Sony CDP-790 User manual

Compact disc player
Frequency response
Signal to noise ratio
Dynamic range
Harmonic distortion
Channel separation
Outputs
LINE OUT
(phono jacks)
DIGITAL OUT (OPTICAL)
(optical output connector)
PHONES
(stereo phone jack)
General
Power requirements
Power consumption
Dimensions
(approx., including
projections)
Weight (approx.)
US Model
SPECIFICATIONS
2 Hz - 20 kHz+0.3 dB
More than 104 dB
More than 97 dB
Less than 0.003%
More than 98 dB
Output level 2 V (at 50 kilohms)
Load impedance over 10 kilohms
Wave length 660 nm
Output level — 18 dBm
Output level max. 15 mW
Load impedance 32 ohms
120 V AC, 60Hz
14W
430 X 110 X 280 mm (w/h/d)
(17 X 49/.X 11'/s inches)
3.8 kg (8 lbs 70z)
Supplied accessories
Audio cord 1 (2 phono plugs - 2 phono plugs)
Remote commander 1
R6 (size AA) batteries 2
Remote commander (RM-D290)
Remote control system infrared control
Power requirements 3 V DC with two R6 (size AA) batteries
Dimensions Approx. 67 X 18 X 175 mm (w/h/d)
(2°/4X 7/32 7 inches)
Weight Approx. 150 g (5.3 0z)
Including batteries
Design and specifications subject to change without notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
A 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 PUBLISHED BY SONY.
COMPACT DISC PLAYER
ONY.

CDP-790
SAFETY CHECK-OUT
After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:
Check the antenna terminals, metal trim, “‘metallized’”’
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5mA (500 microampers). Leakage
current can be measured by any one of three
methods.
ie
A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these instru-
ments.
A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
voltmeter
a (0.75 V)
= Earth Ground
Using an AC voltmeter to check AC leakage.
POP OPO OPO DOPED ODL EDEL DOP OPED ODED OPED EPD OL OLE OOD A DEE ERED ELROD ODED ODED EL ODODE EMO OLED ROEDER OOOO OP OEE OME DOO:
This set employs a laser. Therefore, be sure to follow
carefully the instructions below when servicing.
CAUTION
Use of controls or adjustments or performance
of procedures other than those specified herein
may result in hazardous radiation exposure.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
]. Laser Diode Properties
Material: GaAlAs
Wavelength: 780 mm
Emission Duration: continuous
Laser Output Power: less than 44.6 uW*
* This output is the value measured at a distance of
200 mm from the objective lens surface on the
Optical Pick-up Block.
2. During service, do not take the Optical Pick-up Block
apart, and do not adjust the APC circuit. If there is a
breakdown in the APC circuit (including laser diode),
replace the entire Optical Pick-up Block (including
APC board),
SERVICING NOTE
NOTES
ON
HANDLING
THE
OPTICAL
PICK-
UP
BLOCK
OR
BASE
UNIT
The laser diode in the optical pick-up block may
suffer
electrostatic
breakdown
because
of
the
poten-
tial
difference
generated
by
the
charged
electrostatic
load, etc. on clothing and the human body.
During
repair,
pay
attention
to
electrostatic
break-
down
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.
|
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be
focused on the disc reflective surface by the objective lens in
the optical pick-up block. Therefore, when checking the laser
diode emission, observe from more than 30cm away from the
objective lens.

1-1. LOCATION OF CONTROLS
Se en nen
NS Is SERENE Ses
SR SS ee
POWER switch
Disc tray
TIME button
Remote sensor
PEAK SEARCH button
[6] REPEAT button
[7] FADER (FADE IN/FADE OUT) button
[8] CHECK (program check) button
[9] CLEAR (program clear) button
MULTI PGM (multi-disc program) button
[41] PROGRAM button
[42] SHUFFLE button
[13] CONTINUE button
Remote Commander
SECTION 1
GENERAL
(26) (2) [24]
See ee eS
[15]
Numeric buttons
PHONE LEVEL control
PHONES jack
EDIT/TIME FADE button
TIME SET button
> 20 (over 20) button
<< BPI AMS") buttons
<< >> (manual search) buttons
lM (stop) button
Ill (pause) button
B (play) button
[25] Display window
[26] 4 (open/close) button
* AMS is an abbreviation of Automatic Music Sensor.
[1] 4 (open/close) button
[2] SHUFFLE button
[3] PGM (program) button
Numeric buttons
[5] AUTO SPACE button
[6] <4 IAMS buttons
[7] tem =m INDEX buttons
[8] << BY (manual search) buttons
[9 ] << B® SLOW (iow speed manual search) buttons
[10] FADER (FADE IN/FADE OUT) button
A <> B repeat button
[42] ™ (stop) button
[43] BE (pause) button
BP (play) button
CLEAR/REPEAT (A <> B repeat clear/repeat) button
> 20 (over 20) button
CONTINUE button

SECTION 2
ELECTRICAL ADJUSTMENT
1. Perform adjustments in the order given.
2. Use YEDS-18 disc (3-702-101-1) unless otherwise indicat-
ed.
3. Use the oscilloscope with more than 10MQ impedance.
RF Level Check
Procedure:
oscilloscope
(DC range)
BD board
—$—<<<—.
TP (RF) o
TP (VC) 06
1.
Connect
oscilloscope
to
test
point
TP
(RF)
and
TP
(VC)
on
BD
board.
2. Turn POWER switch on.
Put disc (YEDS-18) in and play back.
4. Confirm that RF level and eye pattern is optimum.
Oputimum eye pattern means that shape “©” can be
clearly distinguished at the center of the wave form.
ed
VOLT/DIV : 200mV
TIME/DIV : 500nS
WAY
RF signal Reference Waveform (eye pattern)
+09
wie \
HN
wn
XXX
We XN XH
NYY
XX
WY
iM
AN)
mee
Wi
Procedure :
A)
RF leve
1.2+0.3Vp-p
oscilloscope
(DC range)
BD board
mcm,
TP (TE QO) o
TP (VC) o
1. Connect test point TP (ADJ) and TP (TES) to ground
with lead wire.
2. Connect oscilloscope to test point TP (TE O) and TP
(VC) on BD board.
3. Turn POWER switch on.
4, Put disc (YEDS-18) in and play back.
5. Confirm that the oscilloscope waveform is symmetrical
on the top and bottom in relation to 0V.
6. After check, remove the lead wire connected in step 1.
Note: Take sweep time as long as possible to obtain best
waveform.
RF PLL Free-run Frequency Check
Procedure:
a counter
Main an ere
TP TP (PCK) a
1. Turn POWER switch on.
2. Put disc (YEDS-18) in and play back.
3. Confirm that reading on frequency counter is 4.3218M Hz.
Focus/Tracking Gain Adjustment
A frequency responce analyzer is necessary in order to
perform this adjustment exactly.
However, this gain cas a margin, so even if it is slightly off.
there is no problem. Therefore, do not perform this adjust-
ment.
Focus/tracking gain determines the pick-up follow-up (ver-
tical and horizontal) relative to mechanical noise and me-
chanical shock when the 2-axis device operate.
However, as these reciprocate, the adjustment is the point
where both are satisfied.
* When gain is raised, the noise when the 2-axis device
operates increases.
* When gain is lowered, mechanical shock and skipping
occurs more easily.
* When gain adjustment is off, the symptoms below appear.
low or high
Symptoms
* The time until music starts
becmes longer for STOP ~>
PLAY or automatic selection.
(Kd, PPI buttons pressed.)
(Normally takes about 1 sec-
onds.)
* Music does not start and disc
continues to rotate for STOP
—[> PLAY or automatic selec-
tion.
(Kd, PPI buttons pressed.)
*Sound is interrupted during
PLAY. Or time counter display
stops progressing.
*More noise during 2-axis
device operation.
The following is a simple adjustment method.
—Primary Adjustment—
Note: Since exact adjustment cannot be performed,
remember the positions of the controls before perfor-
ming the adjustment.
If the positions after the primary adjustment are
only a little different, returs the controls to the
original position.
oscilloscope
(DC range)
BD board
iene
TP (FE 0)
TP (TE O) oe’
TP (VC)

| CDP-790
Procedure : ;
high tracking gain
1.
Keep
the
set
horizontal.
high
fandamential
wave
than
for
low
gain
If the set is not horizontal, this adjustment cannot »)
eee due to the gravity against the 2-axis device.
2. Insert disc (YEDS-18) and press > PLAY button.
3. Connect oscilloscope to TP (FEO) and TP (VC) on BD
board.
4. Adjustment RV101 on BD board so that the waveform is
as shown in the figure below. (focus gain adjustment)
VOLT/DIV: 100mV
VOLT/DIV: IV
TIME/DIV : 2mS
— OV
TIME/DIV: 2mS Adjustment Location:
(BD board)
* Incorrent Examples (DC level changes more than on adjust-
ed waveform)
; VOLT/DIV: 100mvV
low focus gain TIME/DIV: 2mS
surat Pale ca Te SAL iy Me BPR
So json
be
VOLT/DIV: 100mV
high focus gain TIME/DIV : 2mS
{Main board)
75mV
aes Component side
5. Connect oscilloscope to TP (TEO) and TP (VC) on BD
board.
6. Adjust RV102 on BD board so that the waveform is as
shown the flgure below. (tracking gain adjustment)
VOLT/DIV: IV
TIME/DIV: 2mS
— OV
* Incorrect Examples (fundamentia wave appears)
low tracking gain
VOLT/DIV: 1V
TIME/DIV : 2mS
— 0V

CDP-790 CDP-790 CDP-790
SECTION 3
DIAGRAMS
3-1,
SEMICONDUCTOR
‘eSemiconductor
Location
3-2:_PRINTED
WIRING
BOARDS
LEAD
LAYOUTS
Tt na [oeation
28A1175-4FE : nm —
-
;
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7
:
LOAD
ING
we 4 “fT Main B0aR0} pecan sce:
E-4 broroerrorsrred a oe = a : -@ O—: parts extracted from the component side.
E-5 Se e @ =: Through hole.
E-5. ° : Pattern on the side which is seen.
F-3 e : Pattern of the rear side.
E-3
G-5
1-6
DTA114ES ES
DTC114ES LOAD OUT
DTC144ES
28C2458-YGR
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7901
DTC114EF TRANSFORMER
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OPTICAL
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Note: The components identified by mark A or dotted’
All capacitors are in uF unless otherwise noted. pF: wuF
5O0WV or less are not indicated except for electrolytics
and tantalums.
All resistors are in 2 and '/,W or less unless otherwise
specified.
line with mark A are critical for safety.
Replace only with part number specified.
: B+ Line
: B— Line
|: adjustment for repair.
Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark: STOP
Voltages are taken with a VOM (Input Impedance 10M Q)
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.
> :CD
Ze : digital out
3-3. SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
EDIT
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NOTE:
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
@ The construction parts of an assembled
part are indicated with a collation num-
ber in the remark column.
e items marked “*” are not stocked since
Ref.No
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ined rows
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
CHASSIS BLOCK
4-1.
Part No.
7-685-646-79
3-703-685-21
4-929-515-12
Description
SCREW +BVTP
SCREW (+BV 3X8)
PANEL (FRONT)
4-908-848-01 EMBLEM, SONY
* 4-929-557-01 CUSHION (PANEL)
X-4922-927-1 PANEL (SUB) ASSY
4-929-528-01 ESCUTCHEON (23)
7-685-645-79 SCREW +BVTP
4-922-921-01 BUTTON (POWER)
7-685~-134-19
4-929-529-01
4-929-521-11
* 4-922-524-01
CASE
PANEL, LOADING
HOLDER (LEFT)
* 4~922-523-01 HOLDER (RIGHT)
4-929-531-01 BUTTON (C)
A-4675-298-A KNOB (HP) ASSY
7-682~-547-04 SCREW +BVTT 3X6 (S)
* 4-929-561-01 CUSHION (CASE)
7-682-548-09 SCREW +BVTT 3X8 (S)
X-4885-950-1 FOOT ASSY
* 4-929-513-21 PANEL, BACK
3X8 TYPE2 N-S
3X6 TYPE2 N-S
SCREW +BTP 2.6X8 TYPE2 N-S
SECTION 4
EXPLODED VIEWS
@ Due to standardization, parts with part
number suffix -XX and -X may be dif-
ferent from the parts specified in the
components used on the set.
e@ Color Indication of Appearance Parts
Example:
(RED) ...KNOB, BALANCE (WHITE)
7
Cabinet's Color Parts Color
Sak
904
lied with
spies BO
ae
RV
10
=
os
er
The components
mark or dotted tine with mark
A are critical for safety.
identified by
Replace only with part number
specified.
J501
-—903
551
not supplied
b+ — Supplied with RV551
Remarks
RES, VAR, CARBON 20K/20K (PHONE LEVEL)
\
16
Remarks Ref.No Part No. Description
22 4-902-345-01 HEAT SINK
23 * 3-703-244-00 BUSHING (2104), CORD
24 7-682-547-09 SCREW +BVTT 3X6 (S)
25 4-886-821-11 SCREW, S TIGHT, +PTTWH 3X6
26 3-704-366-31 SCREW (CASE) (M3X6)
27 4-929-522-01 PLATE, INDICATION
28 4-929-527-01 BUTTON (M/C)
29 4-923-836-11 CUSHION
901 * 1-632-491-11 PC BOARD, SWITCH
902 * A-4617-453-A MOUNTED PCB, DISP
903 * 1-632-492-11 PC BOARD, VOLUME
904 * 1-632-490-11 PC BOARD, JACK
905 * A-4617-301-A MOUNTED PCB, MAIN
906 1-575-002-11 WIRE, FLAT TYPE (22 CORE)
907. A.1-575-105-11 CORD, POWER
FLD401 1-519-555-11 INDICATOR TUBE, FLUORESCENT
J501 1-568-519-21 JACK, LARGE TYPE (PHONES)
Q201 8-729-111-67 TRANSISTOR 2SB1094-L
RV551 1-238-487-11
29 T901 A\.1-449-921-11 TRANSFORMER, POWER

4-2. MD BLOCK (CDM14-5BD1)
M191
908
Ref.No Part No.
51 4-933-111-01
52 7-621-775-10
53 * 4-917-583-21
54 4-927-649-01
55 4-933-109-01
56 4-927-651-01
57 4-927-628-01
58 4-933-107-01
59 4-933-112-01
Description
CHASSIS (MD)
SCREW +B 2.6X4
BRACKET, YOKE
BELT
CAM
PULLEY (S)
GEAR (C)
GEAR (PL)
TABLE, DISK
Remarks
Ref. No Part No.
60 4-933-110-01
61 A~-4675-347-A
62 4-933-134-01
63 4-917-541-01
64 4-933-129-01
65 4-933-108-01
908 *1-632-202-11
M191 A-4604-363-A
BU-5BD1
(including 65)
Description Remarks
HOLDER (MG)
MG ASSY
SCREW (+PTPWH M2.6X6)
SPRING (B)
HOLDER (BU)
SHAFT (CAM)
PC BOARD, LOADING
MOTOR (L) ASSY

4-3. OPTICAL PICK-UP BLOCK
(BU-5BD1)
103
Ref.No Part No.
101
102
103
104
105
106
7-685-134-19
4-933-126-01
4-917-565-01
7-621-255-15
4-917-567-01
4-917-564-01
BA
M102
(including MA)
102
Description Remarks
SCREW +BTP 2.6X8 TYPE2 N-S
INSULATOR (A)
SHAFT, SLED
SCREW +P 2X3
GEAR (M)
GEAR (P), FLATNESS
CDP-790
106
Note:
The
components
identified
by
mark
A
or
dotted
line
with
mark
A
are
critical
for
safety.
Replace
only
with
part
number
specified.
Ref.No Part No. Description Remarks
909 *A-4617-161-A MOUNTED PCB, BD
910 1-575-001-11 WIRE, FLAT TYPE (12 CORE)
911 A\.8-848-144-11 DEVICE, OPTICAL KSS-240A
M101 X-4917-504-1 MOTOR ASSY (SLED)
Mi02 X-4917-523-1 MOTOR ASSY (SPINDLE)

CDP-790
SECTION 5
ELECTRICAL PARTS LIST
NOTE:
@ Due to standardization, replacements in the parts CAPACITORS: The components identified by
list may be different from the parts specified in MF: uF, PF: uwuF. mark or dotted line with mark
the diagrams or the components used on the set. RESISTORS A are critical for safety.
Replace only with part number
specified.
e@ stems marked “*x’’ are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
@ All resistors are in ohms.
@ F: nonflammable
COILS
@ MMH: mH, UH: wH
SEMICONDUCTORS
In each case, U: uw, for example:
UA...: WA..., UPA...: wPA...,
UPC...: uPC, UPD...: uwPD...
@ If there are two or more same circuits in a set
such as a stereophonic machine, only typical
circuit parts may be indicated and capacitors and
resistors in other same circuits may be omitted.
Ref.No Part No. Description Remarks Ref.No Part No. Description Remarks
901 * 1-632-491-11 PC BOARD, SWITCH C301 1-124-994-11 ELECT 100MF 20% 10V
902 * A-4617-453-A MOUNTED PCB, DISP C302 1-126-301-11 ELECT IMF 20% 50V
903 *1-632-492-11 PC BOARD, VOLUME C304 1-136-161-00 FILM 0.047MF 5% 50V
904 *1-632-490-11 PC BOARD, JACK C305 1-161-374-11 CERAMIC 0.00ISMF 30% 16V
905 *A-4617-301-A MOUNTED PCB, MAIN C306 1-164-159-11 CERAMIC 0.1MF 50V
906 1-575-002-11 WIRE, FLAT TYPE (22 CORE) C307 1-162-306-11 CERAMIC 0.01MF 20% 16V
$907. A,1-575-105-11 CORD, POWER C308 1-126-300-11 ELECT 0.47MF 20% 50V
908 *1-632-202-11 PC BOARD, LOADING C309 1-164-159-11 CERAMIC 0.1MF 50V
909 »*A-4617-161-A MOUNTED PCB, BD C310 1-164-159-11 CERAMIC 0.IMF 50V
910 1-575-001-11 WIRE, FLAT TYPE (12 CORE) C311 1-164-159-11 CERAMIC O.IMF 50V
911 A\.8-848-144-11 DEVICE, OPTICAL KSS-240A C312 1-164-159-11 CERAMIC 0.1MF 50V
C313 1-164-159-11 CERAMIC 0.1MF 50V
CAPACITOR C314 1-164-159-11 CERAMIC 0.1MF 50V
C315 =: 1-164-159-11 CERAMIC 0.1MF 50V
C101 1-163-038-00 CERAMIC CHIP O.IMF 25V C316 1-162-202-31 CERAMIC 13PF 5% 50V
C102 1-163-989-11 CERAMIC CHIP 0.033MF 10% 25V
C103 1-126-094-11 ELECT . 4.7MF 20% 16V C317 1-162-201-31 CERAMIC 12PF 5% 50V
C104 1-163-038-00 CERAMIC CHIP 0.1MF 25V C318 1-126-103-11 ELECT 470MF 20% 16V
C105 1-126-154-11 ELECT 47MF 20% 6.3V C319 1-126-103-11 ELECT 470MF 20% 16V
C320 1-130-481-00 MYLAR 0.0068MF 5% 50V
C106 1-126-154-11 ELECT 47MF 20% 6.3V C321 1-130-481-00 MYLAR 0.0068MF 5% 50V
C107 1-126-154-11 ELECT 47MF 20% 6.3V
C108 1-163-038-00 CERAMIC CHIP 0.1MF 25V C322 1~-130-475-00 MYLAR 0.0022MF 5% 50V
C109 1-163-038-00 CERAMIC CHIP 0.IMF 25V C323 1-130-475-00 MYLAR 0.0022MF 5% 50V
C110 1-163-989-11 CERAMIC CHIP 0.033MF 10% 25V C324 1-123-332-00 ELECT 47MF 20% 25V
C325 1-123-332-00 ELECT 47MF 20% 25V
Cili 1-131-367-00 TANTALUM 22MF 20% 16V C326 1-130-473-00 MYLAR 0.001ISMF 5% 50V
C112 1-164-232-11 CERAMIC CHIP 0.01MF 10% 50V
C113 1-164-232-11 CERAMIC CHIP 0.01MF 10% 50V C327 1-130-473-00 MYLAR 0.0015MF 5% 50V
C114 1-164-161-11 CERAMIC CHIP 0.0022MF 10% 50V C328 1-162-294-31 CERAMIC 0.001IMF 10% 50V
C115 1-164-161-11 CERAMIC CHIP 0.0022MF 10% 50V C329 1-164-159-11 CERAMIC 0.1MF 50V
C333 1-162-294-31 CERAMIC 0.001MF 10% 50V
C117 1-163-038-00 CERAMIC CHIP 0.1MF 25V C401 1~164-159-11 CERAMIC 0.1MF 50V
C118 1-163-038-00 CERAMIC CHIP 0.1MF 25V
C119 1-164-161-11 CERAMIC CHIP 0.0022MF 10% 50V C402 1-164-159-11 CERAMIC 0.1MF 50V
C120 1-163-989-11 CERAMIC CHIP 0.033MF 10% 25V C403 1-126-154-11 ELECT 47MF 20% 6.3V
C506 1-164-159-11 CERAMIC 0.1MF 50V
C151 1-163-019-00 CERAMIC CHIP 0.0068MF 10% 50V C551 1-126-023-11 ELECT 100MF 20% 16V
C152 1-163-038-00 CERAMIC CHIP 0.1MF 25V C552 1-126-023-11. ELECT 100MF 20% 16V
C153 1-163-006-11 CERAMIC CHIP 560PF 10% 50V
C154 1-164-161-11 CERAMIC CHIP 0.0022MF 10% 50V CN101 1-568-796-11 SOCKET, CONNECTOR 22P
C155 1-163-023-00 CERAMIC CHIP 0.01SMF 10% 50V CN102 1-568-795-11 SOCKET, CONNECTOR 12P
CN103 * 1-564-721-11 PIN, CONNECTOR (SMALL TYPE) 5P
C171 1-163-038-00 CERAMIC CHIP 0.1MF 25V CN301 * 1-564-707-11 PIN, CONNECTOR (SMALL TYPE) 5P
C172 1-163-038-00 CERAMIC. CHIP 0.1MF 25V CN401 1-535-799-11 JUMPER, FILM (WITH TERMINAL)
C173 1~163-038-00 CERAMIC CHIP 0.1MF 25V
C174 1-163-038-00 CERAMIC CHIP 0.1MF 25V CNP201 * 1-564-321-00 PIN, CONNECTOR 2P
C201 1-126-842-11 ELECT 4700MF 20% 16V CNP301 * 1-568-933-11 SOCKET, CONNECTOR 30P
CNP302 * 1-568-822-11 SOCKET, CONNECTOR 22P
C202 1-126-842-11 ELECT 4700MF 20% 16V CNP303 * 1-564-708-11 PIN, CONNECTOR (SMALL TYPE) 6P
C203 1-126-880-11 ELECT 100MF 20% 63V CNP401 * 1-564-339-00 PIN, CONNECTOR 5P
C204 1-126-059-11 ELECT 1OMF 20% 50V
C206 1-126-059-11 ELECT 10MF 20% 50V CNP551 * 1-564-708-11 PIN, CONNECTOR (SMALL TYPE) 6P
C207 1-124-045-00 ELECT 4.7MF 20% 50V
CP501 1-233-202-11 COMPOSITION CIRCUIT BLOCK
C208 1-126-059-11 ELECT 10MF 20% 50V
C209: 1-126-012-11 ELECT 470MF 20% 16V D101 8-719-105-72 DIODE RD4.7M-B1
C210 1-126-012-11 ELECT 470MF 20% 16V D201 = 8-719-200-82 DIODE 11ES2
C211 1-126-024-11 ELECT - 220MF 20% 16V D202 = 8-719-200-82 DIODE 11ES2
C212 1-126-024-11 ELECT 220MF 20% 16V D203 8-719-200-82 DIODE 11ES2
D204 8-719-200-82 DIODE 11ES2
C213 1-164-159-11 CERAMIC 0.1MF 50V
8-719-200-82 DIODE 11ES2
D205

Ref.No
D206
D207
D208
D209
D301
D401
D402
D403
D404
D405
D406
D407
D408
D409
D410
D411
D412
FLD401
1C101
1C102
iC 103
1C201
10202
1C301
1C302
1C303
10304
1C305
1C306
10307
1C401
1C-402
1C551
J101
J102
J401
J501
M101
M102
M191
Q101
0201
Q202
0203
Q204
Q205
Q206
Q301
Q302
0303
Q304
0305
Q306
Q308
0401
Q402
R101
R102
R103
R104
R105
Part No.
8-719-107-94
8-719-109-85
8-719-110-08
8-719-110-13
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-107-94
8-719-110-13
1-519-555-11
8-752-037-33
8-759-821-94
8-759-633-65
8-759-630-21
8-759-633-42
8-752-333-31
8-752-334-06
8-759-990-80
8-759-990~-58
8-759-990-58
8-759-945-58
8-759-977-71
8-759-150-28
8-749-920-83
8-759-981-89
1-216-295-00
1-216-295-00
1-566-921-11
1-568-519-21
X-4917-504-1
X-4917-523-1
A-4604-363-A
8-729-901-01
8-729-111-67
8-729-140-96
8-729-111-67
8-729-230-45
8-729-900-80
8-729-119~-76
8-729-115-77
8-729-900~65
8-729-115-88
8-729-115-88
8-729-115-88
8-729-115-88
8-729-115-77
8-729-900-45
8-729-900-45
Description
DIODE 188202-1
DIODE RD5.1ES-B2
DIODE RD8.2ES-B2
DIODE RD9.1ES-B2
DIODE 1$S202-1
DIODE 1$8202-1
DIODE 1$S202-1
DIODE 1$S$202-1
DIODE 1$$202-1
DIODE 1$$202-1
DIODE 1$8202-1
DIODE 1$8202-1
DIODE 1$$202-1
DIODE 1$S202-1
DIODE 1SS202-1
DIODE 1$S202-1
DIODE RD9.1ES-B2
INDICATOR TUBE, FLUORESCENT
IC CXA1372Q
IC LA6532M
IC M54641L
IC M5290P~-16
IC M5293L
iC CXD2500Q
iC CXD2551P
IC CXD8097S
IC AD1860N-T
IC AD1860N-T
iC RC4558P
IC GP-1F31T (DIGITAL OUT OPTICAL)
IC UPD75212ACW-206
iC GP1U52XB
IC RC4556S
METAL GLAZE 0 5%
METAL GLAZE 0 5%
JACK, PIN 2P (LINE OUT)
JACK, LARGE TYPE (PHONES)
1/10W
1/10W
MOTOR ASSY (SLED)
MOTOR ASSY (SPINDLE)
MOTOR (L) ASSY
TRANSISTOR DTC144EK
TRANSISTOR 25B1094-L
TRANSISTOR 28D774-34
TRANSISTOR 2SB1094-L
TRANSISTOR 2802458-YGR
TRANSISTOR DTC1I4ES
TRANSISTOR 2SA1175-HFE
TRANSISTOR DTC144ES
TRANSISTOR DTAI44ES
TRANSISTOR BAIL3Z-K
TRANSISTOR BAIL3Z-K
TRANSISTOR BAIL3Z-K
TRANSISTOR BAIL3Z-K
TRANSISTOR DTC144ES
TRANSISTOR DTC1I4EF
TRANSISTOR DTC114EF
RESISTOR
1-216-097-00
1-216-097-00
1-216-091-00
1-216-099~00
1-216-069-00
METAL GLAZE —100K 5%
METAL GLAZE —100K 5%
METAL GLAZE 56K 5%
METAL GLAZE =—-:120K 5%
METAL GLAZE 6.8K 5%
1/10W
1/10W
1/10W
1/10W
1/10W
Remarks
Ref.No Part No.
R106
R107
R108
R109
R110
R11
R112
R113
R114
R152
R153
R154
R155
R156
R157
R158
R159
R160
R171
R172
R173
R174
R201
R202
R203
R204
R205
R206
R207
R208
R209
~ R210
“Rall
R213
R301
R302
R303
R304
R305 |
R308
R309
R310
R311
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
R331
R332
R333
— Q
1-216-061-00
1-216-114-00
1-216-105-00
1-216-061-00
1-216-049-00
1-216-049-00
1-216-083-00
1-216-071-00
1-216-105-00
1-216-073-00
1-216-085-00
1-216-085-00
1-216-093-00
1-216-081-00
1-216-079-00
1-216-079-00
1-216-079-00
1-216-049-00
1-216-001-00
1-216-001-00
1-216-001-00
1-216-001-00
1-249-425-11
1-249-425-11
1-249-438-11
1-249-429-11
1-249~435-11
1-249-413-11
1-249-429-11
1-249-423-11
1-249-417-11
1-249-417-11
1~249-411-11
1-249-381-11
1-249-411-11
1-249-417-11
1-249~-417-11
1-249-417-11
1-249-417-11
1-249-423-11
1-249-423-11
1-249-429-11
1-249-429-11
1-249-441-11
1-249-417-11
1-249-417-11
1-249-417-11
1-249-411-11
1-249-411-11
1-249-411-11
1-249~-417-11
1-249-411-11
1-247-903-00
1-249-407-11
1-249-411-11
1-249-411-1]
1-249-411-11
1-249-413-11
1-249-417-11
1-249-417-11
1-249-417-11
1~-249~417-11
1-247-891-00
1-247-891-00
1-249-409-11
Description
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
METAL GLAZE
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
3.3K
510K
220K
3.3K
1K
1K
27K
8.2K
220K
10K
33K
33K
68K
22K
18K
18K
18K
IK
10
10
10
10
4.7K
4.7K
56K
10K
33K
470
10K
3.3K
IK
1K
330
1
330
1K
1K
1K
IK
3.3K
3.3K
10K
10K
100K
1K
1K
1K
330
330
330
1K
330
1M
150
330
330
330
470
1K
1K
1K
1K
330K
330K
220
5%
5%
5%
5%
CDP-790
Remarks
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
—1/10W
1/10W
1/10W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4w
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W

CDP-790
Ref.No Part No.
R334 = 1-249-409-11
R335 = 1-249-409-11
R336 = 1-249-409-11
R337: 1-249-414-11
R338 = 1-249-414-11
R341 =. 1-249-441-11
R345 = 1-249-405-11
R346 = 1-249-405-11
R347: 1-249-433-11
R348 = 1-249-433-11
R350 = 1-249-441-11
R351 = 1-249-429-11
R401 =: 1-249-435-11
R402. 1-249-435-11
R403. 1-249-435-11
R404 =. 1-249-425-11
R405 1-249-425-11
R406 =: 1-249-439-11
R551 1-249-417-11
R552: 1-249-417-11
R553: 1-249-423-11
R554 —s:1-249-423-11
R556 —s- 1-249-429-11
R557: 1-249-429-11
R558 1-249-402-11
R559 =: 1-249-402-11
RV101 1-238-016-11
RV102 1-238-016-11
RV551 = -1-238-487-11
$101 1-572-085-1211
$191 1-572-086-11
$192. 1-572-086~11
$401 1-571-305-11
$402. =: 1-554-303-21
$403: 1-554-303-21
$404 1~554-303-21
$405 = 1-554-303-21.
$406 =: 1-554~303-21
$407 1-554-303-21
$408 =: 1-554-303-21
$409 1-554-303-21
$410 1-554-303-21
$411 1-554-303-21
$412 1-554-303-21
$413 —-:1-554-303-21
$414: 1-§54-303-21
$415 1-554-303-21
$416 = 1-554-303-21
$417 1~554-303-21
$418 = 1-554-303-21
$419 = 1-554-303-21
$420 =: 1-554-303-21
$421 1-554-303-21
$422 1-554-303-21
$423 1+554-303-21
$424 1-554-303-21
$425 1-554-303~-21
3426 1-554-303-21
$427: 1-554-303-21
$428 =: 1-554-303-21
$429 1-554-303-21
$430: 1-554-303-21
$431 1-554-303-21
$432 1-554-303-21
9-953-941-11
Description Remarks Ref.No Part No. Description Remarks
CARBON 220 5% 1/4W $433 1-554-303-21 SWITCH, KEY BOARD (CLEAR)
CARBON 220 5% 1/4W $434 1-554-303-21 SWITCH, KEY BOARD (CHECK)
CARBON 220 «45% 1/4W S435 1-554-303-21 SWITCH, KEY BOARD (Il)
CARBON 560 5% 1/4W S436 1-554-303-21 SWITCH, KEY BOARD (ID)
CARBON 560 5% 1/4 $437 1-554-303-21 SWITCH, KEY BOARD (>)
CARBON 100K 5% 1/4W $438 1-554-303-21 SWITCH, KEY BOARD (4)
CARBON 100 5% = 1/4W S439 1-554-303-21 SWITCH, KEY BOARD (FADER)
CARBON 100 5% 1/4W $440 1-554-303-21 SWITCH, KEY BOARD (REPEAT)
CARBON 22K 5% 1/4W S441 1-554-303-21 SWITCH, KEY BOARD (PEAK SEARCH)
CARBON 22K 5% 1/4W $442 1-554-303-21 SWITCH, KEY BOARD (TIME)
CARBON 100K 5% 1/4W T901 A\.1-449-921-11 TRANSFORMER, POWER
CARBON 10K 5% 1/4W
CARBON 33K = 5%~—(OL/AW X301 1-567-926-11 VIBRATOR, CRYSTAL (16.9344MHz)
CARBON 33K = 5% /4W X401 1-577-082-11 VIBRATOR, CERAMIC (4MHz)
CARBON 33K = «5% ~—/4W ;
CARBON 47K 5% 1/4W
CARBON 47K 5% Wa ACCESSORIES AND PACKING MATERIALS
CARBON 68K 5% 1/4W KOKO KR RR RR RR KK KR
CARBON 1K 5% 1/4W
CARBON 1K 5% «1/4W
1-465-280-11 REMOTE COMMANDER (RM-D290)
CARBON 33K 5% = AW 1-559-533-11 CORD, CONNECTION
CARBON 3.3K 5% ~=—«1/4W 3-750-846-21 MANUAL, INSTRUCTION
CARBON 10K = 5% =—1/4W 4-923-540-01 CUSHION
eae 10K 5% AW 4-925-788-01 COVER, BATTERY (FOR RM-D290)
CARBON 56 5% 1/4W * 4-929-558-21 INDIVIDUAL CARTON
CARBON 56 5% 1/4W
RES, ADJ, CARBON 10K
RES, ADJ, CARBON 10K
RES, VAR, CARBON 20K/20K (PHONES LEVEL)
SWITCH, LEAF (LIMIT IN)
SWITCH, LEAF (LOAD OUT)
SWITCH, LEAF (LOAD IN)
SWITCH, PUSH (1 KEY) (POWER)
SWITCH, KEY BOARD (CONTINUE)
SWITCH, KEY BOARD (SHUFFLE)
SWITCH, KEY BOARD (PROGRAM)
SWITCH, KEY BOARD (1)
SWITCH, KEY BOARD (2)
SWITCH, KEY BOARD (3)
SWITCH, KEY BOARD (4)
SWITCH, KEY BOARD (5)
SWITCH, KEY BOARD (6)
SWITCH, KEY BOARD (7)
SWITCH, KEY BOARD (8)
SWITCH, KEY BOARD (9)
SWITCH, KEY BOARD (10)
SWITCH, KEY BOARD (11)
SWITCH, KEY BOARD (12)
SWITCH, KEY BOARD (13)
SWITCH, KEY BOARD (14)
SWITCH, KEY BOARD (15)
SWITCH, KEY BOARD (16)
SWITCH, KEY BOARD (17)
SWITCH, KEY BOARD (18)
SWITCH, KEY BOARD (19)
SWITCH, KEY BOARD (20)
SWITCH, KEY BOARD (TIME SET)
SWITCH, KEY BOARD (EDIT)
SWITCH, KEY BOARD ( KK)
SWITCH, KEY BOARD (DD )
SWITCH, KEY BOARD (44)
SWITCH, KEY BOARD (PP)
SWITCH, KEY BOARD (>20)
SWITCH, KEY BOARD (MULTI PROGRAM)
line with mark are critical for safety.
Replace only with part number specified.
Note: The vith mark. are ert by mark A or dotted
English
: 90C0431-1
Sony Corporation Printed in Japan
Audio Group © 1990.3
Published by Customer Relations and Service Group

SONYY.
SERVICE MANUAL
CDP- 790
US Model
CORRECTION-1
Correct your service manual as shown below.
iM : indicates corrected portion.
INCORRECT CORRECT
E-F Balance Check , E-F Balance Check
Procedure : Procedure :
2. Connect test point TP (ADJ) and TP (TES) to | 2.
ground with lead wire.
Connect test point TP (ADJ) to ground and TP
(TES) to TP (VC) with lead wire.
Focus/Tracking Adjustment Focus/Tracking Adjustment
4, Adjustment RV101 on BD board so that the | 4.
waveform is as shown in the figure below. (focus
gain adjustment)
. Adjust RV102 on BD board so that the waveform
is as shown the figure below. (tracking gain
adjustment)
Adjust RV102 on BD board so that the waveform
is as shown in the figure below. (focus gain
adjustment)
. Adjust RV101 on BD board so that the waveform
is as shown in the figure below. (tracking gain .
adjustment)
English
Sony Corporation 9110430-1
9-953-941-91 Audio Group
Printed in Japan
© 1991.9
Published by Customer Relations and Service Group