Block Diagram - Damp Section (2/2) - Sony HCD-GTR333 Service Manual

5-7. BLOCK DIAGRAM – DAMP Section (2/2) –
EXCEPT HCD-GTR333
OP AMP
IC4406
MAIN
SW R
F 3 INA+
SECTION
SW L
6 INB-
(Page 20)
HCD-GTR555/HCD-GTR777
(3CH DAMP BOARD)
HCD-GTR888
(4CH DAMP BOARD)
HCD-GTR333/GTR555/GTR777/GTR888
HCD-GTR888
OP AMP POWER AMP.
IC4906 IC4901
1
BOUT 7 3 IN HO 14
1 VAA LO 11
HCD-GTR555/HCD-GTR777
(3CH DAMP BOARD)
5
HCD-GTR888
(4CH DAMP BOARD)
1
7
HCD-GTR555/HCD-GTR777
(3CH DAMP BOARD)
HCD-GTR888
IN (4CH DAMP BOARD)
3
1 VAA
5
Q4508 : HCD-GTR888
Q4504 : HCD-GTR888
Q4509 : EXCEPT
Q4505 : EXCEPT
HCD-GTR333
HCD-GTR333
RESET SWITCH SD SWITCH
Q4516, Q4517
POWER
AUDIO DRIVER
TH4500
THERMA DETECT
COMPARATOR
2 6
IC4900
(2/2)
HCD-GTR333
(2CH DAMP BOARD)
HCD-GTR555/HCD-GTR777
TH4501 (3CH DAMP BOARD)
POWER AMP.
HCD-GTR888
IC4902
(4CH DAMP BOARD)
1
HO
14 POWER
AUDIO DRIVER
LO 11
Q4512, Q4513
SYSTEM CONTROLLER
IC500 (7/7)
74 /SD-SLOW SP-RELAY 66
71 DAMP_RESET
/RES-DET 73
68 /SD-FAST
THERMA
DETECT SWITCH
Q4524 (2/2)
Q4068–4070 Q4060, Q4061 Q4012
PROTECTION PROTECTION VOLT REG.
SWITCH SWITCH SWITCH
VOLT REG.
SWITCH
Q4013
23 23
HCD-GTR333/GTR555/GTR777/GTR888
RY4002
DC DETECT Q4028,
SWITCH (CH-L) Q4029
RESET DETECT Q4018,
SWITCH (CH-L) Q4022
EXCEPT HCD-GTR333
Q4038
RELAY
DRIVER
Q4030, Q4031
DC DETECT
SWITCH (CH-R)
RY4003
RESET DETECT
SWITCH (CH-R)
Q4019, Q4023
DC DETECT
SWITCH
Q4063 (2/2)
EXCEPT HCD-GTR333
+VOLT REG.
IC4404
+VOLT REG.
Q4058
HCD-GTR555/HCD-GTR777
(3CH DAMP BOARD)
VOLT REG.
SWITCH
HCD-GTR888
(4CH DAMP BOARD)
–VOLT REG.
IC4405
HCD-GTR555/HCD-GTR777
(3CH DAMP BOARD)
VOLT REG.
SWITCH
HCD-GTR888
(4CH DAMP BOARD)
Q4059 –VOLT REG.
EXCEPT HCD-GTR333
TB4000 : HCD-GTR777/HCD-GTR888
TB4003 : HCD-GTR555
L
IMPEDANCE
SUBWOOFER
R