Sony CDP-997 - Compact Disc Player User manual

SERVICE MANUAL
CDP-997
US Model
AEP Model
Model Name Using Similar Mechanism | CDP-597
CD Mechanism Type CDM14-5BD8A
Compact disc player
Frequency response
Signal to noise ratio
Dynamic range
Harmonic distortion
Channel separation
Outputs
LINE OUT (FIXED)
(phone jacks)
LINE OUT (VARIABLE)
(phone jacks)
DIGITAL OUTPUT
(OPTICAL)
(optical output
connector)
HEADPHONES
(stereo phone jack)
General
Power requirements
Power consumption
: ty
H
MICROFILM
Optical Pick-Up Block Type BU-5BD8A
SPECIFICATIONS
2 Hz-20 kHz +0.3 dB
More than 115 dB
More than 100 dB
Less than 0.0025%
More than 110 dB
Output level 2 V (at 50 kilohms,
non DSP mode)
Load impedance over 10 kilohms
Output level max. 2 V
(at 50 kilohms, non DSP mode)
Load impedance over 50 kilohms
Wave length 660 nm
Output level —18 dBm
Output level max. 28 mW
Load impedance 32 ohms
120 V AC, 60 Hz
17 W
Dimensions Approx. 430 x 110355 mm
(w/h/d)
(17 X 43/3 x 14 inches)
Including projecting parts and
controls
Weight Approx. 4.6 kg (9 Ibs 15 oz)
Remote commander (RM-D997)
Remote control system Infrared control
Power requirements 3 V DC with two batteries size
AA (IEC designation R6)
Dimensions Approx. 62x 18175 mm
(w/h/d)
(21/5 X 23/39 X7 inches)
Weight 135 g (4.6 0z)
Including batteries
Supplied accessories
Connecting cord (1)
(2 phono plugs <> 2 phono plugs).
Remote commander (1)
Sony SUM-3(NS) batteries (2)
— Continued on next page —
COMPACT DISC PLAYER
SONY.

CDP-997 |
Optional accessory
Audio
optical
connecting
cord
POC-15
j
Design
and specifications
are
subject
to
change
without
notice.
TABLE OF
CONTENTS
Section
Title
Page
Section
Title
Page
1.
GENERAL
6.
EXPLODED
VIEWS
1-1.
Identifying
the
Parts-+++++++++ereseetereeeeeeeeeeeeescreereeceneesecneaan
eee
4
6-1.
Operation
Assembly
srrrsterseesseseeesensseeeseeeeseeseetesensene
essen
ees
35
6-2.
Main
Assembly
-s++r++esseeeeeteeeeeercecencsecnaseeeneeasscoeesaaeerennns
36
2.
DISASSEMBLY.
.------:-cecescecectcececcecccevececcscccasererecsacens
6
6-3.
MD
Assembly
(CDM-SBDBA)++rrserrersstessessereerseesenssennerscees
37
6-4.
Optical Pick-up
Block
Assembly
(BU-SBD8) -++++++++++-seeeseeeeeees
38
3.
IC
PIN
FUNCTIONS
«0-0-0
:-eesessceescneccnseseeececccesseeeneees
7
7.
ELECTRICAL
PARTS
LIST
-::----:---:::-sssscsescceeeeesseees
39
4.
ELECTRICAL
BLOCK CHECKING
------------:eesseeeeeeees
17
5. DIAGRAMS
5-1, Block Diagram ++++ssssecesesseseeeesrceessseneserssecesesseeeeenseeeeeses
5-2, Printed Wiring Boards
5-3. Schematic Diagram -+++-+++-+++2eeeeeeeeeeeeeeeeeee eee eeeeeeeeeeeeeeeeeees
© IC Block Diagrams:+++++++ssseeererreeeteeetsereeeseeasaeereeeeeseeees 32
© Semiconductor Lead Layouts ++++++ssssssereeeeeeeeeeteeeeseeeseeeees 34
WARNING !!
AN ISOLATION TRANSFORMER SHOULD BE USED
DURING
ANY
SERVICE
TO
AVOID
POSSIBLE
SHOCK
:
HAZARD,
BECAUSE
OF
LIVE
CHASSIS.
:
THE
CHASSIS
OF
THIS
RECEIVER
IS
DIRECTLY
CON-
;
NECTED
TO
THE
AC
POWER
LINE.
SAFETY-RELATED
COMPONENT
WARNING
!!
:
COMPONENTS IDENTIFIED BY SHADING AND MARK
ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS 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.

CDP-997
(CHECKING METHODS OF LASER DIODE AND FOCUS SAFETY CHECK-OUT
SEARCH OPERATIONS)
¢ Tum the power switch ON with the condition of the disc table
closed without disc. And then watch the objective lens to
check whether the operation can be performed or not, as the
below figure shows.
After correcting the original service problem,
perform the following safety checks 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.
Front panel side
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.
@
The
laser
beams
diffused
can
be
observed.
1.
A
commercial
leakage
tester,
such
as
the
© The up and down movements of the objective lens (Twice) Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these instru-
ments.
2. A battery-operated AC milliammeter. The Data
NOTES
ON
HANDLING
THE
OPTICAL
PICK-
acta
245
digital
multimeter
is
suitable
for
UP
BLOCK
OR
BASE
UNIT
Is
Job.
3. Measuring the voltage drop across a resistor by
The laser diode in the optical pick-up block may means of a VOM or battery-operated AC volt-
suffer electrostatic breakdown because of the poten- meter. The “‘Jimit” indication is 0.75V, so
tial difference generated by the charged electrostatic 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)
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.
To
Exposed
Metal
Parts on Set
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
AC
diode
emission,
observe
from
more
than
30cm
away
from
the
aa
mer
objective lens.
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

CDP-997 |
1-1. IDENTIFYING THE PARTS
Front Panel
SECTION 1 This section is extracted from
GEN ER AL instruction manual.
3| [4] [5] [6] [7] [8] [9} [10] [14] 12] [13] [14] [15]
31 (30 29
-—
28] [27]
[17] [16
19} [18]
26| [25] [24] [23] [22] [21] [20
POWER switch
Disc tray
= OPEN/CLOSE button
PLAY MODE buttons
CONTINUE button and indicator
SHUFFLE button and indicator
PROGRAM button and indicator
C. (custom) INDEX button and indicator
PEAK SEARCH button
ERASE (memory erase) button
FILE (custom file) button
DSP/1-20 button and indicator
FILE RECALL button
A.SPACE/A.CUE button
Numeric buttons/DSP SELECT button
> 20 (over 20)/FLAT button
CHECK (program check) button
EFFECT level
CLEAR (program clear) button
alely|=)
falzlelselelelelslolo)
16) LINE OUT/PHONE LEVEL control
PHONES jack
LEVEL FILE button
I< PI AMS* buttons
<< >> (manual search) DISC MEMO buttons
@ (stop) button
EDIT/TIME FADE button
23, Il (pause) button and indicator
24 FADER (fade in/fade out) button
REPEAT button
> (play) button and indicator
TIME/MEMO button
MUSIC SCAN button
Display window
Remote sensor
TIMER switch
* AMS is the abbreviation of Automatic Music Sensor.

| CDP-997
Remote Commander
_@= OPEN/CLOSE button
FILE RECALL button
DISPLAY MODE button
MUSIC SCAN button
[5] Numeric buttons
[6] MEMO INPUT button
FILE (custom file) button
ERASE button
DSP SELECT button
DSP FLAT button
LEVEL FILE button
FADER (fade in/fade out) button
[14] <4<q p> (manual search) buttons
LINE OUT LEVEL (line out/headphone level) buttons
<< »P SLOW (low speed manual search) buttons
4— —& INDEX buttons
i PPI AMS buttons
i (stop) button
IE (pause) button
> (play) button
A. SPACE (auto space)/A. CUE (auto cue) button
REPEAT button (repeat/A — B repeat clear) button
TIME button
>20 (over 20) button
CLEAR button
CHECK button
(22) PLAY MODE buttons
CONTINUE button
SHUFFLE button
PROGRAM button
C (custom). INDEX button
[1
[2]
[3]
[4]
A
[>] [@] (3) fe) [&) [>] [e] is) (4)
(ss) [S} [3] [3]
EBisiels) Glass)
Buttons with orange letters (A, B, C, ....... ) are for entering
| a disc memo (page 26).
le eK Bet lel a Pal te

CDP-997 |
SECTION 2
DISASSEMBLY
¢ In order to remove the front panel block when the power
supply does not turn on, rotate the cam with minus
screw-driver as the figure shows, and the loading part will be
moved.
Then pull out the loading part by your hand to remove the
loading panel as the figure shows. After that take out the front
panel block.
Bottom of chassis
@ Rotate the cam with a © screwdriver
in the direction of the arrow.
© Remove the loading panel
in the direction of the arrow.
@ Pull out the disc table.
Wet ae,

e 10342 (CXD2561M-1)
Pin No. | Symbol | I/O Description
SECTION 3
IC PIN FUNCTIONS
Digital power supply
Test pin
Normally fixed to “L”
2
Re-synchronizes at rising edge 3
¢ 1€341 (CXD2560M)
[Pinwe. [Symbol] VO | Description
[i [vs
SYSM
I
ATT
CTL
17 |MCLK | 1 |
INIT
Re-synchronizes at rising edge
of this signal.
BCK input
LRCK input
| CDP-997
Power supply pin (GND)
System mute input
“H”: active
CTL “L”: ATT data input
CTL “H”: EMP input
CTL “L”: shift clock input
CTL “H”: FS32 input
CTL “L”: latch clock input
CTL “H”: FS48 input
Pull-down within IC
“H”: direct input mode.
“L”: serial transfer mode.
Test pin
Normally fixed to “L”
Master clock input (f=512 Fs)
Power supply pin (+5V)
O | BCK output
Lch data output
2 INTE : of this signal.
a [eRe ae
5 DATAR I Rch data input
6 DATAL I Lch data input
. 5 LATCH
a
[8 [pve [= [Digit GND
Crystal oscillation input pin
ac es
(22.5 MHz) | 9 |
| 10
Substrait
i VSUB ~ | Connected to GND a f
v
Pie
PRG)
[0
|
Reh
PLM
output
|
Ginphase)
|
18 [ RIG) | O | Reh PLM output nia) |
19 [RO@) [0 | Reh PLM oupur2 (phase) |
20 | R2) | 0 | Reb PLM oupur 2 (aniphasey | [17 |
23 L2(-) | O | Leh PLM output 2 (antiphase) 20°.
24 Leh PLM output 2 (in-phase)
25 po Lch PLM output | (antiphase)
26 Analog GND
27 FL) [0 Leh PLM ouput Gass) |
[28 [avoot [= [Aratog powersupnly |
1 DR O
72 [ ERCKO | 0
| 23 | FLGL [| oO | Leh ¢ mute flag output
[24 ruGR [0 [Reh mute Mag oust |
Rch data output
LRCK output

CDP-997 |
e 1C901 (CXD2701Q)
[PinNo. | Symbot_| VO |
ee a
ee ee
Description
Input
data
format
setting
pin.
Data
position
is
changed
according
to
“H”
and
“L”.
Input
data
format
setting
pin.
“H”:
MSB
first,
“L”:
LSB
first
Serial
data
input
pin
of
1
sampling
2
channels.
Data
format:
two’s
complement
Serial bit clock input pin of serial input data
Sampling
frequency
clock
input
pin
of
serial
I/O.
Transfers
Lch
data
at
“H”
and
Rch
data
at
“L”,
GND
pin
Serial
data
output
pin.
Data
format:
two’s
complement.
Bit clock output pin. 64-slot.
Sampling frequency clock output pin of serial data
Output data bit number setting pin
BS2=H, BS1=H 24-bit
BS2=H, BS1=L 20-bit
BS2=L, BS1=H 18-bit
BS2=L, BS1=L 16-bit
Output data format setting pin. “H”: MSB first, “L”: LSB first
GND pin
System clock output pin. fsck=fxt=512 fs
Output pin of crystal oscillation circuit
Input pin of crystal oscillation circuit. fxt=512 fs
pi
[
voor
[=
[asvpowerpin
os
00
20”
[cas
[0
|
Baema
DRAM
column
ares
stobe
cuiuipia”
21
|
Wo.
[v0
|
exemal
DRAM
dea
inpuvouput
02S
21
22 1/01 1/O | External DRAM data input/output 1/O1
External DRAM write enable output pin. “L”: active
24 AO | Oo | External DRAM address output AO
25
RAS
O
|
External
DRAM
low
address
strobe
output
pin
26
Al
O
External DRAM address output Al
a7 [a2 | oO |
External DRAM address output A2
Test pin. Normally fixed to GND.
Test pin
+5V power pin
Serial
data
input
pin
where
commands,
coefficient,
and
controls,
etc.
are
transferred
from
microprocessor.
see

¢ 1C301 (M38063M6)
Pin No.
[i _[pspvor [1]
a"
GAINI
1 CNIN
1
3 VOLLED O
4 VOLDWN O
5 VOLUP O
6 LODOUT O
7 LODIN O
0
0
0
14
5.
6
LDON
Symbol
|
| CDP-997
DSP effect level input
Volume level input
Volume LED
Remote control volume down output
Remote control volume up output
Loading-out output
Loading-in output
IC901 (CXD2701) data latch pulse output
1C901 (CXD2701) data clock output
IC901 (CXD2701) data output
No connection
Analog gain control 3
Analog gain control] 2
Analog gain control 1
Track jump number count signal input
Laser diode ON/OFF output
17 FOK
GFS
SENSE
NC
18
19
20
25
26
30 XIN =
32 GND =
D7
l/O
VO
1/0
1/0
FOK monitor input
GFS monitor input
SENSE input of IC331 (CXD2500) and IC101 (CXD2501)
No connection
Subcode read out clock output
No connection
Subcode data input
SCOR input
No connection
GND
Reset input
Test mode pin
Test mode pin for electrical adjustment
Clock input
Clock output
GND
64K-SRAM data input/output 7
64K-SRAM data input/output 6
64K-SRAM data input/output 5
64K-SRAM data input/output 4
64K-SRAM data input/output 3
1/0
1/0
39 D1
P40 | po |
64K-SRAM data input/output 2
64K-SRAM data input/output 1
64K-SRAM data input/output 0

CDP-997 |
| Pin No. | Symbol
41
Description
No connection
No connection
64K-SRAM write enable output
64K-SRAM address 12
64K-SRAM address 11
64K-SRAM address 10
O 64K-SRAM address 9
O
64K-SRAM address 8
64K-SRAM address 7
64K-SRAM address 6
64K-SRAM address 5
64K-SRAM address 4
64K-SRAM address 3
64K-SRAM address 2
64K-SRAM address 1
64K-SRAM address 0
Command output pulse
55 | Al
56 | AO
57 _[ arnt
58 | MF
SACK
60 MREQ
61 CMD3
62 CMD2
63 CMD1
64 CMDO
65 XLT
LK
‘Oo
Cc
Data
clock
output
of
IC331
(CXD2500)
and
IC101
(CXD2501)
1/O_| Master/file command select input/output
Oj} Command acknowledge output
Command request input
I/O | Master microprocessor interface 3
1/O_ | Master microprocessor interface 2
Master microprocessor interface |
1/0
1/O | Master microprocessor interface 0
Data
latch
pulse
output
of
IC331
(CXD2500)
and
IC10}
(CXD2501)
66
67 DATA
68
O
O__|
Data
output
of
IC331
(CXD2500)
and
IC101
(CXD2501)
O
|
Coefficient
data
read
out
clock
output
of
IC101
(CXD2501)
Direct
control
pin
(not
used)
of
IC101
(CXD2501)
Attenuation data output of IC341 (CXD2560)
Attenuation
data
clock
output
of
IC341
(CXD2560)
Attenuation
data
latch
pulse
output
of
IC341
(CXD2560)
+5V
Audio mute output
Digital mute output
No connection
Loading in-switch input
Loading out-switch input