Sharp CD-ES700 User manual

CD-ES700/CD-ES77
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. S5428CDES700/
SHARP CORPORATION
CONTENTS
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications ................................................. 1-1
[2] Names of parts............................................... 1-2
CHAPTER 2. ADJUSTMENTS
[1] Mechanism section ........................................ 2-1
[2] Tuner section ................................................. 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] Notes on schematic diagram.......................... 5-1
[2] Types of transistor and LED........................... 5-1
[3] Waveforms of CD circuit ................................ 5-2
[4] Voltage ........................................................... 5-3
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Wiring side of PWB........................................6-1
[2] Schematic diagram........................................6-7
CHAPTER 7. FLOWCHART
[1] Troubleshooting .............................................7-1
CHAPTER 8. OTHERS
[1] Function table of IC .......................................8-1
[2] FL Display.................................................... 8-11
Parts Guide
MINI COMPONENT SYSTEM
CD-ES700
MODEL
CD-ES77
MODEL
CD-ES700 Mini Component System consisting of CD-ES700
(main unit) and CP-ES700 (speaker system).
CD-ES77 Mini Component System consisting of
CD-ES77 (main unit) and CP-ES77 (speaker sys-
tem).

CD-ES700/CD-ES77
– i –
IMPORTANT SERVICE NOTES
BEFORE RETURNING THE AUDIO PRODUCT
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the following
safety 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 metal
parts 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 in
the 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 parts
and 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 to
measure the AC voltage drop across the resistor (See diagram).
* Connect the resistor connection to all exposed metal parts having a
return path to the chassis (antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) or
more is excessive and indicates a potential shock hazard which must
be 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

CD-ES700/CD-ES77
1 – 1
CD-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
General
Amplifier
CD player
Tuner
Cassette deck
Power source AC 120 V, 60 Hz
Power consump-
tion
135 W
Dimensions Width: 10-1/4" (260 mm)
Height: 13" (330 mm)
Depth: 12-7/8" (326 mm)
Weight 18.5 lbs. (8.4 kg)
Output power 150 watts minimum RMS per channel into 6
ohms from 100 Hz to 20 kHz, 10% total har-
monic 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 ohms
Game/Video: 1Vp-p
Type 5-disc multi-play compact disc player
Signal readout Non-contact, 3-beam semiconductor laser
pickup
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 MHz
AM: 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 system
with passive radiator
Super tweeter x 2
2" (5 cm) tweeter x 1
6-1/2" (16 cm) woofer x 1
4" (10 cm) passive radiator
Maximum input
power
300 W
Rated input power 150 W
Impedance 6 ohms
Dimensions Width: 10-7/8" (277 mm)
Height: 13" (330 mm)
Depth: 11" (279 mm)
Weight 8.6 lbs. (3.9 kg)/each
Specifications for this model are subject to change without
prior notice.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
CD-ES700/CD-ES77
CP-ES700/CP-ES77

CD-ES700/CD-ES77
1 – 2
[2] Names of parts
Front panel
1. Disc Trays
2. Timer Indicator
3. Power On/Stand-by Button
4. CD Track Up or Fast Forward, Tape 2 Fast Forward,
Tuner Preset Up, Time Up Button
5. Clock/Timer Button
6. Tuning Up Button
7. Tuning Down Button
8. CD Track Down or Fast Reverse, Tape 2 Rewind,
Tuner Preset Down, Time Down Button
9. Equalizer Mode Select Button
10. Tape 1 Cassette Compartment
11. Headphone Jack
12. Game/Video Input Jacks
13. Disc Number Select Buttons
14. CD Direct Play Button
15. Disc Tray Open/Close Button
16. CD Play or Repeat, Tape Play Button
17. Memory/Set Button
18. Tape 2 Record Pause Button
19. CD or Tape Stop Button
20. Extra Bass/Demo Mode Button
21. Volume Control
22. Tape 2 Cassette Compartment
23. Tuner (Band) Button
24. CD Button
25. Tape (1 2) Button
26. Game/Video Button
1
13
15
21
16
17
19
20
3
2
5
6
7
22
14
18
11
8
12
4
9
10
24 25 2623
Display
1. Disc Number Indicators
2. CD Play Indicator
3. CD Pause Indicator
4. Memory Indicator
5. CD Repeat Play Indicator
6. CD Indicator
7. Extra Bass Indicator
8. Tape Play Indicator
9. FM Stereo Mode Indicator
10. Daily Timer Indicator
11. FM Stereo Receiving Indicator
12. Tape 2 Record Indicator
13. Sleep Indicator
14. Timer Play Indicator
15. Timer Recording Indicator
Rear panel
1. Cooling Fan
2. AC Power Cord
3. FM 75 Ohms Antenna Terminal
4. FM Antenna Ground Terminal
5. AM Loop Aerial Jack
6. Video Output Jack
7. Speaker Terminals
1
5
3
6
4
7
8
76321 4 5
13 14 15
109
12
2
11
CD-ES700/CD-ES77

CD-ES700/CD-ES77
1 – 3
Remote control
1. Remote Control Transmitter
2. Disc Number Select Buttons
3. Disc Direct Search Buttons
4. CD Clear/Dimmer Button
5. Memory/Set Button
6. CD Track Down or Fast Reverse, Tape 2 Rewind,
Tuner Preset Down, Time Down Button
7. CD Pause Button
8. Tape 2 Record Pause Button
9. Tuner (Band) Button
10. CD Button
11. Tape (1 2) Button
12. Game/Video Button
13. Power On/Stand-by Button
14. Clock/Timer Button
15. CD Random Button
16. CD Track Up or Fast Forward, Tape 2 Fast Forward,
Tuner Preset Up, Time Up Button
17. CD or Tape Stop Button
18. CD Play or Repeat, Tape Play Button
19. Extra Bass Button
20. Equalizer Mode Select Button
21. Volume Up and Down Buttons
1
2
3
5
13
14
19
18
7
8
4
6
10
11
12
20
21
17
16
15
9
1. Tweeter
2. Passive Radiator
3. Woofer
4. Super Tweeters
5. Speaker Wire
1
2
35
4
CP-ES700/CP-ES77

CD-ES700/CD-ES77
2 – 1
CD-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE
CHAPTER 2. ADJUSTMENTS
[1] Mechanism section
• Driving Force Check
• Torque Check
• Tape Speed
Figure 1
[2] Tuner section
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
•FMRF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
•FMIF
Signal generator: 10.7 MHz, FM modulated
Figure 2 Adjustment Points
Torque Meter Specified Value
Play: TW-2111 Tape 1: Over 80 g
Tape 2: Over 80 g
Torque Meter Specified Value
Tape 1 Tape 2
Play: TW-2111 30 to 80 g.cm 30 to 80 g.cm
Fast 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 Hz
Speaker
Speaker Ter-
minal (Load
resistance: 6
ohms)
Test Stage Frequency Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
AM IF 450 kHz 1,720 kHz T351 *1
AM Band
Coverage
— 530 kHz (fL): T306
1.1 ±0.1 V
*2
AM
Tracking
990 kHz 990 kHz (fL): T303 *1
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
TAPE MECHANISM
Tape
Motor
Variable Resistor in motor
Test
Stage
Frequency Frequency
Display
Setting/
Adjusting
Point
Instrument
Connection
FM Band
Coverage
— 87.50 MHz T301 (fL):
1.3 V ±0.1 V
*1
FM RF 98.00 MHz
(10-30 dB)
98.00 MHz L312 *2
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
Test
Stage
Frequency Frequency
Display
Setting/Adjust-
ing Point
Instrument
Connection
IF 10.7 MHz 98 MHz T302 (Turn the
core of trans-
former T302
fully counter
clockwise)
*1
*1. Input: Antenna Output: TP302
AM IF
FM RF
TP301
TP302
FM IF
T301
T302
R356
R381
T303
T306
IC301
L312
T351
CNP301
AM/FM LOOP ANTENNA
FM BAND
COVERAGE fL
AM BAND
COVERAGE fL
AM TRACKING
fL
MAIN PWB
1

CD-ES700/CD-ES77
2 – 2
[3] TEST MODE
•Setting the test mode
During stand-by mode, press ON/STAND-BY button while pressing
down the button and X-BASS/DEMO button. then, press the CD
button to enter 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 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 memory
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF

CD-ES700/CD-ES77
2 – 3
Sliding the PICKUP with<< >>, << >> button must only be
in STOP 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 memory
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF
A

CD-ES700/CD-ES77
2 – 4
[4] CD section
CD 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 been
detected 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 when
error had been detected for the 5 th times.
Speaker abnormal detection and +B PROTECTION display
In case speaker abnormal detection or +B PROTECTION had
occurred, it can be check by pressing 'POWER', ' ' and 'X-BASS'
button. MicroComputer version number will displayed as "U*****".
Press ‘VIDEO/AUX’ button during version number display and then
press ‘POWER’, ‘MEMORY/SET’ and ‘VIDEO/GAME’ button. Display
will show "S** B**". S is referring to speaker abnormal detection and B
is referring to +B PROTECTION. ** is in hex valve.
+B PROTECTION is condition when irregular process occur on power
supply line.
BEFORE TRANSPORTING THE UNIT
The following process need to be taken after set tapering/parts
replacement.
1. Press the ON/STAND-BY button to enter stand-by mode.
2. While pressing down the button and the X-BASS/DEMO but-
ton, press the ON/STAND-BY button. The Micro Computer version
number will be displayed as "U*****".
3. Press OPEN/CLOSE button until "WAIT"→"FINISHED" appears.
4. Unplug the AC cord and the unit is ready for transporting.
Error Explanation
01 When Pickup set inner position, inner switch cannot detect
'ON' level for 10 secs.
10* 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 Notes
CD Pickup Mechanism Error. 'ER-CD01' PU-IN SW Detection NG.
CD Changer Mechanism Error. 'ER-CD**' (*) 10: CAM SW Detection NG during normal operation
11: CAM SW Detection NG during initialize process
20:TRAY SW Detection NG during normal operation
21: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.
F
M 87.5 MH
z

CD-ES700/CD-ES77
2 – 5
[5] 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-ES700/CD-ES77
2 – 6
139
2
APPLY SANKOL BEFORE FIX
FIX ITEM 1 ACCORDING TO THE
SHOWN PICTURE ABOVE
ROTATE MODE BIG GEAR UNTIL REACH AS SHOWN IN PICTURE

CD-ES700/CD-ES77
2 – 7
APPLY GREASE
PULL THE LEVER UNITIL
REACH THE ARROW MARK
143
112
3

CD-ES700/CD-ES77
2 – 8
FIGURE 1
FIGURE 2
APPLY GREASE SLOT CLAMP SW ARM INSIDE BASE SLOT
152
142
118
4

CD-ES700/CD-ES77
2 – 9
127
128
5
APPLY GREASE AT BOTTOM SIDE
OF GEAR FOLLOW MARKING
NO NEED APPLY GREASE AT BOTTOM
SIDE
O.K
BLACK MARK
FIGURE 1
N.G
OTHER THAN FIGURE 1 DIRECTION ALL N.G
APPLY GREASE AT
TOP SIDE OF GEAR
FOLLOW MARKING

CD-ES700/CD-ES77
2 – 10
APPLY GREASE AT
HALF GEAR AREA
ROTATE CLOCKWISE UNTIL REACH HERE (MAXIMUM)
6
129

CD-ES700/CD-ES77
2 – 11
CHANGE COLOR TO BLACK
150151148
7

CD-ES700/CD-ES77
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-ES700/CD-ES77
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-ES700/CD-ES77
2 – 14
10
148 147 146 145

CD-ES700/CD-ES77
2 – 15
APPLY GREASE
WHEN FIXING ITEM 2 MUST FOLLOW AS SHOWN
121
144
130
11