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Extracted text from sony pcm r 700 service manual (Ocr-read)
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Output connectorsAnalog Output
OutputRated
Load
Connector Type
impedanceoutput
impedance
level a)
ANALOG Phono-plug
1 kilohm Ð12 dBs 47 kilohms
(UNBALANCE) jack
ANALOG XLR-3 100 ohms+4 dBs
10 kilohms
(BALANCE) (MALE) (balanced)(factory
or more
setting)
PHONESStereo phone-
100 ohms 0.36 mW 32 ohms
plug jack
Digital Output
OutputRated
Load
Connector Type
impedanceoutput
impedance
level
AES/EBUXLR-3 35 ohms
Ð 110 ohms
(MALE) (balanced)
COAXIALPhono-plug
75 ohms 0.5V p-p 75 ohms
jack
Variable range of analog (BALANCE) input/output reference level
a)
+4 dBs to Ð12 dBs
Maximum analog (BALANCE) output level
+24 dBs
Remote switch connectors
DIN connector (8-pin, parallel)
Monaural minijack (serial)
Audio characteristics
Frequency response
b) Standard: 20-20,000 Hz (±0.5 dB)
Long-play: 20-14,500 Hz (±0.5 dB)
Signal-to-noise ratio
b) 90 dB or more
(20 kHz LPF, A-weight filter ON)
Totalharmonic distortion
b)Standard: 0.05% or less
Long-play: 0.3% or less
(1 kHz, Reference level
a) 20 kHz LPF
ON)
Wow and flutter Below measurable limit (± 0.001 % W.
PEAK)
a) The reference lebel corresponds to Ð20 dB on the peak level meters.
b) During analog input sith the SBM function off
Supplied accessories AC power cord (1)
Remote commander (remote) RM-D757
(1)
Size-AA (R6) batteries (2)
Screws (M5 ´ 12) (4)
Decorative washers (4)
Operating instructions (1)
Warranty card (U.S.A. and Canadian
models only) (1)
Design and specifications are subject to change without notice.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer.
Discard used batteries according to the manufacturerÕs instructions.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig hŒndtering.
Udskiftning mŒ kun ske med batteri
af samme fabrikat og type.
LevŽr det brugte batteri tilbage til leverand¿ren.
ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type
anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
VARNING
Explosionsfara vid felaktigt batteribyte.
AnvŠnd samma batterityp eller en ekvivalent typ som
rekommenderas av apparattillverkaren.
Kassera anvŠnt batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi rŠjŠhtŠŠ, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
HŠvitŠ kŠytetty paristo valmistajan ohjeiden mukaisesti. Flexible Circuit Board Repairing
·Keep the temperature of the soldering iron around 270 û C during
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.
SERVICING NOTES
MODEL IDENTIFICATION
Ð Model Number label (Printed in Back Panel) Ð
MODEL NO. PCM-R700
DIGITAL AUDIO RECORDER
US, Canadian model : AC 120 V 60 Hz 34 W
AEP, UK Model : AC 230 V Ú 50/60Hz 34 W
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1.5 k W 0.15 µF AC
voltmeter
(0.75 V) To Exposed Metal
Parts on Set
Earth Ground
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, ÒmetallizedÓ 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 0.5 mA (500 microampers). Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturersÕ instructions to use these
instruments.
2. 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 voltmeter. The ÒlimitÓ 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 pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
TABLE OF CONTENTS
1. GENERAL
..................................................................... 4
2. DISASSEMBLY ............................................................ 18
3. ADJUSTMENTS .......................................................... 22
4. DIAGRAMS
4-1. Block Diagrams
Ð Digital Audio Section Ð .................................................. 29
Ð Analog Audio Section Ð .................................................. 31
Ð System Control Section Ð ............................................... 33
Ð Power Section Ð .............................................................. 35
4-2. Printed Wiring Board Ð RF Section Ð ................................ 40
4-3. Schematic Diagram Ð RF Section Ð ................................... 43
4-4. Printed Wiring Boards Ð MD Section Ð ............................. 46
4-5. Schematic Diagram Ð MD Section Ð ................................. 49
4-6. Printed Wiring Boards Ð DIGITAL Section Ð ................... 53
4-7. Schematic Diagram Ð DIGITAL Section Ð ........................ 57
4-8. Schematic Diagram Ð AUDIO Section Ð ........................... 61
4-9. Printed Wiring Boards Ð AUDIO Section Ð ....................... 65
4-10. Printed Wiring Boards Ð DISPLAY Section Ð ................... 69
4-11. Schematic Diagram Ð DISPLAY Section Ð ....................... 73
4-12. IC Pin Function Description .............................................. 76
5. EXPLODED VIEWS ................................................... 88
6. ELECTRICAL PARTS LIST .................................... 96
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.ATTENTION AU COMPOSANT AYANT RAPPORT
Ë LA SƒCURITƒ!
LES COMPOSANTS IDENTIFIƒS PAR UNE MARQUE !
SUR LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE
DES PIéCES SONT CRITIQUES POUR LA SƒCURITƒ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIéCES SONY DONT LES
NUMƒROS SONT DONNƒS DANS CE MANUEL OU
DANS LES SUPPLƒMENTS PUBLIƒS PAR SONY.