Block Diagram - Power Amp Section - Sony HCD-FL5D Service Manual

HCD-FL5D
8-4. BLOCK DIAGRAM – POWER AMP Section –
HP SW
(Page 42) 27
FL
OUT
(Page 39) 21
POWER AMP
IC401
R-CH
STANDBY
SWITCH
TH401
Q421 - 423
C
OUT
23
(Page 39)
POWER AMP
IC501
SW
OUT
(Page 39) 24
OVER LOAD
STANDBY
SWITCH
Q521, 522
D502, 552
SL
OUT
(Page 39) 22
POWER AMP
IC431
R-CH
OVER LOAD
STANDBY
SWITCH
Q471, 472
D432, 482
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: AUDIO
OVER LOAD
DETECT
Q401, 451
D402, 452
D420
THERMAL
DETECT
Q419, 420
PROTECT PROTECT
DETECT DETECT
Q850 Q851
DETECT
Q501, 551
D520
DETECT
Q431, 481
D490
M801
(FAN)
M
80 77
SYSTEM CONTROLLER
IC101 (3/4)
J301
PHONES
–2
–1
RY801
RELAY DRIVE
Q801
DC DETECT
Q855, 856
Q854
PROTECTOR
Q852, 853
D860
FAN MOTOR FAN MOTOR
DRIVE CONTROL
Q860, 863 Q861, 862
78 76 72 71 70
40 40
–2
–1
–2
RY802
–1
RELAY DRIVE
Q802
RY803
RELAY DRIVE
Q803
–2
–2
–1
RY804
–1
RELAY DRIVE
Q804
RY805
RELAY DRIVE
Q805
–1
RY806
RELAY DRIVE
Q806
–2
–1
RY807
RELAY DRIVE
Q807
TM801
+
FRONT L
–
+
FRONT R
–
+
SPEAKER
CENTER
–
+
S.WOOFER
–
+
REAR L
–
+
REAR R
–
RELAY BTL
25 (Page 39)