Sharp CD Es777
Transcript of Sharp CD Es777
CD-ES777
SERVICE MANUAL
In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
No. S1602CDES777/
CONTENTS
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones formaintaining the safety and performance of the set.
!
This document has been published to be usedfor after sales service only.The contents are subject to change without notice.
PRECAUTIONS FOR USING LEAD FREE SOLDERCHAPTER 1. GENERAL DESCRIPTION[1] Important service notes ................................ 1-1[2] Specifications ................................................. 1-2[3] Names of parts............................................... 1-3
CHAPTER 2. ADJUSTMENTS[1] Mechanism section ........................................ 2-1[2] Test mode....................................................... 2-1[3] CD section...................................................... 2-4[4] CD Changer mechanism section ................... 2-5
CHAPTER 3. MECHANISM BLOCKS[1] Caution on disassembly ................................. 3-1[2] Removing and reinstalling the main parts ........ 3-4
CHAPTER 4. DIAGRAMS[1] CD Block diagrams ........................................ 4-1[2] Main Block diagrams...................................... 4-2
CHAPTER 5. CIRCUIT DESCRIPTION[1] Waveforms of CD circuit ................................ 5-1[2] Voltage ........................................................... 5-2
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTSLAYOUT[1] Notes on schematic diagram .........................6-1[2] Types of transistor and LED ..........................6-1[3] Schematic diagram........................................6-2[4] Wiring side of PWB......................................6-10
CHAPTER 7. FLOWCHART[1] Troubleshooting .............................................7-1
CHAPTER 8. OTHERS[1] Function table of IC .......................................8-1[2] FL Display......................................................8-8
Parts Guide
MINI COMPONENT SYSTEM
CD-ES777MODELCD-ES777 Mini Component System consisting of CD-ES777(main unit) and CP-ES777 (speaker system).
CD-ES777
– i –
AudioXL-MP150Service ManualXLMP150MarketEPRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
Indicates lead-free solder of tin, silver and copper.
2. Using lead-free wire solderWhen fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire soldermay cause damage or accident due to cracks.As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use adedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service stationor service branch in your area.
3. SolderingAs the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C,and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period oftime. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded,remove the bit from the PWB as soon as you confirm the steady soldering condition.Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn on and off thepower of the bit as required.If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every useof it.When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
Ref No. DescriptionParts No.
PWB-A 92LPWB6505MANS
92LPWB6274LEDS
PWB-C
PWB-D
MAIN (A1), POWER (A2)
PWB-B 92LPWB6505DPLS
92LPWB6505CDUS
DISPLAY (B1), JACK (B2)
CD
LED
QPWBF0027AWZZ
QPWBF1055AWZZ
PWB-E
PWB-F
CD MOTOR (PWB ONLY)
CD CHANGER MOTOR (PWB ONLY)
"MAIN,DISPLAY,POWER,JACK,CD,CD MOTOR(PWB ONLY),CD CHANGER MOTOR (PWB ONLY),LED PWB" of this model employs lead-free solder.The LF symbol indicates lead-free solder, and is attached on the PWB and service manuals. The alphabetical characterfollowing LF shows the type of lead-free solder.
CD-ES777
[1] Important service notes
BEFORE RETURNING THE AUDIO PRODUCTBEFORE RETURNING THE AUDIO PRODUCT(Fire & Shock Hazard)Before returning the audio product to the user, perform the followingsafety checks.1. Inspect all lead dress to make certain that leads are not pinched or
that hardware is not lodged between the chassis and other metalparts in the audio product.
2. Inspect all protective devices such as insulating materials, cabinet,terminal board, adjustment and compartment covers or shields,mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage current inthe following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.* Using two clip leads, connect a 1.5 kohm, 10 watt resistor paralleled
by a 0.15 µF capacitor in series with all exposed metal cabinet partsand a known earth ground, such as conduit or electrical ground con-nected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity tomeasure the AC voltage drop across the resistor (See diagram).
* Connect the resistor connection to all exposed metal parts having areturn path to the chassis (antenna, metal cabinet, screw heads,knobs and control shafts, escutcheon, etc.) and measure the ACvoltage drop across the resistor.
All check must be repeated with the AC line cord plug connectionreversed.Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) ormore is excessive and indicates a potential shock hazard which mustbe corrected before returning the audio product to the owner.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 mF
1.5 kohms
10 W
VTVM
AC SCALE
1 – 1
CHAPTER 1: GENERAL DESCRIPTION
CD-ES777
– 3
[2] Specifications
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
As part of our policy of continuous improvement, SHARP reservesthe right to make design and specifcation changes for productimprovement without prior notice. The performance specifcationfigures indicated are nominal values of production units .There maybe some deviations from these values in individual units.
ˇ General
ˇ Amplifier
ˇ CD player
ˇ Tuner
ˇ Cassette deck
ˇ Speaker
Power source AC 120 V, 60 Hz
Power consumption 135 W
Dimensions Width: 10-1/4" (260 mm)Height: 13" (330 mm)Depth: 12-7/8" (322 mm)
Weight 17 lbs. (7.7 kg)
Output power 150 watts minimum RMS per channel into6 ohms from 100 Hz to 20 kHz, 10% totalharmonic distortion
Output terminals Speakers: 6 ohms
Headphones: 16 - 50 ohms(recommended: 32 ohms)
Video output: 1Vp-p
Input terminals Game/Auxiliary (audio signal):500 mV/47 k ohmsGame/Video: 1Vp-p
Type 5-disc multi-play compact disc player
Signal readout Non-contact, 3-beam semiconductor laserpickup
D/A converter 1-bit D/A converter
Frequency response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)
Frequency range FM: 87.5 - 108.0 MHzAM: 530 - 1,720 kHz
Frequency response 50 - 14,000 Hz (normal tape)
Signal/noise ratio 55 dB (TAPE-1 playback)50 dB (TAPE-2 recording/playback)
Wow and flutter 0.3 % (WRMS)
Type 3-way type speaker systemSuper tweeter2" (5 cm) tweeter6-5/16" (16 cm) woofer
Maximum inputpower
300 W
Rated input power 150 W
Impedance 6 ohms
Dimensions Width: 7-7/8" (200 mm)Height: 13" (330 mm)Depth: 10-3/8" (264 mm)
Weight 7.9 lbs. (3.6 kg)/each
1 – 2
CD-ES777
–2
[3] Names of parts
Display
1. Disc Number Indicators2. CD Play Indicator3. CD Pause Indicator4.Memory Indicator5. CD Repeat Play Indicator6. CD Indicator7. Extra Bass Indicator8. Tape Play Indicator9. FM Stereo Mode Indicator10. DailyTimer Indicator11. FM Stereo Receiving Indicator12. Tape 2 Record Indicator13. Sleep Indicator14. Timer Play Indicator15. Timer Recording Indicator
Rear panel
1. Cooling Fan2. AC Power Cord3. FM 75 Ohms Antenna Jack4. AM Antenna Ground Terminal5. AM Loop Antenna Terminal6. Speaker Light-Up Jacks7. Video Output Jack8. Speaker Terminals
ı Speaker system
876321 4 5
13 14 15
109 1112
AC INPUT
1. Tweeter2. Super Tweeter3. Woofer4. Bass Reflex Duct5. Speaker Wire6. Speaker Light-Up wire
1
2
3
4
56
Front panel
1. Disc Trays2. Timer Indicator3. Tuner (Band) Button4. CD Button5. Power On/Stand-by Button6. Tape (1 2) Button7.Game/Video Button8. Tape 1 Cassette Compartment9. Headphone Jack10.Game/Video Input Jacks11. Disc Tray Open/Close Button12. Disc Number Select Buttons13. Volume Control14. CD or Tape Stop Button15. CD Play or Repeat, Tape Play Button16. CD Track Up or Fast Forward, Tape 2 Fast Forward,
Tuner Preset Up, Time Up Button17. CD Track Down or Fast Reverse, Tape 2 Rewind,
Tuner Preset Down, Time Down Button18. Tape 2 Cassette Compartment19. Remote Sensor
1 – 3
CD-ES777
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Remote control
1. Remote Control Transmitter2. Disc Number Select Buttons3. Clock/Timer Button4. Disc Direct Search Buttons5. Equalizer Mode Select Button6. Extra Bass/Demo Button7. Volume Up and Down Buttons8. Power On/Stand-by Button9. CD Button10. Tuner (Band) Button11. Tape (1 2) Button12.Game/Video Button13. CD Clear/Dimmer Button14. CD Random Button15. CD Stop Button16. Tape Stop Button17.Memory Button18. CD Pause Button19. CD Play or Repeat Button20. Tape Play Button21. Tape 2 Record Pause Button22. Tuning Up Button23. CD Track Up or Fast Forward, Tape 2 Fast Forward,
Tuner Preset Up, Time Up Button24. CD Track Down or Fast Reverse, Tape 2 Rewind,
Tuner Preset Down, Time Down Button25. Tuning Down Button
1
2
3
5
6
7
4
9
10
8
11
12
17
19
18
13
15
14
21
20
16
2524
22 23
1 – 4
CD-ES777
2 – 1
CHAPTER 2. ADJUSTMENTS
[1] Mechanism section• Driving Force Check
• Torque Check
• Tape Speed
Figure 1
Torque Meter Specified ValuePlay: TW-2111 Tape 1: Over 80 g
Tape 2: Over 80 g
Torque Meter Specified ValueTape 1 Tape 2
Play: TW-2111 30 to 80 g.cm 30 to 80 g.cmFast forward: TW-2231 — 70 to 180 g.cm
— 70 to 180 g.cm
Test Tape Adjust-ing Point
Specified Value
Instrument Connection
Normal speed
MTT-111 Variable Resistor in motor.
3,000 ± 30 HzSpeaker
Speaker Ter-minal (Load resistance: 6 ohms)
TAPE MECHANISM
Tape
Motor
Variable Resistor in motor
CD-ES777
2 – 2
[2] Test mode• Setting the test mode
During stand-by mode, press GAME/VIDEO button while pressing
down the button and button. then, press the CD button toenter the test mode.
IL isn’t done
OPEN/CLOSE operation is using manual. IL isn’t done
<< >>,<< >>buttons make pick's slide possible. IL isn’t done
to page 2-3<<PLAY>> key input.
C D T E S T
A
Do TOC IL. Do normal play.When these following key is input into PLAY key, track num-ber can be appoint directly.
<<MEMORY>>key input.
<< 1>> key: Track 4
<< 2>> key: Track 9
<< 3>> key: Track 15
Adjustment result automatically willdisplay as below for each 2 sec:a) "FOF_XXXX"b) "TOF_XXXX"c) "TBAL_XX"d) "TGAN_XX"f) "FGAN_XX"g) "RFLS_XX"
––––––––
<<STOP>> key input.
STOP
explanation:a) Focus off set = "FOF_XXXX"b)Tracking off set = "TOF_XXXX"c)Tracking balance = "TBAL_XX"d)Tracking Gain = "TGAN_XX"f) Focus Gain = "FGAN_XX"g) RF level shift = "RFLS_XX"VOL — Last memoryP.GEQ — FLATX-BASS — OFFTo cancel : Power OFF
CD-ES777
2 – 3
Sliding the PICKUP with<< >>, << >> button must only be inSTOP mode.
<<MEMORY>> key input.
Laser ON.
<<MEMORY>> key input.
Tracking OFF play at that specific point.
<<MEMORY>> key input.
Tracking ON play from that specific point.
<<MEMORY>> key input.
Adjustment result automatically will display as below for each 2 sec :a) "FOF_XXXX"b) "TOF_XXXX"c) "TBAL_XX"d) "TGAN_XX"f) "FGAN_XX"g) "RFLS_XX"
<<STOP>> key input.
STOP
explanation:a) Focus off set = "FOF_XXXX"b)Tracking off set = "TOF_XXXX"c)Tracking balance = "TBAL_XX"d)Tracking Gain = "TGAN_XX"f) Focus Gain = "FGAN_XX"g) RF level shift = "RFLS_XX"VOL — Last memoryP.GEQ — FLATX-BASS — OFFTo cancel : Power OFF
A
CD-ES777
2 – 4
[3] CD sectionCD Error code description
* 'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of 'ER-CD**'. 'ER-CD**' display will only be displayed when error had beendetected for the 5th times.
Standard Specification of Stereo System Error Message Display Contents
(*) CHECKING:
If CD changer mechanism error is detected, 'CHECKING' will be dis-play instead of 'ER-CD**'. 'ER-CD**' display will only be display whenerror had been detected for the 5th times.
Speaker abnormal detection and +B PROTECTION display
In case speaker abnormal detection or +B PROTECTION hadoccurred, the unit will automatically enter to stand - by mode and Timerindicator will be flashing as below.
+B PROTECTION is condition when irregular process occur on powersupply line.
BEFORE TRANSPORTING THE UNIT
The following process need to be taken after set tapering/partsreplacement.
1. Press the ON/STAND-BY button to enter stand-by mode.
2. While pressing down the button and the button,press the GAME/VIDEO button. The Micro Computer version num-ber will be displayed as "CT*****".
3. Press button until "WAIT"→ "FINISHED" appears.
4. Unplug the AC cord and the unit is ready for transporting.
Error Explanation10* CAM error. Can't detect CAM switch when CAM is moving.11* When it detect cam operation error during initialize pro-
cess.20* TRAY error. Can't detect TRAY switch when TRAY is mov-
ing.21* When it detect TRAY operation error during initialize pro-
cess.31 When it change to CD function, DSP cannot read initial
data.
Error Contents Display NotesCD CD Changer Mechanism Error. 'ER-CD**' (*) 10: CAM SW Detection NG during normal operation
11: CAM SW Detection NG during initialize process20:TRAY SW Detection NG during normal operation21:TRAY SW Detection NG during initialize process
CD DSP Communication Error. 'ER-CD31' DSP COMMUNICATION ERROR.Focus Not Match/IL Time Over. 'NO DISC'
TUNER PLL Unlock. PLL Unlock.FM 87.5 MHz
FLASHING
1 FRAME
OFF OFF OFF OFF
(REPEAT)
ON
TIMER
LED
ON
NO. 1
NO. 2
NO. 1
NO. 2
NO.1 : +B Protection
NO.2 : Speaker abnormal
FLASHING
Example : In case of speaker abnormal
CD-ES777
2 – 5
[4] CD Changer mechanism section• A number in the drawing sheet is the number of the parts guide
(CHANGER MECHANISM PARTS).
140
141
HALF GEAR
MUST ARRANGE AS SHOWN
1
CD-ES777
2 – 6
2
139
APPLY SANKOL BEFORE FIX
FIX ITEM 1 ACCORDING TO THE
SHOWN PICTURE ABOVE
ROTATE MODE BIG GEAR UNTIL REACH AS SHOWN IN PICTURE
CD-ES777
2 – 7
APPLY GREASE
PULL THE LEVER UNITIL
REACH THE ARROW MARK
143
112
3
CD-ES777
2 – 8
FIGURE 1
FIGURE 2
APPLY GREASE SLOT CLAMP
SW ARM INSIDE BASE SLOTHALF GEAR MUST BE
ARRANGE AS SHOWN
152
142
118
4
CD-ES777
2 – 9
127
128
5
APPLY GREASE AT BOTTOM SIDE
OF GEAR FOLLOW MARKING
NO NEED APPLY GREASE AT BOTTOM
SIDE
O.K
BLACK MARKFIGURE 1
N.G
OTHER THAN FIGURE 1 DIRECTION ALL N.G
APPLY GREASE AT
TOP SIDE OF GEAR
FOLLOW MARKING
CD-ES777
2 – 10
APPLY GREASE AT
HALF GEAR AREA
ROTATE CLOCKWISE UNTIL REACH HERE (MAXIMUM)
6
129
CD-ES777
2 – 11
CHANGE COLOR TO BLACK
151150149
7
CD-ES777
2 – 12
124
131
TRAY BIG GEAR
CHANGE COLOR
TO BLACK
TRAY BIG GEAR
CHANGE COLOR
TO BLACK
GREASE APPLICATION LENGTH
GREASE APPLICATION PORTION
MUST FREE FROM GREASE THE SHOWN AREA
O . K
N . G
SHOWN HOLE MUST FACING ARROW DIRECTION
8
CD-ES777
2 – 13
TR-RE JOINT GEAR C
APPLY GREASE AT
BOTTOM SIDE ONLY
APPLY GREASE ONLY AT TOP SIDE GEAR
MUST FIX ACCORDING TO THE HOLE'S
138 126 125
9
CD-ES777
2 – 14
10
148 147 146 145
CD-ES777
2 – 15
APPLY GREASE
WHEN FIXING ITEM 2 MUST FOLLOW AS SHOWN
121
144130
11
CD-ES777
2 – 16
FIGURE 1
FIGURE 3
FIGURE 2
APPLY GREASE SC141
APPLY GREASE
117
12
CD-ES777
2 – 17
ITEM 2 , 3 MUST APPLY GREASE ON TOP SIDE GEAR ONLY
O . K N . G
TOP VIEW AFTER
ASSY
FIX REVERSE N.G
GEAR 112 GEAR 112
134
133
132
13
CD-ES777
2 – 18
APPLY GREASE BEFORE FIX
MOVE 112 UNTIL TOUCH THE WALL
DURING GEAR A ROTATE
MUST PRESS SHOWN AREA
AND LEVER B WILL MOVE
ARROW DIRECTION THEN
FIX PART 108SCREW TORQUE
A
B
APPLY GREASE
CONFIRM WHETHERFIXEDPROPELY OR NOT
108 803 x6
14
2 kgf-cm+0.5- 0
CD-ES777
2 – 19
APPLY GREASE
BEHIND THE LEVER NEED TO APPLY GREASE
PULL IT THEN LEVER WILL
MOVE IN
113
15
CD-ES777
2 – 20
APPLY GREASE
AT BOSS
APPLY GREASE
APPLY GREASE BEFORE FIX
SPRING MUST ARRANGE UNDER THE HOOK
O.K LR JOINT LEV
LR JOINT LEV
BOARD R
BOARD R
N.G
123
115
16
CD-ES777
2 – 21
APPLY GREASE
ASSY REVERSELY N.G
BIG SLOT MUST FACING OUT
WHEN FIX & AFTER FIX TO BASE CHASSIS
AFTER ASSY CONFIRM THE FREE DROP
GEAR POSITION DURING FIXING
103 137 136
17
CD-ES777
2 – 22
ASSY REVERSELY N.G
WHEN FIX & AFTER FIX TO BASE CHASSIS
AFTER ASSY CONFIRM THE FREE DROP
APPLY GREASE
BIG SLOT MUST FACING OUT
GEAR POSITION DURING FIXING
CONFIRM BOTH GEAR SIT PROPELY & LOCKED
18
104
135
136
CD-ES777
2 – 23
AFTER FIX OUTER UP/DOWN LEVER HOLD SHOWN PORTION AND
MOVE UP/DOWN THEN CONFIRM LEVER GO INSIDE THE HOLE OR NOT
IF NO GO INSIDE HOLE IS N.G
IF GO INSIDE HOLE
IS O.K
19
ALL OF THIS 135 AND 137 GEAR FIX TOGETHER WITH 119
AND 120 LEVER ( MOVE TOGETHER )
BIGGER SLOT FACING OUT
119
135
BIGGER SLOT FACING OUT
120
137
CD-ES777
2 – 24
20
110
BIG SLOT FACING OUT
CD-ES777
4 – 3
Figure 4-3: BLOCK DIAGRAM (3/3)
RL841
PT841SUB POWER
TRANSFORMER
D842~D845
IC854AN78L05
+B5
+B PROTECT
+B6
VL+
VL-
VH-
PT801
MAIN POWER
TRANSFORMER
+B6SW5V D803
IC851AN80T53
VOLTAGE REGULATOR
Q841
D905
AC 120 V, 60 Hz
-VF
VF2
VF1
Q801
+B3
+B7
+B4
+B8
D+5V
+B9 A_+5V
+B1
+B2
-B1
-B2
+B8
+B7
+B4
+B4
R
L
+B5
RX701
JOG701
JOGVOLUME
SENSORREMOTE
D804
D802
D801
RL914
JK692HEADPHONES
RELAYDRIVER
MOTORDRIVER
SPEAKERRELAY
M901FAN MOTOR
SO902SPEAKERTERMINAL
MQ906
Q905
Q709
Q713
Q904
Q901
Q903Q902
D906D907
21
IC901STK41242
POWER AMP.
2A/125VF803
2A/125VF804
5A/125VF805
F801
5A/125V
F8025A/125V
L-OUT
R-OUT
CLK
4.19 MHz
RESET
L-CH
R-CH
AC POWERSUPPLY CORD
REC/PLAY
VLOADRESET
REC/PLAY
T1/T2
BIAS
F1
F1
F2
F2
+B5+B5
+B5
+B5
VDD
VDD
AC_RLY
SP_RLY
VDD
SP. DET.
-
CE
DI
DO
XL701
-
BIAS
T1/T2
AVDD
PHOTO
SW725-SW725SW711-SW716SW701-SW707
KEY
SECTIONTO CD
T.F.
FL DISPLAYFL701
454432 411 2 215
79
80
83
38
37
34
31
33
29
76
117
8
256
VH+
1
3
3
7
2
6
1
1
14
18
84
1 2 4 5 3
1
2
3
100
11 1210 15 16 21 24 20 17 18 19
46 46 30
39
3128
4813254027
--
CONSTANTVOLTAGE REGULATOR
LD+8V
M+13V
A+10V
+5V
IC901
- --
78 69-
LED703
IC701IXA002AW
(SERAIL No.31200001~402xxxxx)IXA020AW
(SERAIL No.402xxxxx~)SYSTEM
MICROCOMPUTER
CD-ES777
5 – 1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Waveforms of CD circuit
T
FDO
TDO
Stopped
CH1=500 mV
DC 10:1
CH3=500 mV
DC 10:1
500 ms/div(500 ms/div)
NORM:20 kS/s
1
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.000 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH1
v/DIV
500 mV
1 IC1 21
2 IC1 22
T
FDO
DRF
TE
Stopped
CH1=500 mV
DC 10:1
CH2=10 V
DC 10:1
CH3=1 V
DC 10:1
500 ms/div(500 ms/div)
NORM:20 kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
-3 div -1 div 0 div +1 div +3 div
CH Position To
CH2
Position
0.20 div
1 IC1 21
3 IC1 68
4 IC1 17
Vp-p=1.0 V~1.3 V
0.5 mV/div,0.5 µsec/div
5 IC1 4
T
T
TE
DRF
Stopped
CH1=10 V
DC 10:1
CH2=1 V
DC 10:1
100 ms/div(100 ms/div)
NORM:100 kS/s
2
1
=Record Length=
Smoothing : ON CH1 : 0.0 V
CH2 : 0.00 V
Main : 100 K
Zoom : 2 K
Mode : NORMAL
Type : EDGE CH1
Delay : 2.924 ms
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
3 IC1 68
4 IC1 17
T
T
FDO
SPDO
Stopped
CH1=200 mV
DC 10:1
CH2=500 mV
DC 10:1
500 ms/div
1999/04/07 09:51:15
(500 ms/div)
NORM:20 kS/s
2
1
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.000 V
Main : 100 K
Zoom : 2 K
Mode : NORMAL
Type : EDGE CH2
Delay : 2.924 ms
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
1 IC1 21
6 IC1 24
T
FDO
PDO2
PDO1
Stopped
CH1=500 mV
DC 10:1
CH3=1 V
DC 10:1
CH4=1 V
DC 10:1
500 ms/div(500 ms/div)
NORM:20 kS/s
1
4
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH2
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH1
v/DIV
500 mV
1999/04/05 17:33:17
1 IC1 21
7 IC1 76
8 IC1 77
T
T
DOUT
Stopped
CH1=2 V
DC 10:1
500 ns/div
1999/04/07 09:25:28
(500 ns/div)
NORM:200 MS/s
1
=Record Length=
Smoothing : ON CH1 : 0.00 V
CH2 : 0.00 V
Main : 1 K
Zoom : 100
Mode : NORMAL
Type : EDGE CH1
Delay : 2.887 ms
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
9 IC1 39
T
T
DATA
DATACK
LRSY
Stopped
CH1=2 V
DC 10:1
CH2=2 V
DC 10:1
CH3=2 V
DC 10:1
5 µs/div(5 µs/div)
NORM:100 kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.00 V
CH2 : 0.00 V
Main : 5 K
Zoom : 100
Mode : AUTO
Type : EDGE CH3
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH3
v/DIV
2 V
1999/04/05 20:50:17
10 IC1 57
IC1 58
IC1 59
11
12
CD-ES777
5 – 2
[2] Voltage
PIN PIN VOLTAGE PIN PIN PIN PIN
NO NO NO NO NO NO
1 5.02 51 0 1 0 1 3.2 51 0 1 2.1
2 5.01 52 4.71 2 0 2 1.61 52 0 2 2.2
3 5.01 53 4.64 3 0 3 1.61 53 0 3 2.1
4 5.01 54 4.64 4 4.98 4 1.6 54 0 4 2.2
5 1.81 55 4.61 5 4.95 5 1.61 55 0 5 2.1
6 5.01 56 4.65 6 4.96 6 3.06 56 0 6 2.2
7 5.01 57 N/U 7 4.99 7 1.65 57 0 7 0
8 0 58 N/U 8 4.96 8 1.65 58 0 8 4.37
9 4.92 59 N/U 9 4.96 9 1.65 59 0 9 5.02
10 4.93 60 N/U 10 4.99 10 1.65 60 3.2 10 3.2
11 4.93 61 N/U 11 4.96 11 1.48 61 0 11 1.62
12 0 62 N/U 12 4.96 12 0 62 0 12 1.65
13 4.93 63 N/U 13 4.96 13 1.65 63 0.53 13 1.62
14 0 64 N/U 14 4.96 14 0 64 0 14 1.65
15 0 65 N/U 15 4.96 15 1.65 65 5.18 15 1.62
16 0 66 N/U 16 4.96 16 1.47 66 5.18 16 0
17 2.82 67 N/U 17 4.99 17 1.48 67 4.68 17 1.62
18 4.77 68 -28.55 18 4.96 18 0 68 0 18 1.64
19 0 69 -28.55 19 4.96 19 0 69 0 19 4.71
20 0 70 -28.61 20 4.96 20 0 70 0 20 4.71
21 0 71 -28.64 21 4.96 21 1.6 71 0 21 3.92
22 4.77 72 -28.64 22 4.98 22 0 72 0 22 3.11
23 4.73 73 -17.02 23 9.95 23 1.61 73 0 23 3.1
24 1.8 74 -28.62 24 0 24 1.61 74 4.68 24 2.5
25 4.92 75 -25.59 25 0 75 4.68 25 1.65
26 4.92 76 -17.18 26 0 76 3.01 26 0
27 4.88 77 -25.61 PIN 27 3.2 77 0 27 5.02
28 0 78 -22.64 NO 28 0 78 1.12 28 8.68
29 0 79 4.76 1 58.3 29 3.2 79 0 29 5.02
30 0 80 -28.77 2 24.85 30 0 80 3.2 30 0.69
31 4.92 81 -19.89 3 12.79 31 0 31 0.71
32 4.93 82 -20.07 4 -12.85 32 1.59 32 0
33 4.93 83 -14.14 5 -24.75 33 1.6 PIN VOLTAGE 33 0
34 4.92 84 -25.78 6 -58.9 34 3.2 NO 34 0
35 3.76 85 -25.62 7 0 35 0 1 0 35 2.11
36 4.93 86 -22.96 8 0 36 0 2 0 36 2.2
37 12.78 87 -19.9 9 0 37 0 3 0
38 12.78 88 -20.09 10 0 38 0 4 2
39 12.78 89 -25.63 11 0 39 0 5 2
40 0 90 -23.18 12 -57.4 40 0 6 1.32 PIN VOLTAGE
41 4.78 91 -23.01 13 57.6 41 3.61 7 0 NO
42 4.81 92 -22.79 14 0 42 0 8 0.6 1 2.55
43 4.71 93 -22.82 15 0 43 0 9 3.48 2 2.55
44 0 94 -22.96 16 -56.01 44 1.8 10 3.44 3 2.55
45 4.77 95 -22.76 17 0 45 3.8 11 0 4 0
46 0 96 -22.74 18 0 46 0 12 0 5 2.49
47 0 97 -22.57 47 1.45 13 6.9 6 2.69
48 0 98 -22.55 48 1.49 14 4.18 7 1.34
49 4.76 99 -22.58 PIN 49 3.19 15 0 8 12.66
50 -0.59 100 -22.34 NO 50 3.79 16 3.45
1 5.06 17 0.6
2 12.83 18 0
3 19.6 19 2.59
4 0 20 2
5 18.28 21 2
6 9.92 22 0
7 8.4 23 0
24 0
IC 851
VOLTAGE
IC 503
IC 901
VOLTAGE
IC101
IC2
VOLTAGE VOLTAGE
IC1IC 601
VOLTAGEVOLTAGE
IC701
VOLTAGE
CD-ES777
5 – 3
CD-ES777
6 – 1
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Notes on schematic diagram• Resistor:
To differentiate the units of resistors, such symbol as K and M areused: the symbol K means 1000 ohm and the symbol M means1000 kohm and the resistor without any symbol is ohm-type resis-tor. Besides, the one with “Fusible” is a fuse type.
• Capacitor:To indicate the unit of capacitor, a symbol P is used: this symbol Pmeans pico-farad and the unit of the capacitor without such a sym-bol is microfarad. As to electrolytic capacitor, the expression“capacitance/withstand voltage” is used.(CH), (TH), (RH), (UJ): Temperature compensation(ML): Mylar type(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this modelare subject to change for improvement without prior notice.
• The indicated voltage in each section is the one measured by Digi-tal Multimeter between such a section and the chassis with no sig-nal given.
1. In the tuner section, indicates AM indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back. ( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with “ “ ( ) are important for main-taining the safety of the set. Be sure to replace these parts withspecified ones for maintaining the safety and performance of theset.
[2] Types of transistor and LED
REF. NO DESCRIPTION POSITIONJOG701 VOLUME MAX—MINSW701 POWER ON /STAND-BY ON—OFFSW702 CD ON—OFFSW703 TUNER (BAND) ON—OFFSW704 AUX ON—OFFSW705 TAPE ON—OFFSW707 PLAY ON—OFFSW708 FAST FORWARD/PRESET UP ON—OFFSW709 FAST REWIND/PRESET DOWN ON—OFFSW710 STOP ON—OFFSW711 DISC 1 ON—OFFSW712 DISC 2 ON—OFFSW713 DISC 3 ON—OFF
SW711 DISC 1 ON—OFFSW712 DISC 2 ON—OFFSW713 DISC 3 ON—OFFSW724 DISC 4 ON—OFFSW725 DISC 5 ON—OFFSW726 OPEN/CLOSE ON—OFF
REF. NO DESCRIPTION POSITION
KRA107 SKRC102 SKRC104 SKTA1504 YKTC3875 GR
B(3)
E(1)
C(2)
TOPVIEW
KDS184KDS160
TOP VIEW
TOP VIEW
KTA1271 YKTA1273 YKTA1274 Y
VIEWFRONT
E C B(S)(G)(D)(1)(2)(3) 1N404S
1N4148H
D1SS119
DRL204F
TS10B05G
AC AC
VIEWFRONT
FRONTVIEW
SDPB50CDSLR342VCSDPB40F2
KTC3194 YKTC3199 GRKTC3200 GRKTC3203 YKTC3205 Y