Service Note - Sony STR-DA4ES Service Manual

STR-DA4ES/DA7ES/VA333ES
QQ
3 7 63 1515 0
DTS Decode Test
• Required Instrument
CD player (equipped with optical digital output)
Optical cable
DTS test CD (J-2501-154-A)
Connection:
1 CD player
5 DTS test CD (Music Demonstration and Set Up Disc)
Procedure:
1. Set the FUNCTION of the receiver to the CD position and con-
firm that " [OPTICAL] " and "CD" appear on the display.
2. Insert the DTS test CD into the CD player and play the CD.
3. About three seconds later, confirm that the receiver recognizes
the optical signal and that the "DTS" and "dts [3/2]" are appear
on the display. Confirm also that MULTI CHANNEL DECOD-
TE
L 13942296513
ING (blue lamp) flashes on the front panel.
Music Demonstration
Track No.
Seal : "Prayer for the Dying"
1
Andrew Litton conducting
2
The Dallas Symphony Orchestra & Chorus:
Excerpt from Tchaikovsky: "1812 Overture"
Alan Parsons with Christopher Cross: "So Far Away"
3
Shoelss Joe: "The Bet"
4
TELARC: "A Touch of Surround Madness"
5
Note: Be careful about an electrical shock caused by remains of electrical potential.
The following parts on DC board have the +B or -B electrical potential.
Heat sink for rectifier diodes D801.
Aluminium case of smoothing capacitor C803, 804.
The 40-60V electrical voltage remains in C803, 804 when the power turns off.
Be sure to discharge in the following manner before servicing.
Discharging
1. Pull out the power cord from the wall outlet.
2. Connect 330 ohm 2W resistors between the heat sinks
for CNP803 1pin and 4pin and chassis individually.
3. Check the electrical potential drops fully, then start
servicing.
www
.
8
http://www.xiaoyu163.com
SECTION 1

SERVICE NOTE

3 Optical input
2 Optical
digital output
Time
Contents
5'40"
4'16"
4'08"
3'29"
6'42"
x ao
y
i
http://www.xiaoyu163.com
8
4 Receiver STR-DA3ES/DA5ES/VA555ES
Set-Up
Track No.
6 1 kHz sine (All channels)
Level Adjustment and Harmonic Distortion Analysis
7 100 Hz sine (All channels)
Verification of Signal and Subwoofer Testing
8 C-Weighted Pink Noise-Left Front Channel
9 C-Weighted Pink Noise-Center Channel
Q Q
10 C-Weighted Pink Noise-Right Front Channel
3 6 7 1 3
11 C-Weighted Pink Noise-Right Rear Channel
12 C-Weighted Pink Noise-Left Rear Channel
13 C-Weighted Pink Noise-Subwoofer (LEE)
14 C-Weighted Pink Noise-All Channels
15 10 Hz to 20 kHz Sine Sweep
An "All Channel" Frequency Response Test
16 20 Hz to 160 Hz sine sweep
A "Subwoofer" Low Frequency Response Test
* Track numbers from 8 to 14 are for Room Equalization and Channel Iden-
tification.
D801
u163
C803
.
CNP803 1
+B
DC BOARD (COMPONENT SIDE)
2 9 9 4 2 8
Contents
1 5 0 5 8 2 9 9 4
330 Ω 2W
(CHASSIS)
m
co
C804
4
-B
9 9
Time
1'00"
1'00"
1'00"
2'00"
2'00"
2 8 9 9
2'00"
2'00"
2'00"
2'00"
2'00"
2'00"