Block Diagram Power Section - Sony STR-DA777ES Service Manual
Hide thumbs
Also See for STR-DA777ES:
- Operating instructions manual (64 pages) ,
- Service manual (80 pages) ,
- Technical background (38 pages)
Table of Contents
Advertisement
3-5. BLOCK DIAGRAM POWER SECTION
DIGITAL SECTION
+5VV
S/C VIDEO
SECTION
-5VV
-5V
AC3RF
SECTION
+5VB
SWITCH
Q305
+5V
+35V
DISPLAY
SECTION
+5VB
D POWER
V POWER
PORY48
E
STOP OUT
(Page 10)
POW CONT
All manuals and user guides at all-guides.com
+15V
VOLUME
SECTION
-15V
+15V
-15V
+15V
AUDIO A/V
SECTION
-15V
-15V
IC310
+5V
+5D1
3
1
REG
+5D2
IC308
+3V
3
1
+3D1
REG
IC309
+3V
SWITCHING
+3D2
3
1
REG
Q301,309
+12V
TUNER
SECTION
SWITCH
Q303
+5V
IC314-316
PHONO
+15V
+5V
+5VA
3
1
SECTION
REG
-15V
IC326-328
-5V
-5VA
3
2
REG
IC312
+5V
SWITCHING
3
1
REG
Q302
IC313
SWITCHING
-5V
3
2
Q306
REG
SWITCH
Q304
IC311
+5V
3
1
REG
+35V SW
Q310
E VOL SECTION
IC3105
+5V
+5V
3
1
REG
+15V
-15V
IC3205
+15V
3
1
REG
IC3455
-15V
3
2
AMP/SPTM
REG
SECTION
IC3305
IC4001
+15V
+18V
3
1
3
1
REG
REG
IC3306
IC4002
-15V
-18V
3
2
3
2
REG
REG
CTRLA1 SECTION
IC1402
+12V
1
3
REG
IC1401
+5V
1
3
REG
+B
-B
RY24V
RY801
S801
80HM
RELAY
IMPEDANCE
DRIVE
SELECTOR
Q801
40HM
RY802
SWITCH
Q802
11
11
F803
D807
+20V
T901
120V
F804
-20V
F805
D811
0V
120V
+9V
110V
F806
0V
-9V
D812-815
+38V
JW801
F801
D801
F1
D802
F2
JW802
F802
D804 D805
T902
D901-904
D908
D909
IC901
+5V
3
1
REG
AC DET
Q902
RY901
RELAY
DRIVE
Q901
STR-DA777ES/V777E
E/PX MODEL
S901
VOL SEL
120V
240V
220V
E/PX
MODEL
F903
MY/SP/AUS/
F901
E/PX/CH
MODEL
F902
JW901
CED/CH/SP
US/CND
MODEL
MODEL
JW902
J901
US/CND
MODEL
JW903
AC IN
Advertisement
Table of Contents
Need help?
Do you have a question about the STR-DA777ES and is the answer not in the manual?
Questions and answers
My turntable doesn't play audible music when Phono is selected. The screen shows V: Phono A: Tuner. The tuner plays sound not the turntable.
Your Sony STR-DA777ES turntable may not be playing audible music when "Phono" is selected due to the following possible reasons:
1. Low Signal Output – The Phono input is designed for very low-level signals from a turntable. If you are using a turntable without a built-in preamp, you may need an external phono preamp.
2. Incorrect Connections – Ensure the turntable is properly connected to the "Phono" input on the receiver. If connected to a different input, the signal may not be amplified correctly.
3. Grounding Issue – If your turntable has a ground wire, ensure it is connected to the receiver’s ground terminal to prevent hum or weak signal.
4. Phono Input Sensitivity – The receiver's phono sensitivity is 5 mV. If your turntable's cartridge output is too low, it may not produce enough signal for audible playback.
5. Defective Cartridge or Stylus – Check if the turntable’s cartridge and stylus are in good condition and properly installed.
6. Mute or Incorrect Settings – Ensure the receiver is not muted and that the correct input is selected.
7. Faulty Phono Stage – If all connections are correct and other inputs work fine, the built-in phono stage may have a fault.
Check these factors to troubleshoot and resolve the issue.
This answer is automatically generated