Manufactured under license from Dolby Laboratories Licensing
Corporation.
“Dolby”, the double-D symbol a and “Pro Logic” are trademarks
of Dolby Laboratories Licensing Corporation.
3-3. Back Panel Section ................................................... 47
4. ELECTRICAL PARTS LIST ........................................ 48
– 2 –
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 A C leakag e. 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.
1. A commercial leakage tester, such as the Simpson 229 or
RCAWT-540A. Follow the manufacturers’ 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 V OM
or battery-operated AC voltmeter. The “ limit” indication is
0.75V , so analog meters must ha ve 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
0.15µF
Fig. A. Using an AC voltmeter to check AC leakage.
1.5k
Earth Ground
voltmeter
(0.75V)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
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 PUBLISHED BY SONY.
! OR DO TTED LINE WITH
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
– 3 –
LOCATION AND FUNCTION OF CONTROLS
[FRONT PANEL]
1234 5 678
SECTION 1
GENERAL
This section is extracted from
instruction manual.
@¶@§ @∞@¢@£@™@¡@º!ª !•!¶!§ !∞ !¢!£!™!¡ 0 9
1DPC MODE button
2POWER switch
3SUR, TONE, INDEX indicators
4Digital processing control buttons
5Function indicators
6DIRECT PASS indicator
75.1 INPUT indicator
8MASTER VOLUME control
9BALANCE control
!ºBASS BOOST button/indicator
!¡SOUND FIELD ON/OFF button
!™MODE button
!£GENRE button
!¢DIRECT PASS, SET UP, 5.1/DVD INPUT buttons
1 LEARN button/indicator
2 SLEEP button
3 TV CONTROL ON button
4 Numeric, ENTER buttons
5 BACKGROUND button
6 VCR/CD/DVD control buttons
7 SOUND FIELD buttons
8 DIRECT button
9 DPC MODE button
0 DIGITAL PROCESSING CONTROL buttons
!¡ VISUAL POWER button
!™ SYSTEM OFF button
!¡
!™
!£
!¢
!∞
9
8
0
p
rP
!§
!¶
!•
!ª
@º
@¡
@™
@£
!£ SYSTEM CONTROL/FUNCTION buttons
!¢ 5.1/INPUT button
!∞ TV/VIDEO button
!§ Direct TUNING button
!¶ CH/PRESET button
!• TEST TONE button
!ª CENTER LEVEL +, – buttons
@º REAR LEVEL +, – buttons
@¡ MASTER VOL buttons
@™ MUTING button
@£ BASS BOOST button
9STEREOIStereo detect signal input.
10IF DATA INIIF data input.
11VSS (D)–Ground.
12V-AOVideo switch control output.
13V-BOVideo switch control output.
14RM INPUTIRemote control signal input.
15V-EOVideo switch control output.
16V-INH–Not used (Open).
17LED DATAOLED data output.
18LED CLROLED clock signal output.
19S. POWERIPower switch input.
20RX (SIN)–Not used (Fixed at “ L ” )
21TX (SOUT)–Not used (Open).
22BUSY–Not used (Open).
23FL CLEAROFL reset signal output.
24FL DATAOFL data output.
25FL CLKOFL clock output.
26FL LATOFL latch signal output.
27––––––Not used (Ground).
28VCC(A)–Analog power supply (+4.9V).
29 + AVR–Connect to VDD (+5.1V).
30 – AVR–Not used (Ground).
31GND (D)–Ground.
32AD KEY IN1IKey input.
33AD KEY IN2IKey input.
34VSS(D)–Ground.
35AD KEY IN3IKey input.
36AD KEY IN4IKey input.
37AD KEY IN5IKey input.
38AD VERSIONIModel select.
39VOL +OVolume up control output.
40VOL –OVolume down control output.
41MODE0–Not used (Fixed at “ H ” )
42MODE1–Not used (Fixed at “ H ” )
43MODE2–Not used (Ground).
44STANDBY–Connect to VDD (+5.1V).
45STOPOPower ON/OFF control output.
– 6 –
Pin No.Pin nameI/ODescription
46LERNING LED–Not used (Open).
47––––––Not used (Ground).
48––––––Not used (Ground).
49CTR A INIControl S signal input (DE715 : US, Canadian model).
50STANDBY LED–Not used (Open).
51VOL LEDOVolume LED drive.
52S-OUTOControl S signal output (DE715 : US, Canadian model).
53CTR A OUTOControl S signal output (DE715 : US, Canadian model).
54VIDEO1 (M-BUS)OVIDEO1 control signal output.
55VIDEO2 (M-BUS)OVIDEO2 control signal output.
56TV (M-BUS)OTV control signal output.
57–––––Not used (Ground).
58SP OFF INISpeaker switch input.
59SIGNAL IN–Not used (Ground).
60–––––Not used (Ground).
61–––––Not used (Ground).
62RESETIReset terminal.
63VSS(D)–Ground.
64XOOSystem clock (4.19MHZ).
65XIISystem clock (4.19MHZ).
66VCC(D)–Digital power supply (+4.9V).
67–––––Not used (Ground).
68POWER RYOPower relay drive.
69BRIDGE RY–Power key input.
70SUR RYOSurround relay drive.
71CENTER RYOCenter relay drive.
72FRONT RY (H,P)OFront (Headphone) relay drive.
73MIX/SUB RYOWoofer relay drive.
744/8 IN–Not used (Ground).
75PROTECT INIProtector operation input.
76DIRECT PASSODirect pass relay drive.
77BASS BOOSTOBass boost ON/OFF control.
78F/C/W MUTEOFront, Center, Woofer mute drive.
79SL MUTEOSurround L-CH mute drive.
80SR MUTEOSurround R-CH mute drive.