Sony HCD-VX550 / MHC-VX550 Service Manual ▷ View online
HCD-VX550
41
41
7-20.
SCHEMATIC DIAGRAM PANEL BOARD
• Refer to page 48 for IC Block Diagrams. • Refer to page 58 for IC Pin Function Description.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
16
(Page 38)
(Page 42)
HCD-VX550
42
42
7-21.
PRINTED WIRING BOARD CD SW/5V POWER BOARD
• Refer to page 23 for Circuit Boards Location.
7-22.
SCHEMATIC DIAGRAM CD SW/5V POWER BOARD
16
27
(Page 40)
(Page 35)
16
(Page 41)
(Page 39)
7.3
4.7 7.3
5.0
9.3
8.1
HCD-VX550
43
43
7-23.
PRINTED WIRING BOARD TRANSFORMER BOARD
• Refer to page 23 for Circuit Boards Location.
7-24.
SCHEMATIC DIAGRAM TRANSFORMER BOARD
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
• Semiconductor
Location
Ref. No.
Location
D971
A-2
D972
A-1
D973
A-1
Q971
A-1
27
16
(Page 35)
(Page 35)
16
(Page 38)
(Page 37)
The components identified by
mark
mark
!
or dotted line with mark
!
are critical for safety.
Replace only with part number
specified.
specified.
HCD-VX550
44
44
7-25.
PRINTED WIRING BOARD SURROUND BOARD
• Refer to page 23 for Circuit Boards Location.
7-26.
SCHEMATIC DIAGRAM SURROUND BOARD
• Refer to page 47 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
16
(Page 35)
16
(Page 36)
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