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Denon RCD-M39 Service Manual

Denon RCD-M39
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45
TROUBLE SHOOTING
1. VFD dosen't light
Check Reset signal for System µ-com.
MCU_CD B'D
[IC11] : 82pin RESET
"H" level O.K.?
Check Oscillation waveform.
MCU_CD_B'D
[IC11] : 72pin
10MHz OK?
Check Power On Signal.
MCU_CD B'D
[IC11]:86pin P_DWN
"H" level OK?
Check Power Supply Voltages for VFD.
FRONT B'D
[FL81] : 38pin HV
[FL81] : 37pin VDD
[FL81] : 1pin F1-43pin F2
Check Reset Signal for VFD.
FRONT B'D
[FL81] : 35pin/RST
"H" level O.K.?
Check VFD dirive Signal.
FRONT B'D
[FL81] : 32,33,34pin DA,CP,CS
END
Check Power Supply Voltages for System µ-com.
MCU_CD B'D
ST+3.9V, [PMSN] : 1pin
[D109] cathode
Check Soldering.
[PMSN] : 1pin
SUB TRANS B'D
Check Soldering.
[IC11] on MCU_CD B'D
Check Soldering.
[X101] on MCU_CD B'D
Check Soldering.
[PMMO] : 2pin on MCU_CD B'D
SUB TRANS B'D
Check Soldering.
FRONT B'D [CBFJ] : 3pin +VKK
FRONT B'D [CBFJ] : 2pin FL1 / 1pin FL2
FRONT B'D [FCFA] : 1pin VFD+3.3V
POWER B'D [CBSK] : 2pin FL1 / 1pin FL2
POWER B'D [CBSK] : 3pin VFD3.3V
MCU_CD B'D [FCMA] : 1pin VFD+3.3V
Check Parts
POWER B'D
Q909,D910,D909,D911,D912 OK?
Check Soldering.
FRONT B'D [FCFA] : 3pin VFD_RST
MCU_CD B'D [FCMA] : 3pin VFD_RST
[IC11] on MCU_CD B'D
Check Soldering.
FRONT B'D [FCFA] : 4,5,6pin
VFD_CE,VFD_CLK,VFD_DI
MCU_CD B'D [FCMA] : 4,5,6pin
VFD_CE,VFD_CLK,VFD_DI
[IC11] on MCU_CD B'D
NG
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK

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Denon RCD-M39 Specifications

General IconGeneral
BrandDenon
ModelRCD-M39
CategoryCar Receiver
LanguageEnglish

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