
6
4
47u16
C682
100
R525
Q606
Q601-605
Q624,625
Q621-623,626
84
7
1
6
24
1K
R503
1K
R504
7
MU
27
26
33
14
RST
100
R523
47K
R529
BU5V
BU5V-1
BU3.3V
D3.3V
D5V
100
95
94
89 90
4.7K
R401
4.7K
R412
BU-1
RST
R691 2.2
PON5V
A8V
A8VSW
FL+B
FL+B
LED10V
LED10V
BU5V-1
A8V
BU5V
BU5V
BU5V
D5V
2.4
R979 13
R971 15P
C971
15P
C972
13
R972
2.4
R978
A8V
ML
MR
29
55
43
C811
RST
66
79
23
2
5
6
4 3
ILL
15 12
S8V
BU
BU-1
BU-1
FLDC
BU-1 BU-1
100u25
C672
1
R671
+
++
+
+
+
+
+
+ +
+
+
+
+ + +
+ + + + +
IC681
IC671
IC521
IC8
0
IC551
IC651
IC391
A
9.5V
3.3V
6.0V
12.0V
45.0V
5.0V 3.3V
5.0V
0V
0V
0V
4.0V
0V
4.0V
4.0V
8.0V
0V
5.0V
5.0V
2.5V
13.2V
5.0V
0V
5.0V
5.0V
3.3V
8.0V0V
0V
0V
13.2V
5V
0V
0V
5.0V
0V
6
4
2
3
11
32 15
4 4
6
6
4
7
7
898
8
9
X14-967x-xx (1/5)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299