Sony MHC-V50 Service Manual

MHC-V50/V50D
26
SMPS Board Diagnosis Flow (1/2)
SECTION 5
TROUBLESHOOTING
(4)
(6)
(3)
(7)
(9)
(5)
(8)
(2)
(1)
The output from SMPS board check as below.
AC IN
Yes
Yes
No
No
Yes
A
Check whether the state of a cable and outlet are normal.
If there are no problems, please check circumference circuit
for main-on from MOTHERBOARD board side.
The board is function normally.
The Power control signal to SMPS board condition check below.
(Check SMPS board only) NO002 Pin3, 6-7 = GND Pin 9 = 3.3V NO001 Pin 1-6 = GND (Connect NO001 and NO002 together when grounding)
(1) AC input (2) F901 – Fuse (3) Sub power transformer (4) NO001 Pin1-6: V1 GND Pin7-11: V1 (5) Main power transformer
(6) NO002 Pin1:13.5V Pin3: AGND Pin4-5: 13.5V
Pin6-7: M/DGND Pin8: AC-DET
Pin9: MAIN-ON (7) FUSE RESISTOR
(8) MOSFET (9) BRIDGE DIODE
NO002 Pin1, 4, 5 = 13.5V (Standby, Demo, Power on) NO001 Pin7-11 = 36V (Power on), 0V (Standby & Demo)

Sony MHC-V50 Specifications

General

Type	Home audio tower system
Cassette deck	No
Product color	Black
Disc loading type	Tray
Optical disc player	Yes
Number of optical discs	1 discs
Coloration	Monochromatic
Bluetooth profiles	A2DP, AVRCP, SPP
Illumination location	Front
Analog signal format system	NTSC, PAL
Speaker type	3-way
RMS rated power	660 W
Woofer diameter	200 mm
Tweeter diameter	40 mm
Number of speakers	1
Mid-range driver diameter	80 mm
FM band range	87.5 - 108 MHz
Supported radio bands	FM
Preset stations quantity	20
Recording on	USB
Playback modes	Normal, Repeat, Shuffle
Playback disc formats	CD audio, DVD-Audio, VCD
Audio formats supported	AAC, MP3, WAV, WMA
Video formats supported	MPEG1, MPEG4, XVID
Volume control	Digital
Power source	AC
Power consumption (standby)	0.5 W
Power consumption (typical)	120 W

Weight and Dimensions

Depth	300 mm
Width	293 mm
Height	798 mm
Weight	14000 g