TA-VA777ES
AEP Model
UK Model
SERVICE MANUAL
INTEGRATED AV AMPLIFIER
MICROFILM
-- Continued on next page --
SPECIFICATIONS
Manufactured under license from Dolby Laboratories
Licensing Corporation.
Dolby, "DOLBY", the double-D symbol ;, AC-3 and
"Pro Logic" are trademarks of Dolby Laboratories
Licensing Corporation.
Audio section
POWER OUTPUT
Stereo mode 120 W + 120 W
(8 ohms, DIN 1 kHz)
100 W + 100 W
(4 ohms, DIN 1 kHz)
100 W + 100 W
(8 ohms, THD 0.05%
20 20 kHz)
90 W + 90 W
(4 ohms, THD 0.05%
20 20 kHz)
Surround mode
Front: 120 W + 120 W
Centera): 120 W
Reara): 120 W + 120 W
(8 ohms, DIN 1 kHz)
Front: 100 W + 100 W
Centera): 100 W
Reara): 100 W + 100 W
(4 ohms, DIN 1 kHz)
a) Depending on the sound field settings and
the source, there may be no sound output.
Frequency response
PHONO:
20 Hz ~ 20 kHz
RIAA
±0.5 dB
LINE (TUNER, CD,
MD/DAT, TAPE,
DVD, TV/LD,
VIDEO 1, 2, and
VIDEO 3):
10 Hz ~ 100 kHz
+0.5/2.0 dB
(ANALOG DIRECT)
Signal-to-noise ratio
DIGITAL IN: 100 dB
(20 kHz LPF, A)
PHONO: 86 dB*
(A, 5mV)
LINE: 100 dB*
(20 kHz LPF, A)
* ANALOG DIRECT
Inputs (Analog)
PHONO:
Sensitivity: 4 mV
Impedance:
50 kilohms
LINE (TUNER, CD,
MD/DAT, TAPE,
DVD, TV/LD,
VIDEO 1, 2, and
VIDEO 3):
Sensitivity: 200 mV
Impedance:
50 kilohms
Inputs (Digital)
Coaxial (DVD, CD):
Sensitivity:
Impedance: 75 ohms
Optical (DVD, TV/LD,
MD/DAT):
Sensitivity:
Impedance:
2
PART NO.
MODEL IDENTIFICATION
BACK PANEL
MODEL
AEP model
UK model
PARTS No.
4-222-054-5s
4-222-054-6s
Video section
Inputs
Video: 1 Vp-p 75 ohms
S-video:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p
75 ohms
Outputs
Video: 1 Vp-p 75 ohms
S-video:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p
75 ohms
General
Power reqements
230 V AC, 50/60 Hz
Power consumption
420 W
AC outlets
2 switched, total 100 W
Dimensions 430
× 174 × 462 mm
including projecting
parts and controls
Mass (Approx.)
24.3 kg
Supplied accessories
Design and specifications are subject
to change without notice.
· Remote commander RM-TP503 (remote) (1)
· LR6 (size-AA) alkaline batteries (4)
· Coin shaped lithium battery (CR-2032) (1)
Outputs (Analog)
REC OUT
(MD/DAT, TAPE,
VIDEO 1, 2, 3):
Voltage: 200 mV,
Impedance:
1 kilohm
PRE OUT (FRONT L/R,
CENTER, REAR L/R,
SUB WOOFER):
Voltage: 2 V
Impedance:
1 kohms
PHONES:
Accepts low- and
high-impedance
headphones
Outputs (Digital)
Optical (MD/DAT)
Sampling Frequency
48 kHz
EQ
BASS:
99 Hz ~ 1.0 kHz
(21 steps)
MID:
198 Hz ~ 10 kHz
(37 steps)
TREBLE:
1.0 kHz ~ 10 kHz
(23 steps)
Gain levels:
±10 dB, 0.5 dB step
Decodable Digital Formats
Dolby Digital (AC-3),
DTS
3
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
TABLE OF CONTENTS
1.
GENERAL ······································································ 4
2.
ADJUSTMENT ······························································ 6
3.
DIAGRAMS ···································································· 7
3-1.
Circuit Boards Location ····················································· 7
3-2.
Block Diagram Main Section ············································ 8
3-3.
Block Diagram Digital Section ········································· 9
3-4.
Block Diagram Control Section ······································ 10
3-5.
Block Diagram Power Section ········································ 11
3-6.
Printed Wiring Board Audio Section ······························· 12
3-7.
Schematic Diagram Audio Section ·································· 13
3-8.
Printed Wiring Board Video Section ······························· 14
3-9.
Schematic Diagram Video Section ·································· 15
3-10. Printed Wiring Board Volume Section(SIDE A) ············· 16
3-11. Printed Wiring Board Volume Section(SIDE B) ············· 17
3-12. Schematic Diagram Volume Section(1/2) ······················· 18
3-13. Schematic Diagram Volume Section(2/2) ······················· 19
3-14. Printed Wiring Board Digital Section(SIDE A) ·············· 20
3-15. Printed Wiring Board Digital Section(SIDE B) ·············· 21
3-16. Schematic Diagram Digital Section(1/7) ························ 22
3-17. Schematic Diagram Digital Section(2/7) ························ 23
3-18. Schematic Diagram Digital Section(3/7) ························ 24
3-19. Schematic Diagram Digital Section(4/7) ························ 25
3-20. Schematic Diagram Digital Section(5/7) ························ 26
3-21. Schematic Diagram Digital Section(6/7) ························ 27
3-22. Schematic Diagram Digital Section(7/7) ························ 28
3-23. Printed Wiring Board AMP Section ································ 29
3-24. Schematic Diagram AMP Section(1/2) ··························· 30
3-25. Schematic Diagram AMP Section(2/2) ··························· 31
3-26. Printed Wiring Board Display Section(SIDE A) ············· 32
3-27. Printed Wiring Board Display Section(SIDE B) ············· 33
3-28. Schematic Diagram Display Section(1/2) ······················· 34
3-29. Schematic Diagram Display Section(2/2) ······················· 35
3-30. Printed Wiring Board Switch Section ····························· 36
3-31. Printed Wiring Board Control Jack Section ···················· 37
3-32. Schematic Diagram Control Jack Section ······················· 37
3-33. Printed Wiring Board Speaker Terminal Section ············ 38
3-34. Schematic Diagram Speaker Terminal Section ··············· 39
3-35. Printed Wiring Board Power Supply Section ·················· 40
3-36. Printed Wiring Board AC Power Supply Section ············ 41
3-37. Schematic Diagram Power Supply Section ····················· 42
3-38. IC Block Diagrams ··························································· 43
3-39. IC Pin Function Description ············································· 47
4.
EXPLODED VIEWS
4-1.
Case Section ····································································· 52
4-2.
Chassis Section ································································· 53
4-3.
Front Panel Section ·························································· 54
4-4.
Back Panel Section ··························································· 55
5.
ELECTRICAL PARTS LIST ··································· 56
4
SECTION 1
GENERAL
FRONT PANEL SECTION
1
?/1 switch
2
INPUT SELECTOR knob
3
AUDIO SPLIT button
4
DIGITAL/ANALOG button
5
5.1CH INPUT button
6
IR emitter
7
IR receptor
8
MEMORY button
9
SOUND FIELD PRESET 1 5 button
0
MULTICHANNEL DECODING indicator
qa
A.F.D button
MODE +/ buttons
2CH button
ANALOG DIRECT button
qs
EQ BANK button
1
2
4
5
3
wf
wg
qf
qa
0
wd
ws
wa ql
qj
qh
qk
w;
qg
qd
9
6 7
8
qs
SOUND FIELD PRESET
PHONES
SPEAKERS
A
OFF
A+B
B
MEMORY
A.F.D
0
10
MULTI CHANNEL DECODING
OPEN/
CLOSE
MASTER VOLUME
1
9
8
7
2
3
6
5
4
AUDIO SPLIT
DIGITAL / ANALOG
?/1
+
ENTER
EQ
SUR
LEVEL
NAME
CUSTOM
SET UP
VIDEO
S-VIDEO
L
AUDIO
R
45
3
2
1
2 CH
ANALOG DIRECT
EQ BANK
5.1CH INPUT
+
SOUND FIELD
INPUT
SELECTOR
MODE
qd
MASTER VOLUME knob
qf
OPEN/CLOSE button
qg
ENTER button
qh
Cursor buttons (
I/i)
qj
Jog dial
qk
SET UP button
ql
LEVEL button
w;
CUSTOM button
wa
SUR button
ws
NAME button
wd
EQ button
wf
SPEAKERS selector knob
PHONES jack
wg
VIDEO 3 jack
5
REAR PANEL SECTION
1
DIGITAL jack
2
MONITOR OUT jack
3
VIDEO 1 jack
4
VIDEO 2 jack
5
DVD jack
6
TAPE jack
7
MD/DAT jack
8
TUNER jack
9
PHONO jack
0
CONTROL A1 II jack
qa
RS-232C
AC OUTLET
+
SPEAKERS
FRONT
REAR
CENTER
B
A
L
R
L
R
L
R
R
L
R
L
R
IN
REC
OUT
IN
IN
OUT
IN
IN
IN
OUT
IN
CENTER
SUB WOOFER
REAR
FRONT
CENTER
SUB
WOOFER
REAR
FRONT
TV/
LD
DVD
VIDEO 1
MONITOR OUT
VIDEO 2
REC
OUT
L
R
AUDIO
S-VIDEO
DVD
IN COAX
CD
IN COAX
DVD
IN OPT
TV/LD
IN OPT
MD/DAT
IN OPT
MD/DAT
OUT OPT
CD
IN OPT
VIDEO
L
2ND AUDIO OUT
PRE OUT
5.1CH INPUT
4
8
IMPEDANCE
SELECTOR
TAPE
MD/
DAT
CD
CONTROL
A1
IMPEDANCE USE 4 - 16
SIGNAL GND
U
L
R
TUNER
L
R
PHONO
ql
qh
qf
qg
qj
wa w;
qk
ws
12
6
8
0
qa
9
34 5
qs
qd
7
qs
AC OUTLET
qd
Power cord
qf
IMPEDANCE SELECTOR switch
qg
FRONT SPEAKER terminal
qh
CENTER SPEAKER terminal
qj
REAR SPEAKER terminal
qk
CD jack
ql
2ND AUDIO OUT jack
w;
PRE OUT jack
wa
TV/LD jack
ws
5.1CH INPUT jack