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MZ-E505
3030
6-7. SCHEMATIC DIAGRAM – MAIN Board (3/3) –• See page 25 for Waveform. • See page 31 for IC Block Diagrams.
C204
R204 C203
C305
C303
C302
C854 C851
C306
FB801
FB802
J301
C853C351
R922
R106
R206
C202
C102
C106R107
R103
R203
D855
C994
C955
C304
R302
R303
C301
R105
C104
C804
C803
R818
RB301
C101
C201
TAP801
R301
R819
R817
CN801
D101D201
TP815
S808
6800p
10 0.22
2.2
1
0.1
0.1 0.1
22 4V
6800p100p
150k
6.8k
6.8k
220
2.5V
220
2.5V
2210
4.7k
4.7k
MAZZ068H01S0
100p
0.1
4.7 6.3V
6.8k
220k
10
6.3V
100k
6800p
0.01
470p
100
33k
X4
1
1
33
1M
100
6P
02DZ2.4-Z
(TPH3)
02DZ2.4-Z
(TPH3)
(LED ADJ)
B1
B2
B3
B4
B5
B6
C1
C2
C3
C4
C5
C6
RMC KEY
RMC DTCK
LED R PWM
LED G PWM
SET KEY
XWK1
XHOLD SW
OPEN
LEDVDD
LED R PWM
LED G PWM
SET KEY1
WK DET
GND
(CHASSIS)
(CHASSIS)
(3/3)
L
R
OFF ON
HOLD
Q301
2SC4738F
-Y/GR(TPL3)
REFERENCE
VOLTAGE
SWITCHING
IC301
TA2131FL(EL)
HEADPHONE AMP
BEEP
MUTE
XHP STB
S809
(OPEN/CLOSE DETECT)
SWITCH
BOARD
RVDD
RGND
DATA
KEY
COM
R205
100k
R811
1
(Page 29)
(Page 28)