CFD-V77S (serv.man2) - Sony Audio Service Manual (repair manual)

cfd-v77s (serv.man2) service manual
Model
CFD-V77S (serv.man2)
Pages
22
Size
4.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / SUPPLEMENT-1
File
cfd-v77s-sm2.pdf
Date

Read Sony CFD-V77S (serv.man2) Service Manual online

CFD-V77S
AEP Model
E Model
SERVICE MANUAL
SUPPLEMENT-1
File this supplement with the Service Manual.
Subject :
1. Circuit Boards change
• IC microcomputer change
2. Optional pick up block change
2000.07
— 2 —
SECTION 1
ADJUSTMENT
Notes on Check
1.
Perform the traverse check in the CD test mode.
After check, be sure to exit the test mode.
2.
Perform check in the order given.
3.
Use the disc (YEDS-18, Parts No. 3-702-101-01) only when
so indicated.
Before Check
Put the set into test mode and perform the following  checks.
Repair if there are any problems.
• Sled Motor Check
Press > , . keys and confirm that the Optical pick-up  moves
smoothly from the innermost to outermost circumference and back
smoothly and with no catching or abnormal noises.
(Cancellation of BTL mute)
> : Optical pick-up moves to the outer circumference.
. : Optical pick-up moves to the inner circumference.
Focus Search Check
1.
Press the CD u key. (Focus search operation is performed
continuously.)
2.
Look at the Optical pick-up objective lens and confirm that it
moves up and down smoothly, with no catching or abnormal
noises.
3.
Press x button.
Confirm that focus search operation stops. If it does not, press
x button again longer.
How to Enter the Set into Test Mode
1.
Set the function switch to power off.
2.
Set the function switch to CD while MODE key and > key
pressing.
The set is into CD test mode (
88 is displayed).
3.
Turn the power off to release test mode.
How to Exit the Test Mode
Turn the POWER OFF.
CD SECTION
(Page 14,15)             : Changed portion
1. ADJUSTMENT
································································· 2
2. DIAGRAMS
2-1. Block Diagram ································································ 4
2-2. Printed Wiring Board ······················································ 7
2-3. Schematic Diagram     Audio Section ··························· 11
2-4. Schematic Diagram     CD Section ······························· 15
2-5. Schematic Diagram     Tuner Section ··························· 19
2-6. IC Pin Function Description ········································· 21
2-7. IC Block Diagrams ······················································· 24
3. EXPLODED VIEWS
······················································ 26
4. ELECTRICAL PARTS LIST
······································· 28
(Page 1)              :Changed portion
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Model Name Using Similar Mechanism
CFD-V17
CD
CD Mechanism Type
KSM-880DAA
Section
Optical Pick-up Name
      ———
Tape deck
Model Name Using Similar Mechanism
CFD-V17
Section
Tape Transport Mechanism Type
MF-V10-117
CFD-V77S
Focus Bias Check
This check is to be done when the optical block replaced.
Check Procedure:
1. Connect the oscilloscope to test point TP (VC) and TP (RF) on
MAIN board.  Insert disk (YEDS-18).
2. Put the set into test mode.
3. Opitical pick-up setting to the center by + or – button pushing.
4. Press the u button and press the DISPLAY ENTER button.
(Tracking servo ON)
5. Check that the oscilloscope wavewform is as shown in the figure
below (eye pattern).
A good eye pattern means that the diamond shape (
) in the
center of the waveform can be clearly distinguished.
6. Release test mode after adjustment is completed.
• RF signal reference waveform (eye pattern)
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensivity.
[MAIN BOARD] (Conductor side)
TRAVERSE Check
This check is to be done when the optical pick-up block is replaced.
Check Procedure:
1.
Connect the oscilloscope to test point TP (VC) and TP (TE) on
MAIN board.  Insert disk (YEDS-18) .
2.
Put the set into test mode.
3.
Optical pick-up setting to the center by > or . button
pushing.
4.
Press u button.
5.
Check that the oscilloscope traverse waveform is symmetrical,
as shown in the figure below.
6.
Release test mode after adjustment is completed.
[MAIN BOARD] (Conductor side)
VOLT/DIV : 0.2V
TIME/DIV : 500ns
1.1Vp-p – 1.3Vp-p
— 3 —
— 4 —
— 5 —
— 6 —
SECTION 2
DIAGRAMS
2-1. BLOCK DIAGRAM
VOLT/DIV : 0.1V
TIME/DIV  : 1ms
1.0V-2.0V
 TP
(VC)
 TP
(FE)
 TP
(RF)
 TP
(TE)
+
Oscilloscope
(DC range)
TP (VC)
TP (TE)
TP (FE)
 TP
(VC)
 TP
(FE)
 TP
(RF)
 TP
(TE)
+
Oscilloscope
(DC range)
TP (VC)
TP (RF)
VOLTAGE
SELECTION
BOARD
E,EA,SP MODELS
AEP, IT, CET MODELS
CNB907
3
MONO ST
BOARD
AEP, IT , CET MODEL
RFO
OPTICAL PICK-UP
BLOCK
(KSM-880DAA)
5
7
6
4
8
3
10
12
14
15
13
16
CNB701
3
4
1
2
5
6
CNP702
1-4
5-18
CNP801
CNJ804
LCD BOARD
CONTROL BOARD
1
11
12
14
13
15
16
27 SSTP
5 A
6 B
8 D
7 C
10
11
3
4
12
24
30 TFDR
20
14 XLON
23
31 TRDR
5
32 FFDR
6
33 FRDR
2
28 SFDR
3
29 SRDR
25
26 MDP
MUTE
16
51 RFAC
FE 14
3
FE
30
1
RST
SENS 8
5
SENS
SCOR 20
1
SCOR
SCLK 9
6
SCLK
SQCK 2
7
SQCK
SQSO 1
8
SQSO
XRST 3
9
XRST
CLOK 7
10 CLOCK
XLAT 6
11 LATCH
DATA 5
12 DATA
13 AGCCONT
TE 13
LD ON 22
41 TE
40 SE
AGCCONT 20
67
66
X701
16.9344MHz
IC702
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
LOUT1 72
LOUT2 75
IC801
LCD DRIVE
SYSTEM CONTROL
IC802
RESET
14
REC
3
MUTE
2
DOOR
CNP803
22
KEY-1
KEY
SWITCH
S803-806
23
KEY-2
KEY
SWITCH
S801,802
41
38
55
42
XTAI
XTAO
31
32
X801
4MHz
XTAL
EXTAL
RF AMP
1
3
5
CONT
VM
VOUT
IC401
POWER CONTROL
VOLTAGE
CONTROL
Q402
VOLTAGE
CONTROL
Q405
(LOADING)
• Abbreviation
EA
: Saudi Arabia model.
SP
: Singapore model.
IT
: Italian model.
CET
: East European and Russian model.
CFD-V77S
Focus Bias Check
This check is to be done when the optical block replaced.
Check Procedure:
1. Connect the oscilloscope to test point TP (VC) and TP (RF) on
MAIN board.  Insert disk (YEDS-18).
2. Put the set into test mode.
3. Opitical pick-up setting to the center by + or – button pushing.
4. Press the u button and press the DISPLAY ENTER button.
(Tracking servo ON)
5. Check that the oscilloscope wavewform is as shown in the figure
below (eye pattern).
A good eye pattern means that the diamond shape (
) in the
center of the waveform can be clearly distinguished.
6. Release test mode after adjustment is completed.
• RF signal reference waveform (eye pattern)
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensivity.
[MAIN BOARD] (Conductor side)
TRAVERSE Check
This check is to be done when the optical pick-up block is replaced.
Check Procedure:
1.
Connect the oscilloscope to test point TP (VC) and TP (TE) on
MAIN board.  Insert disk (YEDS-18) .
2.
Put the set into test mode.
3.
Optical pick-up setting to the center by > or . button
pushing.
4.
Press u button.
5.
Check that the oscilloscope traverse waveform is symmetrical,
as shown in the figure below.
6.
Release test mode after adjustment is completed.
[MAIN BOARD] (Conductor side)
VOLT/DIV : 0.2V
TIME/DIV : 500ns
1.1Vp-p – 1.3Vp-p
— 3 —
— 4 —
— 5 —
— 6 —
SECTION 2
DIAGRAMS
2-1. BLOCK DIAGRAM
VOLT/DIV : 0.1V
TIME/DIV  : 1ms
1.0V-2.0V
 TP
(VC)
 TP
(FE)
 TP
(RF)
 TP
(TE)
+
Oscilloscope
(DC range)
TP (VC)
TP (TE)
TP (FE)
 TP
(VC)
 TP
(FE)
 TP
(RF)
 TP
(TE)
+
Oscilloscope
(DC range)
TP (VC)
TP (RF)
VOLTAGE
SELECTION
BOARD
E,EA,SP MODELS
AEP, IT, CET MODELS
CNB907
3
MONO ST
BOARD
AEP, IT , CET MODEL
RFO
OPTICAL PICK-UP
BLOCK
(KSM-880DAA)
5
7
6
4
8
3
10
12
14
15
13
16
CNB701
3
4
1
2
5
6
CNP702
1-4
5-18
CNP801
CNJ804
LCD BOARD
CONTROL BOARD
1
11
12
14
13
15
16
27 SSTP
5 A
6 B
8 D
7 C
10
11
3
4
12
24
30 TFDR
20
14 XLON
23
31 TRDR
5
32 FFDR
6
33 FRDR
2
28 SFDR
3
29 SRDR
25
26 MDP
MUTE
16
51 RFAC
FE 14
3
FE
30
1
RST
SENS 8
5
SENS
SCOR 20
1
SCOR
SCLK 9
6
SCLK
SQCK 2
7
SQCK
SQSO 1
8
SQSO
XRST 3
9
XRST
CLOK 7
10 CLOCK
XLAT 6
11 LATCH
DATA 5
12 DATA
13 AGCCONT
TE 13
LD ON 22
41 TE
40 SE
AGCCONT 20
67
66
X701
16.9344MHz
IC702
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
LOUT1 72
LOUT2 75
IC801
LCD DRIVE
SYSTEM CONTROL
IC802
RESET
14
REC
3
MUTE
2
DOOR
CNP803
22
KEY-1
KEY
SWITCH
S803-806
23
KEY-2
KEY
SWITCH
S801,802
41
38
55
42
XTAI
XTAO
31
32
X801
4MHz
XTAL
EXTAL
RF AMP
1
3
5
CONT
VM
VOUT
IC401
POWER CONTROL
VOLTAGE
CONTROL
Q402
VOLTAGE
CONTROL
Q405
(LOADING)
• Abbreviation
EA
: Saudi Arabia model.
SP
: Singapore model.
IT
: Italian model.
CET
: East European and Russian model.
Page of 22
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Here you can read online and download Sony CFD-V77S (serv.man2) Service Manual in PDF. CFD-V77S (serv.man2) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CFD-V77S (serv.man2) Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.