Sony D-E808 User manual

MICROFILM
SERVICE MANUAL
COMPACT DISC COMPACT PLAYER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
D-E885
Tourist Model
D-E808
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW (This output
is the value measured at a distance of 200
mm from the objective lens surface on the
optical pick-up block with 7 mm aperture.)
Error correction
Sony Super Strategy Cross Interleave Reed
Solomon Code
D-A conversion
1-bit quartz time-axis control
Frequency response
20 - 20,000 Hz +1
–2 dB (measured by EIAJ CP-
307)
Output (at 4.5 V input level)
Headphones (stereo minijack)
15 mW + 15 mW at 16 ohms
Line output (stereo minijack)
Output level 0.7 V rms at 47 kilohms
Recommended load impedance over 10
kilohms
Optical digital output (optical output
connector)
Output level: –21 to –15 dBm
Wavelength: 630 – 690 nm at peak level
General
Power requirements
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
• Two Sony NH-DM2AA rechargeable
batteries: 2.4 V DC
Two Sony NC-DMAA rechargeable
batteries: 2.4 V DC
• Two LR6 (size AA) batteries: 3 V DC
• AC power adaptor (DC IN 4.5 V jack):
US/Canadian model: 120 V, 60 Hz
AEP/E13 model: 220 – 230 V, 50/60 Hz
UK model: 230 – 240 V, 50Hz
Australian model: 240 V, 50 Hz
Tourist/E33 model: 100 – 240 V, 50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Chinese model: 220 V, 50 Hz
• Sony DCC-E245 car battery cord for use on
car battery: 4.5 V DC
Dimensions (w/h/d) (without projecting
parts and controls)
Approx. 131.8 ×24.2 ×142.0 mm
(51/4×31/32 ×55/8in.)
Mass (without rechargeable batteries)
Approx. 210 g (7.4 oz)
Operating temperature
5 ˚C – 35 ˚C (41 ˚F – 95 ˚F)
SPECIFICATIONS
D-E808/E885
Model Name Using Similar Mechanism D-E800/E805
CD Mechanism Type CDM-2911EBA
Optical Pick-Up Name DAX-11E
Supplied accessories
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
AC power adaptor (1)
Headphones with remote control (1)*1
Earphones with remote control (1)*2
Rechargeable batteries (2)
AC plug adaptor (1)*3
Battery carrying case (1)
Carrying case (1)
*1Supplied with US model
*2Not supplied with US model
*3Supplied with Tourist, E33 and E13 models
Design and specifications are subject to change
without notice.
• Abbreviation
E13: 220 – 230 V AC area in E model
E33: 100 – 240 V AC area in E model
Ver 1.1 1999. 02

– 2 –
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
TABLE OF CONTENTS
1. SERVICING NOTES............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY ......................................................... 8
4. SERVICE MODE...................................................... 9
5. ELECTRICAL ADJUSTMENTS......................... 10
6. DIAGRAMS
6-1. Block Diagram – MAIN Section – ................................. 15
6-2. Block Diagram – POWER SUPPLY Section – .............. 19
6-3. IC Pin Function Description ........................................... 21
6-4. Printed Wiring Boards (Suffix-11) ................................. 24
6-5. Schematic Diagram (Suffix-11)...................................... 27
6-6. Schematic Diagram (Suffix-12)...................................... 31
6-7. Printed Wiring Board (Suffix-12) ................................... 35
7. EXPLODED VIEWS ................................................ 43
8. ELECTRICAL PARTS LIST ............................... 46
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED
LINE WITH MARK !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 PUB-
LISHED BY SONY.
Discrimination of MAIN board
– MAIN BOARD (Side A) –
1-671-585-11
or
1-671-585-12

– 3 –
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
Befor Replacing the Optical Pick-Up Block
Please be sure to check thoroughly the parameters as par the “Op-
tical Pick-Up Block Checking Procedures” (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
• FOK output: IC501 !™ pin
When checking FOK, remove the lead wire to disc motor.
• S curve P-to-P value: 0.6 to 1.8 Vp-p IC501 #¡ pin
When checking S curve P-to-P value, remove the lead wire to
disc motor.
• RF signal P-to-P value: 0.8 to 1.2 Vp-p
• Traverse signal P-to-P value: 1.2 Vp-p
• The repairing grating holder is impossible.
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface
of the disc. Therefore, be sure to keep your eyes more then 30 cm
apart from the object lens when you check the emission of laser
diode.
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper panel is closed while turning
ON the S801. (push switch type)
The following two checking methods for the laser diode are oper-
able.
• Method (In the service mode or normal operation):
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S801 as shown in Fig. 1.
3. Press the ^key.
4. Check the object lens for confirming normal emission of the
laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
During normal operation, the laser diode is turned ON about
2.5 seconds for focus searching.
Fig. 1 Method to push the S801
S801

– 4 –
SECTION 2
GENERAL This section is extracted from
instruction manual.

– 5 –

– 6 –

– 7 –

– 8 –
Note: Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
CABINET (LOWER)
INSTALLATION MAIN BOARD
On installation MAIN board adjust the
S301, 803, 804, and knob (H-R, AVLS).
1 five screws
(2
× 8)
5 cabinet (lower)
4 two claws
4 two claws
2 Open the battery case lid.
3 two claws
S804
S301
S803
Note:Take care not to allow the rechargeable
battery detection plate to ride on the mold
of the bottom plate.
knob (AVLS)
knob (H-R)

– 9 –
Service Mode (Service program)
The equipment is provided with a service program built in the
microcomputer, like conventional models.
Service program operation methods are described in the follow-
ing.
SECTION 4
SERVICE MODE
Descriptions in [ ] indicate major operations in the service
mode. For more informatrion, see Step 2.
Fig. 1 Layout of each key
• Step 1 (Service mode setting methods)
1. Turn OFF the HOLD switch with external power supply dis-
connected. (power is not applied to the set)
2. Solder across the TEST terminals (TAP802). (pin %¢, IC801
(ESPSL/TEST) is grounded)
3. Connect an external power supply.
Thus, the set is switched to the service mode.
• Step 2 (Operation in the service mode)
1. Once the service mode is effected, the LCD displays 5 indica-
tions each of which is repeatedly displayed.
However, the following operations can be activated even if LCD
indication is effected.
2. By pressing the +or =key, the optical pick-up is mov-
able inwardly or outwardly. However, if this is activated, track-
ing servo and sled servo are turned OFF, so it can be turned
ON by pressing the PLAY MODE key if required.
3. By pressing the REPEAT/ENTER key, the tracking gain-up
mode becomes active.
4. By pressing the ^key, focus is turned ON from focus search-
ing while entering CLV-S. (draw-in mode)
Without disc, focus searching is repeated continuously.
5. By pressing the PLAY MODE key, tracking servo, sled servo
and CLV-A (servo in PLAY) are turned ON.
6. When step 4 and 5 are performed, playing begins. No muting
is ON in the service mode.
7. By pressing the pkey, all servos (focus, tracking and sled)
are turned OFF. However, the disc motor revolves for a while
by inertia.
• Step 3 (Resetting of service mode)
1. Be sure to disconnect the external power supply and remove
the solder bridge at the TEST terminals connected before in
setting.
2. The set thus becomes available for normal operation.
Fig. 2 Location ofTest terminal
– MAIN BOARD (Side A) –
p (STOP)
[All servos are turned OFF]
^ (PLAY/PAUSE)
Focus is tuned ON to
effect draw-in mode
+ (FF)
The optical pick-up
is moved outwardly
= (FR)
The optical pick-up
is moved inwardly
PLAY MODE
Tracking servo and sled
servo are turned ON
REPEAT/ENTER
Tracking gain-up mode
while pressing
HOLD c
Be sure to turn OFF
the HOLD switch
(If ON, all the LCD
indication and
LED are lightup)
TAP802
(TEST)

– 10 –
SECTION 5
ELECTRICAL ADJUSTMENTS
Precautions for Adjustment
1. Before beginning adjustment, set the equipment to service
mode.
After the completion of adjustment, be sure to reset the ser-
vice mode.
For more information, see “Service Mode (service program) ”
on page 9.
2. Perform adjustments in the order given.
3. UseYEDS-18 disc (Part No.: 3-702-101-01) unless otherwise
indicated.
4. Power supply voltage requirement: DC2.5 V in battery termi-
nal
VOLUME knob : Minimum
RESUME switch : OFF
ESP switch : OFF
AVLS switch : NORMAL
HOLD switch : OFF
Before Beginning Adjustment
Set the equipment to service mode (See page 9) and check the
following. If there is an error, repair the equipment.
• Checking of the sled motor
1. Open the upper panel.
2. Press the +and =keys and check that the optical pick-
up can move smoothly without sluggishness or abnormal noise
in innermost periphery noutermost periphery ninnermost
periphery
+: The optical pick-up moves outwardly.
=: The optical pick-up moves inwardly.
• Checking of focus searching
1. Open the upper panel.
2. Press the ^key. (Focus searching operation is activated
continuously)
3. Check the object lens of the optical pick-up for smooth up/
down motion without sluggishness or abnormal noise.
4. Press the pkey.
Check that focus searching operation is deactivated. If not,
again press the pkey slightly longer.
VCC Adjustment
Adjustment Procedure:
1. Set the equipment to service mode stop state. (See page 9)
2. Connect the digital voltmeter to TP401 (VCC) on the MAIN
board.
3. Adjust RV401 on the MAIN board so that the reading on digi-
tal voltmeter goes 2.53 V.
Specifications: 2.5 V to 2.55 V
4. After the completion of adjustment, reset service mode. (See
page 9)
Adjustment Location:MAIN Board (SUFFIX-11: See page 12,
SUFFIX-12: See page 13)
digital voltmeter
(DC range)
MAIN board
TP401 (VCC) +
–
SUFFIX-11: See page 12
SUFFIX-12: See page 13
Focus bias Check
Condition:
• Hold the set in horizontal state.
Check Procedure:
1. Set the equipment to service mode stop state. (See page 9)
2. Connect the oscilloscope to the test point TP522 (RFO) on the
MAIN board.
3. Move the optical pick-up to the center by pressing the +
and =keys.
4. Put the disc. (YEDS-18)
5. Press the ^key.
From focus searching, focus is turned ON while entering
CLV drawing-in mode. Tracking and sled are turned OFF.
6. Press the PLAY MODE key. (Both tracking and sled are turned
ON)
7. Check the oscilloscope waveform is as shown below.
A good eye pattern means that the diamond shape (≈) in the
center of the waveform can be clearly distinguished.
RF Signal referenceWaveform (Eye Pattern)
VOLT/DIV : 200 mV (With the 10:1 probe in use)
TIME/DIV : 500 ns
To watch the eye pattern, set the oscilloscope to AC range and
increasethe verticalsensitivity ofthe oscilloscopefor easywatch-
ing.
8. Stop revolving of the disc motor by pressing the pkey.
9. After the completion of adjustment, reset service mode. (See
page 9)
Checking Location: MAIN Board (SUFFIX-11: See page 12,
SUFFIX-12: See page 13)
RF level
0.8 to 1.2 Vp-p
oscilloscope
(AC range)
+
–
MAIN board
TP522 (RFO)
TP520 (VC)
2 k
Ω
SUFFIX-11: See page 12
SUFFIX-12: See page 13

D-E808/E885
– 11 – – 12 – – 13 –
Focus/Tracking Gain Adjustment
A servo analayzer is necessary in order to perform this adjustment
exactly.
However, this gain has a margin, so even if it is slightly off,
there is no problem. Therefore, do not perform this adjustment.
Focus/tracking gain determines the optical pick-up follow-up rela-
tive to mechanical noise and mechanical shock when the 2-axis
device operates. However, as these reciprocate, the adjustment is
at the point where both are satisfied.
• When gain is rased, the noise when 2-axis device operates in-
crease.
• When gain is lowered, it is more susceptible to mechanical shock
and skipping occurs more easily.
This adjustment has to be performed upon replacing any of the
following parts.
• Optical pick-up
• RV503 (Focus gain VR)
• RV502 (Tracking gain VR)
Normally, be sure not to move RV503 (focus gain VR) and
RV502 (tracking gain VR).
Adjustment procedure:
– Focus Gain Adjustment –
This adjustment is not performed.
If focus gain VR RV503 is turned, set to mechanical center.
Adjustment Location: MAIN Board (SUFFIX-11: See page 12,
SUFFIX-12: See page 13)
–Tracking Gain Adjustment –
(perform at normal operation)
1. Place the optical pick-up level, horizontally. (If the optical
pick-up is not level, the 2-axis device will be weighted and
adjustment cannot be done)
2. Connect the oscilloscope to TP (TE) and TP520 (VC) on the
MAIN board.
3. Set the disc (YEDS-18) and press the ^key.
4. Turn RV502 slightly clockwise (tracking gain drops) and ob-
tain a waveform with a fundamental wave (waveform has large
waves) as in Figure 1.
5. Turn RV502 slowly counterclockwise (tracking gain rises) until
the fundamental wave disappears (no large waves) as in Fig-
ure 2.
6. Set RV502 to the position about 30˚ counterclockwise form
the position obtained in step 5. If RV502 contact point is more
than 90˚ counterclockwise from mechanical center, tracking
gain is too high. In this case, readjust from step 4.
7. Press +or =key and observe the 100 track jump wave-
form. Check that no traverse waveform appears for both +
or =directions. (See Figures 3 and 4)
It is acceptable if the traverse waveform appears only now and
then, but if it appears constantly, raise tracking gain slightly
and check step 7 again.
8. Check that there is not abnormal amount of operation noise
(white noise) from the 2-axis device. If there is, tracking gain
is too high, readjust starting with step 4.
The waveforms are those measured with the oscilloscope set as
shown below.
• VOLT/DIV: 500 mV
• TIME/DIV: 5 ms
• Waveform when tracking gain is lowered.
Fundamental wave appears. (large waves)
Fig. 1
• Waveform when fundamental wave disappears. (no large waves)
Fig. 2
• Waveform with no traverse waveform during 100 track jump.
(Brake application is smooth because of adjustment)
Fig. 3
• Waveform with traverse waveform during 100 track jump.
(Brake application is poor because of adjustment)
Fig. 4
Adjustment Location: MAIN Board (SUFFIX-11: See page 12,
SUFFIX-12: See page 13)
100 track
j
ump waveform
100 track jump
waveform traverse waveform
oscilloscope
(DC range)
MAIN board
TP (TE)
TP520 (VC)
+
–
10 k Ω
0.0022 µ F
SUFFIX-11: See page 12
SUFFIX-12: See page 13
––– 0 V
––– 0 V
––– 0 V
––– 0 V
Adjustment and Checking Location:
– MAIN BOARD (Side A) – (SUFFIX-11)
RV401
(VCC)
TP401
(VCC)
RV503
Focus Gain
Adjustment TP520
(VC) TP
(TE) RV502
Tracking Gain
Adjustment
TP522
(RFO)
– MAIN BOARD (Side A) – (SUFFIX-12)
RV401
(VCC)
TP401
(VCC)
RV503
Focus Gain
Adjustment TP520
(VC) TP
(TE) RV502
Tracking Gain
Adjustment
TP522
(RFO)

D-E808/E885
– 15 – – 16 – – 17 – – 18 –
6-1. BLOCK DIAGRAM – MAIN Section –
SECTION 6
DIAGRAMS
D804
VCPU
VCPU
VCC
RMDAT
RMKEY
GND
LIN
RIN
TAP802
(TEST)
D301
LO
RO
VCC
(LINE OUT JACK)
–1
–2
J301
LINE OUT
(OPTICAL)
J302
2/REMOTE
RV301
∑VOL
X301
16.9344MHz XTLO
XTLI
CKO
D-RAM
IC602
XCAS
XWE
XRAS XCAS
XWE
XRAS
D-RAM CONTROLLER
IC601
DIGITAL FILTER,
D/A CONVERTER,
LOW-PASS FILTER
IC301
HEADPHONE AMP
IC302
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO SIGNAL PROCESSOR
IC502
RF AMP,
FOCUS/TRACKING ERROR AMP
IC501
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC504
ERR2
OUT2A
OUT2B
M901
(SLED)
OSMNT
AUTO TRAVERSE
SWITCH
IC507
S901
(LIMIT)
CLK
DATA
D601
D604
C2FX
RFCK
WFCK
XIN
VC
FE DVR
TE DRV
SL IN
Q511
TRACKING GAIN
CONTROL SWITCH
Q505
RESET SWITCH
Q501
TRACKING
GAIN UP SWITCH
RF AMP RFO RFI
RF
SUMMING
AMP
DETECTOR
BLOCK
FOCUS OK
COMPARATOR
FOCUS
ERROR AMP
TRACKING
ERROR AMP
LD/PD
AMP
BUFFER
IC505
TRACKING
GAIN UP SWITCH
Q513
B+ SWITCH
Q602
LINE MUTE
Q101
AVLS
SWITCH
Q304 KEY WAKE-UP
SWITCH
Q801
LINE MUTE
Q201
LINE MUTE
CONTROL SWITCH
Q302
FOCUS
SWITCH
RV503
FOCUS GAIN
RV502
TRACKING
GAIN
EFM
COMPARATOR PLL
A
B
C
D
LASER DIODE
OPTICAL PICK-UP
DAX-11E
A
A
B
C
E
F
B
C
E
F
LD2
LD1
PD LD
05
DETECTOR
D0 – D3A0 – A10 D0 – D3A0 – A10
SL DRV
COMPC
SDTO
SDTI SCK
BUSY
55
14
15
LOUT
ROUT
8
6
VREF 7
9
5
16
15
13
33
28
34
4
23
5
SWITCH UNIT (2/2)
(LIGHT)
VCPU
VLCD1 VLCD2
VLCD3
X801
4.195MHz
VCPU
XHOLD SEG0 – SEG14 COM0 – COM3
1514132131
3
15
12
10
62 FOK
42 IRMC
46
XLMT
33 TON
18
80
24
4
2 1
21 25 26
XLT
24
SDATA
SHCK
20 19
DACLT
18 PWRSW
20
MUTE
19
BEEP
17
MIX OUT
10
ALC IN
11
ALC DET
12
INSL
11
36
37
59
DATA 69
LRCK 68
BCLK
DATI
LRCI
BCKI
70
11
12
13
DATA
LRCK
BCLK
22
24
23
DATO
LRCO
BCKO
16
15
OPMUTE
DIT 2
7
14
XROF
17
RFCK
18
20
SCOR
19
CLK
9
WDCK 67
C2PO 66
74
43
RW
26
SQCK
25
CDATA
24 30
SUBQ
23
SUBCLK
CLK
DATA
40 73
SBSO
39
RESET
XRST 176K
SCOR
BUSY
4
OE
RW
SQCK
CDATA
SUBQ
8
C2PO FILTER
10
C2POEN
39
SDTO
54
ESPSL/TEST
29
XAVLS
12
RMDAT
56
RMKEY
36
WP
KEY
28
AMUTE
19
XOSC2
44
BEEP
40
SDTI
41
SCK
37
XLT
SCOR
45
45 44 41 42 43 38
28
23 EFM 16 WINDOW EFM
DEMODULATOR ERROR CORRECTION INTERPOLATION
16K RAM
TRACK
JUMP
FOCUS
FILTER
OFFSET ADJ
MOTOR
DRIVE
ERR4
OUT4A
OUT4B 22
25
27 MOTOR
DRIVE
ERR3
OUT3A
OUT3B 21
30
28 COIL
DRIVE
ERR1
OUT1A
OUT1B 16
OE
CLK
1VG
4
7
9COIL
DRIVE
CLV
SERVO
CPU
INTERFACE SUB CODE
PROCESSOR TIMING GENERATOR
RAM OVERFLOW
DETECT
Q601
C2PO FILTER
SWITCH
Q603
TRACKING
FILTER
SLED
3
2
ASY
EFM
33 DEFECT
12 FOK
34 MIRR
13 FEI
16 TEI
18 TZC
47 TGUP
76 GFS
15
23
MUTE1 31
MUTE2 32
22
21
CLVS 25
FON
ASY
17
FON
VC
11
FOK 12
DEFECT 14
MIRR 15
FEO 13
TEO 10
7
22
26
25
27
EI
1
FI
2
LD
PD
6
D801
Q511
DEFECT AMP
MIRR COMPARATOR
VC
VC
Q501
XRST
M
M902
(SPINDLE)
(TRACKING)
2-AXIS
DEVICE (FOCUS)
M
S804
HOLD c
XRSM
34
OPEN
OSC1 LIGHT
22
OSC2
35 7
ON
OFF
ON
OFF
S803
RESUME S801
OPEN
NORM
LIMIT
S301
AVLS
63 – 77 51 – 48
LIQUID CRYSTAL
DISPLAY
SWITCH UNIT (1/2)
41 – 44, 40 – 35, 27 31, 32, 29, 30
9 – 12, 15, 19, 21, 8 2, 3, 24, 25
OPTICAL
TRANSCEIVER
D803
SYSTEM CONTROLLER
IC801 (1/2)
LD1, LD2
A
VG
(Page 19) C
DCDTB
(Page 19)
D
176K
(Page 19)
CLK
(Page 19)
(Page 19)
B
• SIGNAL PATH
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
9
DACLT
D405
(Suffix -12)
(Suffix -12)
(Suffix -12)
46
E
D501
(Suffix -12)

D-E808/E885
– 19 – – 20 – – 21 – – 22 –
6-2. BLOCK DIAGRAM – POWER SUPPLY Section – 6-3. IC PIN FUNCTION DESCRIPTION
+
–
BATT B+
MOTOR/COIL DRIVER (IC504),
HEADPHONE AMP (IC302) B+
RECHARGEABLE
BATTERY
NH-DM2AA
2PCS. 2.4V
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION LR6)
2PCS. 3V
D407
CHARGE
SWITCH
Q402, 414
REGULATOR
IC402
CHARGE
MONITOR
IC403
A/D
CHARGE
SWITCH
Q401
DC/DC
CONVERTER
T401
AUTOMATIC POWER
CONTROL
Q408
SWITCHING
REGULATOR
Q406
DC/DC CONVERTER
MUTE SWITCH
Q452
VCPU VOLTAGE
MONITOR
Q417
B+ SWITCH
Q303
RECTIFIER
Q405
ERROR
AMP
PWM
2
PWM
1
ERROR
AMP
REGULATOR
LOW VCPU
DETECT
DC IN
DETECT
SYSTEM
CONTROL
CHARGE
AMP
OSC
Q403
7
10
6
11
29
BATT B+
SYSTEM CONTROLLER
IC801 (2/2)
POWER CONTROL
IC401
LD1
LD1, LD2
LD2
Q409
Q409, 410
AUTOMATIC
POWER CONTROL
SWITCH
Q410
Q411
SWITCHING
DDCMUTE
VCPU
VCPU
VCPU
AVDD
D/A CONVERTER (IC301) B+
VCPU
VCPU
VCC
VCC
DTC1
8INM1
9INP1
RF1
CMP1
DTC3
5
2
PCON 27
CHGON 11
RESET 20
CHGMNT1 59
INP2
20
17
VCPU
PCB
18 CHGON
15 CKOUT
23 VG
2DCDTB
31 CHGOUT
CHGMNT2 61
VCCMNT 5
BATMNT 58
DCINMNT 57
14 RSTB
VCC
RV401
VREF
VREF
VCPU
VOUT2
35
RF3
33
CHGSW
1
RS
32
BATM
30
VIN
STEP UP
DC/DC
CONVERTER
21
SW
22
VDD
34
DCIN D415
D404
D806
D411
1
43
CHARGE
Q407
AUTOMATIC POWER
CONTROL SWITCH
RIPPLE
FILTER
Q451
PWM
4
25
UPCK1B
24
UPCK1
26
VOUT1
BATT B+
(Page 15)
A
VG
(Page 15)
C
DCDTB
(Page 18)
D
CLK
(Page 15)
B
J401
DC IN 4.5V
–+
05
DPCON 3
Q454
DC/DC CONVERTER
MUTE SWITCH
(Suffix -11)
(Suffix -12)
(Suffix -12)
Q453
DC/DC CONVERTER
MUTE SWITCH
(Suffix -12)
(Suffix -12)
16 SYNC
176K
E
(Page 18)
(Suffix -11)
•
Pin No. Pin Name I/O Description
1 VDD — Power supply terminal (+3V)
2 DDCMUTE O DC/DC converter muting control signal output terminal
3 DPCON O DC/DC converter on/off selection signal output terminal
4OEO
Output enable signal output to the MPC17A51VMEL (IC504) “L” active
5VCCMNT I Main DC/DC converter voltage (+2.75V) monitor input (A/D input)
6MDL SL I Destination setting terminal Fixed at “H” in this set
7 LIGHT OBack light control signal output to the liquid crystal display on the switch unit
“H”: back light on
8 C2PO FILTER O C2PO (error condition monitor) filter on/off control signal output terminal
9 DACLT O Serial data latch pulse signal output to the D/A converter (IC301)
10 C2POEN OC2PO (error condition monitor) signal control output terminal
“L”: stop mode, “H”: searching
11 CHGON O Charging on output to the MPC18A26VMEL (IC401) “L”: charge on
12 RMDAT I/O Communication data in/out for the liquid crystal display with remote commander
13 VLCD3 O
14 VLCD2 O Power supply output for the liquid crystal display bias
15 VLCD1 O
16 VSS — Ground terminal
17 VPP — Power supply terminal (0V)
18 TON O Traverse on/off control signal output to the auto traverse circuit
19 XOSC2 O Standby control signal output to the headphone amplifier (IC302)
20 RESET I System reset signal input from the MPC18A26VMEL (IC401) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
21 OSC1 I Main system clock input terminal (4.195 MHz)
22 OSC2 O Main system clock output terminal (4.195 MHz)
23 SUBQ I Sub-code Q data signal input from the BU9326KS (IC502)
24 CDATA O Serial data output to the D/A converter (IC301) and BU9326KS (IC502)
25 SQCK O Sub-code Q data reading clock signal output to the D/A converter (IC301) and BU9326KS
(IC502)
26 RW O Data read/write selection signal output to the BU9326KS (IC502)
“L”: reading mode, “H”: writing mode
27 PCON O Power on/off control signal output to the MPC18A26VMEL (IC401)
“L”: power on, “H”: power off
28 AMUTE O Analog muting on/off control signal output terminal “H”: muting on
29 XAVLS I AVLS (Automatic Volume Limiter System) switch (S301) input terminal
“L”: limit mode, “H”: normal mode
30 XRST O System reset signal output to the BU9326KS (IC502) and D-RAM controller (IC601)
“L”: reset
31 XHOLD I HOLD switch (S804) input terminal “L”: hold on, “H”: hold off
32 XRCHG I Rechargeable battery pack detection switch input terminal “L”: rechargeable battery pack in
Not used (open)
33 XLMT I Sled limit-in detection switch (S901) input terminal
The optical pick-up is inner position when “L”
34 XRSM I RESUME switch (S803) input terminal “L”: resume on, “H”: resume off
35 OPEN I CD door open/close detection switch (S801) input terminal
The stop status is reset with the falling edge of input signal
MAIN BOARD IC801 (SYSTEM CONTROLLER)
MC68HC05L24-SC440482CFU (SUFFIX-11), MC68HC05L24-SC440488CFU (SUFFIX-12)
Pin No. Pin Name I/O Description
36 WP I Wake-up control signal input terminal
The stop status is reset with the falling edge of input signal
37 XLT O Serial data latch pulse signal output to the D-RAM controller (IC601) (for ESP)
38 XSOE O Serial data output enable signal output terminal (for ESP) Not used (pull up)
39 SDTO I Serial data input from the D-RAM controller (IC601) (for ESP)
40 SDTI O Serial data output to the D-RAM controller (IC601) (for ESP)
41 SCK O Serial data transfer clock signal output to the D-RAM controller (IC601) (for ESP)
42 FOK I Focus OK signal input from the RF amplifier (IC501) “L”: NG, “H”: OK
43 BUSY I Busy signal input from the BU9326KS (IC502) “L”: track jump mode, “H”: servo loop on
44 BEEP O Beep sound output to the headphone amplifier (IC302)
45 SCOR I Sub-code sync (S0+S1) detection signal input from the BU9326KS (IC502)
46 IRMC I Attenuate display selection signal input from the RF amplifier (IC501)
47 VDD — Power supply terminal (+3V)
48 to 51 COM3 to COM0 O Common drive signal output to the liquid crystal display on the switch unit
52 VREFH I Reference voltage input terminal (+3V) (for A/D converter)
53 VREFL I Reference voltage input terminal (0V) (for A/D converter)
54 ESPSL/TEST I Service mode setting terminal “L”: service mode, Normally: fixed at “H”
55 KEY I Key input from the switch unit (A/D input)
56 RMKEY I Key input from the headphone with remote commander (A/D input)
57 DCINMNT I DC in voltage detection input terminal (A/D input) Also used for DC IN detection
58 BATMNT I Battery voltage detection input terminal
Also used for rechargeable battery/dry battery detection
59 CHGMNT1 I Battery charging voltage detection input from the MPC18A26VMEL (IC401)
60 VSS — Ground terminal
61 CHGMNT2 I Battery voltage detection input terminal (A/D input)
Also used for rechargeable battery/dry battery detection
62 OSMNT I DSP offset voltage adjustment voltage monitor input from the BU9326KS (IC502)
63 to 77 SEG0 to SEG14 O Segment drive signal output to the liquid crystal display on the switch unit
78, 79 SEG15, SEG16 O Segment drive signal output terminal Not used (open)
80 X9326 I/O Error correction “L”: quadruple correction, “H”: double correction
Fixed at “L” in this set

D-E808/E885
– 23 –
• Waveforms
1IC501 !º (TEO) (PLAY MODE)
500 mV/DIV, 1 ms/DIV
Approx.
920 mVp-p
2.8 Vp-p
480 ns
10 Vp-p
4.8 µ s
2IC501 !£ (FEO) (PLAY MODE)
500 mV/DIV, 10 ms/DIV
Approx.
640 mVp-p
3IC501 @£ (RFO) (PLAY MODE)
500 mV/DIV, 1 µs/DIV
4IC502 ^• (LRCK) (PLAY MODE)
1 V/DIV, 10 µs/DIV
6IC502 &¢ (XIN)
500 mV/DIV, 20 ns/DIV
5IC502 &º (BCLK)
1 V/DIV, 2 µs/DIV 9Q405 B 5 V/DIV, 2 µs/DIV
!º Q405 C
2 V/DIV, 2 µs/DIV
7IC301 !§ (XTLO)
1 V/DIV, 20 ns/DIV !¡ IC401 !∞ (CKOUT) 2 V/DIV, 2 µs/DIV
8IC801 @¡ (OSC1)
1 V/DIV, 100 ns/DIV
0.8 – 1.2 Vp-p
2.8 Vp-p
44.1 kHz
1.6 Vp-p
58.8 ns
2.3 Vp-p
59 ns
2.3 Vp-p
238 ns
6.5 Vp-p
4.8 µ s
4.1 Vp-p
5.7 µ s

D-E808/E885
– 27 – – 28 – – 29 – – 30 –
6-5. SCHEMATIC DIAGRAM (SUFFIX-11) • See page 23 forWaveforms. •See page 38 for IC Block Diagrams.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•U: B+ Line.
•H: adjustment for repair.
• Power voltageis dc 4.5V andfed with regulateddcpower
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground
under conditions in service mode.
no mark : CD PLAY
∗: Impossible to measure
• Voltages aretakenwithaVOM(Input impedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD PLAY (ANALOG OUT)
c: CD PLAY (OPTICAL OUT)
Note: The components identified by mark !or dotted line
with mark !are critical for safety.
Replace only with part number specified.

D-E808/E885
– 31 – – 32 – – 33 – – 34 –
6-6. SCHEMATIC DIAGRAM (SUFFIX-12) • See page 23 forWaveforms. •See page 38 for IC Block Diagrams.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•U: B+ Line.
•H: adjustment for repair.
• Powervoltage is dc 4.5Vandfedwith regulateddcpower
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground
under conditions in service mode.
no mark : CD PLAY
∗: Impossible to measure
• Voltages aretakenwithaVOM(Input impedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD PLAY (ANALOG OUT)
c: CD PLAY (OPTICAL OUT)
• Abbreviation
FR : French model
Note:
The components identi-
fied by mark !or dotted
linewithmark!are criti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposants identifiés par
une marque !sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.

D-E808/E885
– 38 – – 39 – – 40 –
• IC Block Diagrams
IC301 TC9438FNEL
IC302 TA2120FN (EL)
+ –
+ –
+ –
23 20 19 18 17 16 15 14 13
234 5 678910 11 12
1
24
BIAS BEEP
PW
SW MT SW
ALC
DET
ATT
SW
PWC
SW
OUT B OUT A
BEEP
IN
BST
PW
BPW
C
BST
NF ADD OUT RF IN PWC SW OUT B OUT C OUT A PWR GND MIX OUT ALC IN ALC DET
ATT
SW
IN AIN BGND
MT
TC
MT
SW
PW
SW
BIAS
BIAS
IN
BST
SW
BST
OUT
VCC
ADD
A
ADD B
21
22
PW
A
ALC ALC
DATA
INTERFACE
CIRCUIT
MICRO COMPUTER
INTERFACE
CIRCUIT OSC
20
TIMING
GENERATOR
DINAMIC
BASS BOOST
CIRCUIT DIGITAL FILTER CIRCUIT
DEEMPHASIS FILTER CIRCUIT
ATTENUATOR OPERATIONAL CIRCUIT
∑-∆MODULATION CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
TEST
CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
24 23 22 21 17 16 15 14 19 18
34 8 10 11 12 1 2 6 7
59
LRCK BCK DATA DBB2
(DBB1)
ATT (EMP)
SHIFT (SM) LATCH VDX XO XI GNDX MCK
13
VDD T1 VDA RO GNDA VR
P/S GNDA LO VDA ZD GNDD
IC401 MPC18A26VMEL
+
–
1
7
8
9
36
34
28
23
21
20
ERROR AMP
CHARGESW
CHARGE
AMP
DCIN DETECT 35
33
ERROR AMP
PWM2
2
3
4
5
10 PWM1
32
31
30
SYSTEM
CONTROL
OSC2
LOW VCPU
DETECT
12
13
14
15
16
17
18
VCPU
22
BANDGAP
REFERENCE
STEP-UP
DC-DC
CONVERTER
REGULATOR
SAWTOOTH
PWM4
SUB
REFERENCE
11
VG
VG
VG
VG
VG
27
29
26
25
24
19
INM3
RF3
DCIN
CHGSW
BATM
CHGOUT
VIN
VOUT2
NC
VOUTB1
VOUT1
UPCKB1
UPCK1
VG
VDO
SW
VCPU
GND
RS
DCDTB
RF2
INM2
INP2
DTC3
RF1
INM1
INP1
CMP1
DTC1
VREF
SWEN
RSTB
CKOUT
SYNC
PCB
CHGON
6
IC501 BA6386K
DET BLOCK
PS PL BL BS
+
–
+
–
+
–
+ –
+ –
+ –
+
15
FOCUS
SWITCH
SCRATCH
CONTROL
RAMP
OSC
+
–
12
16
+
–
24
+
–
25
26
27
28
+ –
2122
23 20 19 17
+
–
+
–
31
30
+ –
29
8
6
11
9
5 7
+
–
4
3
10
1
32
FOCUS BIAS
18
EFM
MIRR
DEFECT
13 FEO
FOK
FON
TEO
DFR
SROCH
PD
LD
CAPC
CAGC
GND
F
E
EI
FE
VC
FBIAS
A
D
B
C
RF- RFO RFI VCC PLH BLT RAGC ASY
14
HOLD BLOCK
LOOP ON
2
–

– 41 –
IC502 BU9326KS
IC601 SM5902AF
20
56
55
54
53
52
51
50
49
48
26 27
80 75 73 72
PLL
SUB
CLOCK
GEN
ECC
16k SRAM
SERVO
FILTER CLV SERVO
CONTROL uCOM
INTERFACE
DVDD
AVDD
7476
77
79 78 66 65 64 63 62 61
71 70 69 68 67
1
2
4
5
6
8
9
11
10
3
7VC
12
13
14
15
16
17
18
19
WINDOW
60
59
58
57
47
46
45
44
43
42
41
28 29 30 31 33 34 35 36 32 37 38 39 4025
21 22 23 24
AVDD
ASY
EYE
FCO
PCO
TESTI
VC
ADPFI
ADPFO
AGND
RVCO
FOK
FEIN
FCAPA
FON
TEIN
ATS
TZC
TCAPA
TEST2
FDOUT
TDOUT
SDIN
SDOUT
CLVOUT
TEST3
TEST4
CLVOPP
CLVOPN
CLVOPO
MUTE1
MUTE2
SCRATCH
MIRROR
DGND
RFCK
WFCK
SUBSYQ
SUBDATA
SUBCK
C1FX
C2FX
C2F3
C2F4
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
TEST5
GAINUP
CK176
BUSY
RW
DOUT
DIN
MCK
COMPC XPLCK SENS
DVDD
GFS
N.C
SYSCKI RESET DGND CLK
DOCK DOUTA
LRCK
DE
C2F C2CLK C1F1
C1F2
C2F1 C2F2
ENCODER
GENERAL
PORT INPUT
CONTROL 1
10
DRAM 1/F
DECODER
MICRO
COMPUTER
1/F
ATTENUATOR
INPUT
BUFFER INPUT
1/F
OUTPUT
1/F
INPUT
CONTROL 2
811
22
34
35
36
37
38
39
40
41
42
43
44
33 32 31 30 29 28 27 23
24
25
26
7
20
21
14
16
15
17
19
18
12
13
2
13456
COMPRESSION
MODE
THROUGH
MODE
NWE D1
D0 D3 D2 NCAS
A10/NCAS2
NRAS
A9
A8
A7
A6
A5
A4
A0
A1
A2
A3
VDD2
UC1
UC2 UC3 UC4
UC5
DIT
NTEST
CLK
VSS
YSRDATA
VDD1
ZSENSE
NRESET
YBLKCK
YFCLK
YFLAG
ZSRDATA
ZLRCK
ZSCK
YSCK
YLRCK
YDMUTE YMLD
YMDATA
YMCLK
9