Sony MHC-V7700AV / STR-V7700 Service Manual ▷ View online
FL DISPLAY/KEY LED TEST MODE
Press the REPEAT, ENTER/NEXT and SURROUND buttons
simultaneously.
1.
simultaneously.
1.
All FL segments and all LEDs turn on.
2.
To access the microprocessor information, press the P FILE
key. Each pressing of the P FILE key advances the display on
the FL tube in the following sequence.
key. Each pressing of the P FILE key advances the display on
the FL tube in the following sequence.
3. To check the encoder, press the MUSIC key. The following display
appears on the FL tube.
"K
appears on the FL tube.
"K
0
J
0
V
0"
The number after K indicates the number of times that the key is
pressed. The key which was pressed in the past, is not counted.
The key which is pressed hereafter is counted. Pressing any key
increases the number after K.
pressed. The key which was pressed in the past, is not counted.
The key which is pressed hereafter is counted. Pressing any key
increases the number after K.
The number after J indicates the number of rotations that the JOG
dial is rotated. Turning the JOG dial clockwise increases the number
after J. Turning the JOG dial counter-clockwise decreases the
number after J.
dial is rotated. Turning the JOG dial clockwise increases the number
after J. Turning the JOG dial counter-clockwise decreases the
number after J.
The number after V indicates the number of rotations that the
VOLUME dial is rotated. Turning the VOLUME dial clockwise
increases the number after V. Turning the VOLUME dial counter-
clockwise decreases the number after V.
VOLUME dial is rotated. Turning the VOLUME dial clockwise
increases the number after V. Turning the VOLUME dial counter-
clockwise decreases the number after V.
To exit this mode, perform the "Cold Reset" (reset clearing memory)
as described below.
as described below.
GENERAL TEST MODE
(INCLUDING AMPLIFIER AND TUNER)
(INCLUDING AMPLIFIER AND TUNER)
Press the REPEAT, ENTER/NEXT and CLOCK TIMER SET
buttons simultaneously while the main power is on.
1.
buttons simultaneously while the main power is on.
1.
Sound volume display segment starts blinking.
2.
The tuning enters the PRESET mode.
3.
Rotating the VOLUME control clockwise increases the volume
level to maximum.
Rotating the VOLUME control counter-clockwise decreases
the volume level to minimum.
level to maximum.
Rotating the VOLUME control counter-clockwise decreases
the volume level to minimum.
4.
Pressing the MUSIC key decreases the equalizer curve to
minimum and "EQ CHECK" appears on the display.
Pressing the MOVIE key increases the equalizer curve to
maximum.
Pressing the GAME key makes the equalizer curve flat.
minimum and "EQ CHECK" appears on the display.
Pressing the MOVIE key increases the equalizer curve to
maximum.
Pressing the GAME key makes the equalizer curve flat.
5.
Pressing any of the DBFB, GROOVE or SURROUND key
disappears "EQ CHECK" on the display.
disappears "EQ CHECK" on the display.
To exit this mode, perform the "Cold Reset" (reset clearing memory)
as described below.
as described below.
SECTION 2
TEST MODE
AGING MODE
1.
CD aging mode
To execute the CD aging, set the three discs to the CD tray and
set the function to CD. REPEAT, ENTER/NEXT and LOOP
buttons simultaneously. The CD aging mode starts and the disc
calendar starts blinking.
To execute the CD aging, set the three discs to the CD tray and
set the function to CD. REPEAT, ENTER/NEXT and LOOP
buttons simultaneously. The CD aging mode starts and the disc
calendar starts blinking.
2.
Tape aging mode
To execute the tape aging, set the two tapes to the tape A and B
drives. Set the function to TAPE. Press the REPEAT, ENTER/
NEXT and LOOP buttons simultaneously. Press the A forward
key to start the tape aging mode. "AGING" appears on the
display.
To execute the tape aging, set the two tapes to the tape A and B
drives. Set the function to TAPE. Press the REPEAT, ENTER/
NEXT and LOOP buttons simultaneously. Press the A forward
key to start the tape aging mode. "AGING" appears on the
display.
CD SERVICE MODE
Turn on the main power. Press the REPEAT, ENTER/NEXT and
KARAOKE PON/MPX buttons simultaneously.
VACS toggles between ON and OFF.
KARAOKE PON/MPX buttons simultaneously.
VACS toggles between ON and OFF.
VACS LEVEL DISPLAY
Turn on the main power. Press the EDIT, ENTER/NEXT and
KARAOKE PON/MPX buttons simultaneously.
VACS level appears on the display.
KARAOKE PON/MPX buttons simultaneously.
VACS level appears on the display.
CD SHIP MODE
Turn on the main power. Press the PLAY MODE and POWER
buttons simultaneously.
The main power is turned off and LOCK appears on the display.
buttons simultaneously.
The main power is turned off and LOCK appears on the display.
TUNER STEP CHANGE
Turn on the main power. Set the function to TUNER. Select MW
band from the present tuning.
Turn off the main power. Press the ENTER/NEXT and POWER
buttons simultaneously. The main power is turned on and the
changed step appears on the display.
band from the present tuning.
Turn off the main power. Press the ENTER/NEXT and POWER
buttons simultaneously. The main power is turned on and the
changed step appears on the display.
MD/VIDEO 1 FUNCTION CHANGE
Press the FUNCTION and POWER buttons simultaneously while
the main power is off. When the function is set to VIDEO 1, the
function is changed to MD and MD appears on the display.
When the function is set to MD, the function is changed to VIDEO
1 and VIDEO 1 appears on the display.
the main power is off. When the function is set to VIDEO 1, the
function is changed to MD and MD appears on the display.
When the function is set to MD, the function is changed to VIDEO
1 and VIDEO 1 appears on the display.
COLD RESET (Reset which clears memory.)
Press the REPEAT, ENTER/NEXT and DISPLAY buttons
simultaneously at any time. The system is reset while clearing
memory.
simultaneously at any time. The system is reset while clearing
memory.
HOT RESET
(Reset which does not clear memory.)
(Reset which does not clear memory.)
Press the REPEAT, ENTER/NEXT and TIMER SELECT buttons
simultaneously at any time. The system is reset without clearing
memory.
simultaneously at any time. The system is reset without clearing
memory.
STR microprocessor version number
HCD microprocessor version number
VCD microprocessor version number (VCD model only)
Model name
Destination
— 5 —
3-1.
CIRCUIT BOARDS LOCATION
SECTION 3
DIAGRAMS
PRI BOARD
SEC BOARD
PANEL BOARD
AVIN BOARD
JOG BOARD
VOLUME BOARD
MIC ECHO BOARD
MAIN BOARD
SUR BOARD
AMP-A BOARD
ENCAPSULATED
COMPONENT
COMPONENT
— 6 —
SUPPLY POWER BOARD
SURROUND
AMP BOARD
AMP BOARD
KEY-CON BOARD
– 29 –
3-9.
IC PIN FUNCTION
• IC501 TMP87CM75F-6623 (DISPLAY CONTROL)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
—
—
O
I
O
O
O
O
I
I
—
O
I
I
O
I
—
I
I
I
I
I
I
I
I
I
I/O
I/O
O
—
—
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
—
—
—
Description
Not used
Power supply (–35V)
Transfer clock output serial data
Serial data input
Serial data output
Chip enable output
Latch output to IC504
H : D542, D543 ON
Stereo signal input
Tuned signal input
Power supply (Ground)
Oscillator connection terminal (8MHz)
Oscillator connection terminal (8MHz)
Reset signal input terminal
Oscillator connection terminal (32.768kHz)
Oscillator connection terminal (32.768kHz)
Not used (Ground)
AC Power supply off
RDS DATA input
RDS clock input
SIRCS signal input
JOG dial encoder input
Volum encoder input
Volum encoder input
JOG dial encoder input
AUB input
12C clock I/O
12C data I/O
AUB output
Power supply (5V)
Power supply (Ground)
Latch output to IC105
Latch output to IC2002
Mute output to transistor
L : Mute ON
DBFB level control output
L : DBFB HIGH
Latch output to IC6003
H : Key con ON
L : SP relay ON
PRO LOGIC RELAY output
Key data input (A/D converter)
Key data input (A/D converter)
Key data input (A/D converter)
Spectrum analyzer signal input
Spectrum analyzer signal input
Spectrum analyzer signal input
Spectrum analyzer signal input
Input for model select
Power supply for analog (Ground)
Power supply (+5V)
Power supply (Ground)
Pin Name
NC
VG
COM CLK
ST DATA IN
COM DATA
ST CE
LED LAT
POWER ON/OFF
STEREO
TUNED
Vss
X OUT
X IN
RESET
XT OUT
XT IN
GND
BACK UP
RDS DATA
RDS CLK
SIRCS IN
JOG IN B
VOL IN B
VOL IN A
JOG IN A
AUB IN
12C CLK
12C DATA
AUB OUT
V
DD
Vss
EQ LAT
VR LAT
TA MUTE
VIDEO MD
KEY CON LAT
KEY CON ON/OFF
POWER ON/OFF
P LOG RELAY
KEY IN 0
KEY IN 1
KEY IN 2
SPEANA 0
SPEANA 1
SPEANA 2
SPEANA 3
SUFFIX
VASS
VAREF
V
DD
– 30 –
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
—
Description
H : MUTE
L : Signal Receiving
Not used
Pin Name
FL–1G
FL–2G
FL–3G
FL–4G
FL–5G
FL–6G
FL–7G
FL–8G
FL–9G
FL–10G
FL–11G
FL–12G
FL–13G
FL–14G
FL–P1
FL–P2
FL–P3
FL–P4
FL–P5
FL–P6
FL–P7
FL–P8
FL–P9
FL–P10
FL–P11
FL–P12
FL–P13
FL–P14
FL–P15
FL–P16
FL–P17
FL–P18
FL–P19
FL–P20
FL-P21
FL–P22
FL–P23
FL–P24
FL–P25
FL–P26
FL–P27
FL–P28
FL–P29
FL–P30
FL–P31
FL–P32
FL–P33
FL–P34
ST MUTE
NC
Grid output to FL501
Segment output to FL501
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