Sony STR-DA7ES - Fm Stereo/fm-am Receiver User manual

US Model
Canadian Model
STR-DA4ES/DA7ES
AEP Model
E Model
STR-VA333ES
SPECIFICATIONS
Photo: STR-VA333ES
This receiver incorporates Dolby* Digital and Pro Logic Surround
and the DTS** Digital Surround System.
* Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories.
** “DTS”, “DTS-ES Extended Surround” and “Neo: 6” are
trademarks of Digital Theater Systems, Inc.
STR-DA4ES/DA7ES
AUDIO POWER SPECIFICATIONS
POWER OUTPUTAND TOTAL
HARMONIC DISTORTION:
With 8 ohm loads, both channels driven, from
20 – 20,000 Hz; rated DA4ES: 110, DA7ES: 120
watts per channel minimum RMS power, with no
more than 0.05 % total harmonic distortion from
250 milliwatts to rated output.
AMPLIFIER SECTION
POWER OUTPUT
Rated Power Output at Stereo Mode
(8 ohms 20 Hz – 20 kHz, THD 0.05 %)
STR-DA7ES: 120 W + 120 W
STR-DA4ES: 110 W + 110 W
(4 ohms 20 Hz – 20 kHz, THD 0.09 %)
STR-DA7ES: 100 W + 100 W
STR-DA4ES: 90 W + 90 W
Reference Power Output
(8 ohms 20 Hz – 20 kHz, THD 0.05 %)
STR-DA7ES: FRONT 1) : 120 W + 120 W
CENTER 1) : 120 W
SURR 1) : 120 W + 120 W
SURR BACK 1) : 120 W + 120 W
STR-DA4ES: FRONT 1) : 110 W + 110 W
CENTER 1) : 110 W
SURR 1) : 110 W + 110 W
SURR BACK 1) : 110 W + 110 W
(4 ohms 20 Hz – 20 kHz, THD 0.09 %)
STR-DA7ES: FRONT 1) : 100 W + 100 W
CENTER 1) : 100 W
SURR 1) : 100 W + 100 W
SURR BACK 1) : 100 W + 100 W
STR-DA4ES: FRONT 1) : 90 W + 90 W
CENTER 1) : 90 W
SURR 1) : 90 W + 90 W
SURR BACK 1) : 90 W + 90 W
1) Depending on the sound field settings and the
source, there may be no sound output.
STR-DA4ES/DA7ES/VA333ES
Ver 1.0 2002. 07
SERVICE MANUAL
– Continued on next page –
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-874-082-01
2002G0400-1
© 2002. 07
FM STEREO FM-AM RECEIVER

2
STR-DA4ES/DA7ES/VA333ES
Frequency response
PHONO RIAA equalization curve
±0.5 dB
CD/SACD, TAPE, 10 Hz – 100 kHz
MD/DAT, TV/SAT, +0.5/–2 dB (with sound
DVD/LD, VIDEO 1, 2, field, equalizer, and bass
3boost bypassed)
Inputs (Analog)
PHONO Sensitivity: 2.5 mV
Impedance: 50 kilohms
S/N 2) : 86 dB (A, 2.5 mV 3) )
MULTI CHANNEL Sensitivity: 150 mV
IN 1, 2, CD/SACD, Impedance: 50 kilohms
TAPE, MD/DAT, S/N 2) : 100 dB
DVD/LD, TV/SAT, (A, 150 mV 3) )
VIDEO 1, 2, 3
2) INPUT SHORT.
3) Weighted network, input level.
Inputs (Digital)
CD/SACD, DVD/LD Sensitivity: –
(Coaxial) Impedance: 75 ohms
S/N: 100 dB
(A, 20 kHz LPF)
CD/SACD, DVD/LD, Sensitivity: –
TV/SAT, Impedance: –
MD/DAT (Optical) S/N: 100 dB
(A, 20 kHz LPF)
Outputs
TAPE, MD/DAT Voltage: 150 mV
(REC OUT), VIDEO Impedance: 10 kilohms
1, 2 (AUDIO OUT)
FRONT L/R, Voltage: 2 V
CENTER, Impedance: 1 kilohms
SURROUND L/R,
SURROUND BACK L/R,
SUB WOOFER
EQ
BASS: 99 Hz~1.0 kHz
(21 steps)
MID (FRONT L/R, CENTER only):
198 Hz~10 kHz
(36 steps)
TREBLE: 1.0 kHz~10 kHz
(23 steps)
Gain levels: ±10 dB, 0.5 dB step
FM TUNER SECTION
Tuning range 87.5 - 108.0 MHz
Antenna terminals 75 ohms, unbalanced
Sensitivity
Mono: 18.3 dBf, 2.2 µV/75 ohms
Stereo: 38.3 dBf, 22.5 µV/75 ohms
Usable sensitivity 11.2 dBf, 1 µV/75 ohms
S/N
Mono: 76 dB
Stereo: 70 dB
Harmonic distortion at 1 kHz
Mono: 0.3%
Stereo: 0.5%
Separation 45 dB at 1 kHz
Frequency response 30 Hz – 15 kHz,
+0.5/–2 dB
Selectivity 60 dB at 400 kHz
AM TUNER SECTION
Tuning range
With 10-kHz tuning scale: 530 – 1710 kHz 4)
With 9-kHz tuning scale: 531 – 1710 kHz 4)
Antenna Loop antenna
Usable sensitivity 50 dB/m (at 1,000 kHz or
999 kHz)
S/N 54 dB (at 50 mV/m)
Harmonic distortion 0.5 % (50 mV/m,
400 kHz)
Selectivity
At 9 kHz: 35 dB
At 10 kHz: 40 dB
4) You can change the AM tuning scale to 9 kHz or 10 kHz. After
tuning in any AM station, turn off the receiver. Hold down
TUNING + and press ?/1 . All preset stations will be erased
when you change the tuning scale. To reset the scale to
10 kHz (or 9 kHz), repeat the procedure.
VIDEO SECTION
Inputs/Output
Video: 1 Vp-p, 75 ohms
S-video: Y: 1 Vp-p, 75 ohms
C: 0.286 Vp-p, 75 ohms
COMPONENT VIDEO: Y: 1 Vp-p, 75 ohms
B-Y: 0.7 Vp-p, 75 ohms
R-Y: 0.7 Vp-p, 75 ohms

3
STR-DA4ES/DA7ES/VA333ES
REMOTE CONTROL RM-US105A
(STR-DA7ES only)
Remote control system Infrared control
Power requirements 3 V DC with two R6
(size-AA) batteries
Dimensions 210 ×45 ×25 mm
Mass (approx.) 95 g excluding batteries
GENERAL
Power requirements 120 V AC, 60 Hz
Power consumption
Models of area code U
STR-DA7ES: 450 W
STR-DA4ES: 420 W
Models of area code CA
STR-DA7ES: 490 VA
STR-DA4ES: 470 VA
Power consumption (during standby mode)
1 W
AC outlets 2 switched, 120 W/1A
Dimensions 430 ×174 ×465 mm
including projecting parts
and controls
Mass (Approx.)
STR-DA7ES: 21.0 kg
STR-DA4ES: 21.0 kg
Supplied accessories
FM wire antenna (1)
AM loop antenna (1)
Audio/video/control S cord (1)
Control S cord (mini jack) (1)
STR-DA7ES only;
Remote commander RM-TP1 (1)
Base unit RMB-TP1 (1 for RM-TP1)
AC adapter (1 for RM-TP1)
Remote commander RM-US105A (1)
R6 (size-AA) batteries (2)
STR-DA4ES only;
Remote commander RM-LP211 (1)
LR6 (size-AA) batteries (3)
Design and specifications are subject to change
without notice.
STR-VA333ES
AMPLIFIER SECTION
Models of area code TW:
Power Output
(8 ohms 20 Hz – 20 kHz, THD 0.05 %)
100 W + 100 W
(4 ohms 20 Hz – 20 kHz, THD 0.09 %)
90 W + 90 W
Reference Power Output
(8 ohms 20 Hz – 20 kHz, THD 0.05 %)
FRONT1): 100 W + 100 W
CENTER1): 100 W
SURR1): 100 W + 100 W
SURR BACK1): 100 W + 100 W
(4 ohms 20 Hz – 20 kHz, THD 0.09 %)
FRONT1): 90 W + 90 W
CENTER1): 90 W
SURR1): 90 W + 90 W
SURR BACK1): 90 W + 90 W
1) Depending on the sound field settings and the
source, there may be no sound output.
Models of area code CEL, KR:
Power Output
(8 ohms 1 kHz, THD 0.7 %)
100 W + 100 W2)
90 W + 90 W3)
(4 ohms 1 kHz, THD 0.7 %)
90 W + 90 W2)
80 W + 80 W3)
Reference Power Output
(8 ohms 1 kHz, THD 0.7 %)
FRONT4): 100 W + 100 W
CENTER4): 100 W
SURR4): 100 W + 100 W
SURR BACK4): 100 W + 100 W
(4 ohms 1 kHz, THD 0.7 %)
FRONT4): 90 W + 90 W
CENTER4): 90 W
SURR4): 90 W + 90 W
SURR BACK4): 90 W + 90 W
(8 ohms 20 Hz – 20 kHz, THD 0.05 %)
FRONT4): 90 W + 90 W
CENTER4): 90 W
SURR4): 90 W + 90 W
SURR BACK4): 90 W + 90 W
(4 ohms 20 Hz – 20 kHz, THD 0.05 %)
FRONT4): 80 W + 80 W
CENTER4): 80 W
SURR4): 80 W + 80 W
SURR BACK4): 80 W + 80 W
2) Measured under the following conditions:
Models of area code CEL: 230 V AC, 50 Hz
3) Measured under the following conditions:
Models of area code KR: 220 V AC, 60 Hz
4) Depending on the sound field settings and the
source, there may be no sound output.

4
STR-DA4ES/DA7ES/VA333ES
Frequency response
PHONO RIAA equalization curve
±0.5 dB
CD/SACD, TAPE, 10 Hz – 100 kHz
MD/DAT, TV/SAT, +0.5/–2 dB (with sound
DVD/LD, VIDEO 1, 2, field, equalizer, and bass
3boost bypassed)
Inputs (Analog)
PHONO Sensitivity: 2.5 mV
Impedance: 50 kilohms
S/N5): 86 dB (A, 2.5 mV6))
MULTI CHANNEL Sensitivity: 150 mV
IN 1, 2, CD/SACD, Impedance: 50 kilohms
TAPE, MD/DAT, S/N5): 100 dB
DVD/LD, TV/SAT, (A, 150 mV6))
VIDEO 1, 2, 3
5) INPUT SHORT.
6) Weighted network, input level.
Inputs (Digital)
CD/SACD, DVD/LD Sensitivity: –
(Coaxial) Impedance: 75 ohms
S/N: 100 dB
(A, 20 kHz LPF)
CD/SACD, DVD/LD, Sensitivity: –
TV/SAT, Impedance: –
MD/DAT (Optical) S/N: 100 dB
(A, 20 kHz LPF)
Outputs
TAPE, MD/DAT Voltage: 150 mV
(REC OUT), VIDEO Impedance: 10 kilohms
1, 2 (AUDIO OUT)
FRONT L/R, Voltage: 2 V
CENTER, Impedance: 1 kilohms
SURROUND L/R,
SURROUND BACK L/R,
SUB WOOFER
EQ
BASS: 99 Hz~1.0 kHz
(21 steps)
MID (FRONT L/R, CENTER only):
198 Hz~10 kHz
(36 steps)
TREBLE: 1.0 kHz~10 kHz
(23 steps)
Gain levels: ±10 dB, 0.5 dB step
FM TUNER SECTION
Tuning range 87.5 – 108.0 MHz
Antenna terminals 75 ohms, unbalanced
Sensitivity
Mono: 18.3 dBf, 2.2 µV/75 ohms
Stereo: 38.3 dBf, 22.5 µV/75 ohms
Usable sensitivity 11.2 dBf, 1 µV/75 ohms
S/N
Mono: 76 dB
Stereo: 70 dB
Harmonic distortion at 1 kHz
Mono: 0.3%
Stereo: 0.5%
Separation 45 dB at 1 kHz
Frequency response 30 Hz – 15 kHz,
+0.5/–2 dB
Selectivity 60 dB at 400 kHz
AM TUNER SECTION
Tuning range 531 – 1602 kHz
Antenna Loop antenna
Usable sensitivity 50 dB/m (at 999 kHz)
S/N 54 dB (at 50 mV/m)
Harmonic distortion 0.5 % (50 mV/m,
400 Hz)
Selectivity 35 dB
VIDEO SECTION
Inputs/Outputs
Video: 1 Vp-p, 75 ohms
S-video: Y: 1 Vp-p, 75 ohms
C: 0.286 Vp-p, 75 ohms
COMPONENT VIDEO: Y: 1 Vp-p, 75 ohms
B-Y: 0.7 Vp-p, 75 ohms
R-Y: 0.7 Vp-p, 75 ohms

5
STR-DA4ES/DA7ES/VA333ES
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE WITH
MARK 0ON 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMESSCHÉMATIQUESETLALISTEDES PIÈCESSONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
MODEL IDENTIFICATION
– BACK PANEL –
MODEL PARTS No.
DA7ES: US model 4-240-816-0s
DA7ES: CND model 4-240-816-1s
DA4ES: US model 4-240-816-2s
DA4ES: CND model
VA333ES: AEP model 4-240-816-4s
VA333ES: KR model 4-240-816-5s
VA333ES: TW model 4-240-816-6s
PART NO.
•Abbreviation
CND : Canadian model
KR : Korea model
TW : Taiwan model
AREA CODE
Fig. 1
4-240-816-3s
About area codes
The area code of the receiver you purchased is
shown on the lower portion of the rear panel (see
the illustration below).
Any differences in operation, according to the
area code, are clearly indicated in the text, for
example, “Models of area code AA only”.
Area code
4-XXX-XXX-XX AA
AC OUTLET
LR
+
–
SURROUND
SURR
BACK
R
CENTER SURR BACK
LR
SURROUND CENTER SURR BACK
SURR
BACK
L
SPEAKERS
IMPEDANCE SELECTOR
4 8
GENERAL
Power requirements
Area code Power requirements
CEL 230 V AC, 50/60 Hz
TW 110 V AC, 60 Hz
KR 220 V AC, 60 Hz
Power consumption
Area code Power consumption
CEL, KR 390 W
TW 400 W (max. 1,000 W)
Power consumption (during standby mode)
1 W
AC outlets
Area code AC outlets
CEL 1 switched, 100 W
TW 2 switched, 100 W
Dimensions 430 ×175 ×465 mm
including projecting parts
and controls
Mass (Approx.) 21.0 kg
Supplied accessories
FM wire antenna (1)
AM loop antenna (1)
Remote commander RM-LP211 (1)
LR6 (size-AA) batteries (3)
Design and specifications are subject to change
without notice.

6
STR-DA4ES/DA7ES/VA333ES
After correcting the original service problem, perform the fol-
lowing safety checks before releasing the set to the customer:
Checkthe antennaterminals, metal trim,“metallized” knobs,screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE
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).
Leakage 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 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 aVOM
or battery-operatedAC voltmeter. 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 pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
SAFETY CHECK-OUT
(US model only)
To Exposed Metal
Parts on Set
0.15
µ F1.5 k
Ω
AC
Voltmeter
(0.75V)
Earth Ground
Fig.A. Using an AC voltmeter to check AC leakage.
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
EXTENSION CABLE AND SERVICE POSITION
When repairing or serving this set, connect the jig (extension cable)
as shown below.
•Connect the Digital board (CN2102) and the E-Vol board
(CNP402) with the extension cable (Part No. J-2501-049-A).
DIGITAL board
CNP402
CN2102
E-VOL board
J-2501-049-A

7
STR-DA4ES/DA7ES/VA333ES
TABLE OF CONTENTS
1. SERVICE NOTE ································································ 8
2. GENERAL ··········································································· 9
3. TEST MODE ····································································· 11
4. DISASSEMBLY
4-1. Case .................................................................................. 12
4-2. Panel Assy ........................................................................ 13
4-3. Bracket.............................................................................. 13
4-4. Back Panel Section ........................................................... 14
4-5. Digital Board .................................................................... 14
4-6. Input Board, E-vol Board ................................................. 15
4-7. A-class Board, Amp Board............................................... 15
4-8. Ac Board, Cis Power Board ............................................. 16
4-9. Dc Board........................................................................... 16
5. ELECTRICAL ADJUSTMENTS································· 17
6. DIAGRAMS
6-1. IC Pin Function ................................................................ 18
6-2. Block Diagram –Audio Section– ..................................... 22
6-3. Block Diagram –Video Section– ...................................... 23
6-4. Block Diagram –Digital Section (1/2)–............................ 24
6-5. Block Diagram –Digital Section (2/2)–............................ 25
6-6. Block Diagram –Power Amp Section–............................. 26
6-7. Circuit Boards Location ................................................... 27
6-8. Schematic Diagram –Digital Section (1/7)– .................... 29
6-9. Schematic Diagram –Digital Section (2/7)– .................... 30
6-10. Schematic Diagram –Digital Section (3/7)– .................... 31
6-11. Schematic Diagram –Digital Section (4/7)– .................... 32
6-12. Schematic Diagram –Digital Section (5/7)– .................... 33
6-13. Schematic Diagram –Digital Section (6/7)– .................... 34
6-14. Schematic Diagram –Digital Section (7/7)– .................... 35
6-15. Printed Wiring Board –Digital Section– ..........................36
6-16. Printed Wiring Board –Input Section– ............................. 38
6-17. Schematic Diagram –Input Section– ................................ 40
6-18. Printed Wiring Boards –S-Video Section– ....................... 41
6-19. Schematic Diagram –S-Video Section (1/2)– .................. 42
6-20. Schematic Diagram –S-Video Section (2/2)– .................. 43
6-21. Printed Wiring Boards –C-Video Section– ...................... 44
6-22. Schematic Diagram –C-Video Section– ........................... 45
6-23. Printed Wiring Boards –E-Vol Section– ........................... 46
6-24. Schematic Diagram –E-Vol Section (1/2)– ...................... 48
6-25. Schematic Diagram –E-Vol Section (2/2)– ...................... 49
6-26. Printed Wiring Board –A-Class Section–......................... 50
6-27. Schematic Diagram –A-Class Section– ........................... 51
6-28. Printed Wiring Board –CIS Section– ............................... 52
6-29. Schematic Diagram –CIS Section– .................................. 53
6-30. Printed Wiring Board –Up Convert Section– ................... 54
6-31. Schematic Diagram –Up Convert Section–...................... 55
6-32. Printed Wiring Board –Amp Section–.............................. 56
6-33. Schematic Diagram –Amp Section– ................................ 57
6-34. Printed Wiring Boards –Display Section–........................ 58
6-35. Schematic Diagram –Display Section– ............................ 59
6-36. Printed Wiring Board –Digital input Section– ................. 60
6-37. Schematic Diagram –Digital input Section– .................... 61
6-38. Printed Wiring Boards –Speaker Section– ....................... 62
6-39. Schematic Diagram –Speaker Section– ........................... 63
6-40. Printed Wiring Boards –Power Section– .......................... 64
6-41. Schematic Diagram –Power Section– .............................. 65
6-42. IC Block Diagrams ........................................................... 66
7. EXPLODED VIEWS
7-1. Case Section ..................................................................... 72
7-2. Front Panel Section (1)..................................................... 73
7-3. Front Panel Section (2)..................................................... 74
7-4. Rear Section ..................................................................... 75
7-5. Chassis Section (1) ........................................................... 76
7-6. Chassis Section (2) ........................................................... 77
8. ELECTRICAL PARTS LIST ········································ 78

8
STR-DA4ES/DA7ES/VA333ES
TrackNo.
1
2
3
4
5
SECTION 1
SERVICE NOTE
DTS Decode Test
• Required Instrument
CD player (equipped with optical digital output)
Optical cable
DTS test CD (J-2501-154-A)
Connection:
Time
5'40"
4'16"
4'08"
3'29"
6'42"
Music Demonstration
Contents
Seal : "Prayer for the Dying"
Andrew Litton conducting
The Dallas Symphony Orchestra & Chorus:
Excerpt from Tchaikovsky: "1812 Overture"
Alan Parsons with Christopher Cross: "So Far Away"
Shoelss Joe: "The Bet"
TELARC: "A Touch of Surround Madness"
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-
ING (blue lamp) flashes on the front panel.
TrackNo.
6
7
8
9
10
11
12
13
14
15
16
Set-Up
Contents
1 kHz sine (All channels)
Level Adjustment and Harmonic Distortion Analysis
100 Hz sine (All channels)
Verification of Signal and Subwoofer Testing
C-Weighted Pink Noise-Left Front Channel
C-Weighted Pink Noise-Center Channel
C-Weighted Pink Noise-Right Front Channel
C-Weighted Pink Noise-Right Rear Channel
C-Weighted Pink Noise-Left Rear Channel
C-Weighted Pink Noise-Subwoofer (LEE)
C-Weighted Pink Noise-All Channels
10 Hz to 20 kHz Sine Sweep
An "All Channel" Frequency Response Test
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.
1 CD player
2 Optical
digital output
3 Optical input
4 Receiver STR-DA3ES/DA5ES/VA555E
S
5 DTS test CD (Music Demonstration and Set Up Disc)
Time
1'00"
1'00"
1'00"
2'00"
2'00"
2'00"
2'00"
2'00"
2'00"
2'00"
2'00"
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.
DC BOARD (COMPONENT SIDE)
C803
D801
C804
(CHASSIS
)
330 Ω 2W
CNP80314
+B -B

9
STR-DA4ES/DA7ES/VA333ES
SECTION 2
GENERAL This section is extracted
from instruction manual.
STR-DA4ES/DA7ES

10
STR-DA4ES/DA7ES/VA333ES
STR-VA333ES

11
STR-DA4ES/DA7ES/VA333ES
SECTION 3
TEST MODE
FLUORESCENT INDICATOR TUBE TEST MODE
All fluorescent segments are tested. When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:
1. While depressing, the [DISPLAY] and the [ENTER] buttons si-
multaneously, press the power `/1 button to turn on the main
power.
2. All segments turn on at the same time, then each segment turns
on press the [DIMMER] button.
FACTORY SET MODE
All preset contents are reset to the default setting.
Procedure:
Procedure:
1. While pressing [SET UP] and [DIMMER] buttons, press `/1
button, then “TUNER FACTORY PRESET” is displayed in
several seconds and PRESET is complete.
ALL CLEAR MODE
Procedure:
1. Press `/1 button continuously, then “ENTER to Clear ALL” is
displayed and press [ENTER] the preset data are cleared.”
SOUND FIELD CLEAR MODE
The preset sound field is cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. While depressing the [MODE +] button, press the power `/1
button to turn on the main power. The message S.F Initialize
appears and initialization is performed.
AM CHANNEL STEP 9 KHZ/10 KHZ
SELECTION MODE
(DA4ES, DA7ES, VA333ES: E MODELS)
Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:
1. Set the FUNCTION to AM. Turn off the main power.
2. While depressing the [TUNING +] button press the power `/1
button to turn on the main power.
3. Either the message AM 9kHz Step or AM 10kHz Step appears.
Select the desired step.
VERSION MODE
Procedure:
1. While pressing [SURR] and [ENTER] buttons, press `/1
button, then “MENU SPECIALIZED!” is displayed in several
seconds.
2. Press [>] button, then “D7ES U_CA VX.XX...” is displayed in
several seconds.

12
STR-DA4ES/DA7ES/VA333ES
Note: Follow the disassembly procedure in the numerical order given.
4-1. CASE
SECTION 4
DISASSEMBLY
Note: This set can be disassemble according to the following sequence.
4-1. CASE
(Page 12)
4-2. PANEL ASSY
(Page 13)
SET
4-3. BRACKET
(Page 13)
4-4. BACK PANEL SECTION
(Page 14)
4-5. DIGITAL BOARD
(Page 14)
4-6. INPUT BOARD,
E-VOL BOARD
(Page 15)
4-7. A-CLASS BOARD,
AMP BOARD
(Page 15)
4-8. AC BOARD,
CIS POWER BOARD
(Page 16)
4-9. DC BOARD
(Page 16)
1 two screws
(TP), flat head
2 two screws
(TP), flat hea
d
3 two screws
(TP), flat head
4 case

13
STR-DA4ES/DA7ES/VA333ES
4-2. PANEL ASSY
4-3. BRACKET
8 screw
(BV 3x8 CU)
3 screw
(BV 3x8 CU)
4 four screws
(TP), flat head
5 three screws
(TP), flat head
9 panel assy
1 CN2106
2 CN2107
6 CNP107
7 CNP111
1 screw
(BV 3x8 CU)
2 screw
(BV 3x8 CU)
3 bracket
(reinforcement(VA))
5 two screws
(BVTP 3x8
)
4 three screws
(BV 3x8 CU)
6 four screws
(BVTP 3x8)

14
STR-DA4ES/DA7ES/VA333ES
4-4. BACK PANEL SECTION
4-5. DIGITAL BOARD
qg five screws
(BV 3x8 CU)
qh five screws
(BV 3x8 CU)
qj two screws
(fedder fixed)
qd two screws (BV 3x8 CU)
qf two screws (BVTT 4x8)
qk CNP506
ql CNP507
w; CN903
wa CNP651
ws CN1001
wg back panel section
wf CNP52
1 CNP204
2 CN2101
3 CN2105
4 CN2104
5 CN2103
wd CNP51
6 CNP810
8 CNP504
9 CNP503
0 CN504
qa CNP702
qs CNP509
7 CN801
2 two screws
(BV 3x8 CU
)
5
3
two screws
(BV 3x8 CU)
4 two screws
(BV 3x8 CU)
1 CN2102
6 CN1701
7 CN1803
8 CN1601
9 CN1602
0 CN1801
qa CN1802
qs DIGITAL board

15
STR-DA4ES/DA7ES/VA333ES
4-6. INPUT BOARD, E-VOL BOARD
4-7. A-CLASS BOARD, AMP BOARD
0 INPUT board
qd E-VOL board
9 two screws
(BV 3x8 CU)
qs two screws
(BV 3x8 CU)
1 CN501
2 CNP603
qa CNP408
3 CNP307
6 CNP303
5 CNP305
8 CNP301
7 CNP306
4 CNP304
qa AMP board
4 A-CLASS board
5 two screws
(BV 3x8 CU)
6 two screws
(BV 3x8 CU)
8 eight screws
(transistor)
heat sink ass
y
9 six screws
(transistor)
0 two screws
(BV 3x8 CU)
2 two screws
(BV 3x8 CU)
3
7
1
CNP505

16
STR-DA4ES/DA7ES/VA333ES
4-8. AC BOARD, CIS POWER BOARD
4-9. DC BOARD
0 CIS POWER board
5 AC board
8 two screws
(BV 3x8 CU)
3 two screws
(BV 3x8 CU)
2 CNP902
1 CNP908
4
9
6
CNP809
7 CNP810
5 DC board
4 two screws
(BV 3x8 CU)
3 two screws
(BV 3x8 CU)
1 CNP804
2 CNP802

17
STR-DA4ES/DA7ES/VA333ES
SECTION 5
ELECTRICAL ADJUSTMENT
[IDLING CURRENT ADJUSTMENT]
Measuring Instrument: Digital voltmeter
Adjustment Procedure: Adjust the respective adjustment elements so that the voltage (absolute value) across the corresponding
testpoints satisfies the specification.
Specification
4.0mV±0.5mV
Channel
FRONT L
FRONT R
CENTER
SURROUND L
SURROUND R
SURR BACK L
SURR BACK R
Test point
TP501
TP551
TP652
TP701
TP751
TP651
TP601
Adjustment element
RV501
RV551
RV652
RV701
RV751
RV651
RV601
Adjustment Location:
TP501
RV501
TP652
RV652
RV701 TP751
TP651
TP701
VR751
VR601
TP551
RV551
[AMP BOARD]
RV651
TP601
[OSD ADJUSTMENT]
Measuring Instrument: frequency counter
Procedure:
1. Connect the frequency counter to check connector (TP201) of
the S VIDEO board.
2. Connect between Pin 3to Pin 4of TP201 by lead wire.
3. Adjust the respective adjustment element so that the frequency
counter read specification.
Adj. MODEL Adjustment
element
CT202
(CLOCK BOARD)
CT201
(CLOCK BOARD)
measurement
point Specification
I
II
DA4ES, DA7ES
VA333ES
CT203
(S-VIDEO BOARD)
CT204
(S-VIDEO BOARD)
NTSC
PAL TP201
Pin 1
TP201
Pin 2
3.579545MHz ±50Hz
7.20MHz ±0.01MHz
4. After check, remove the lead wire connected in step 2.
Adjustment Location:
[S-VIDEO BOARD]
CT203
CT204
TP201
1
4
+
–
frequency counte
r
S- VIDEO
BOARD
Shorting
TP201
1
4
4.433618MHz ±50Hz
3.57954MHz ±50Hz
All models
[CLOCK BOARD]
CT202
CT201

18
STR-DA4ES/DA7ES/VA333ES SECTION 6
DIAGRAMS
6-1. IC PIN FUNCTION
• IC1201 CXD9617R (AUDIO DSP) (DIGITAL BOARD (4/7))
Pin No. Pin Name I/O Pin Description
1VSS — Ground pin
2XRST I Reset signal input
3EXTIN I Not used. (connected to ground.) Master clock signal input
4FS2 I Not used. (connected to ground.)
5VDDI — Power supply pin (+3.3 V)
6FS1 I Not used. (connected to ground.)
7PLOCK O Not used. (open)
8VSS — Ground pin
9MCLK1 I External crystal signal input (13.5 MHz)
10 VDDI — Power supply pin (+3.3 V)
11 VSS — Ground pin
12 MCLK2 O External crystal signal output (13.5 MHz)
13 MS I Not used. (connected to ground.)
14 SCKOUT O Not used. (open) Audio clock signal output
15 LRCKI1 I LRCK clock signal input
16 VDDE — Power supply pin (+3.3 V)
17 BCKI1 I BCK clock signal input
18 SDI1 I Audio serial data signal input
19 LRCKO O LRCK clock signal output
20 BCKO O BCK clock signal output
21 VSS — Ground pin
22 KFSIO I KFSIO signal input
23 SDO1 O Audio serial data signal output 1
24 SDO2 O Audio serial data signal output 2
25 SDO3 O Audio serial data signal output 3
26 SDO4 O Audio serial data signal output 4
27 SPDIF O Not used. (open) S/P DIF signal output
28 LRCKI2 I LRCK clock signal input
29 BCKI2 I BCK clock signal input
30 SDI2 I Audio serial data signal input
31 VSS — Ground pin
32 HACN O Host I/F acknowledge signal output
33 HDIN I Host I/F serial data signal input
34 HCLK I Host I/F serial clock signal input
35 HDOUT O Host I/F serial data signal output
36 HCS I Host I/F chip select signal input
37 SDCLK O Not used. (open)
38 CLKEN O Not used. (open)
39 RAS O Not used. (open)
40 VDDI — Power supply pin (+3.3 V)
41 VSS — Ground pin
42 CAS O Not used. (open)
43 DQM/OE0 O Not used. (open)
44 CS0 — Ground pin
45 WE0 O External memory write enable signal output
46 VDDE — Power supply pin (+3.3 V)
47 WMD1 I Not used. (connected to VDDE.) External memory wait mode signal input 1
48 VSS — Ground pin
49 WMD0 I Not used. (connected to VDDE.) External memory wait mode signal input 0
50 PAGE2 O External memory page select signal output
51 VSS — Ground pin

19
STR-DA4ES/DA7ES/VA333ES
Pin No. Pin Name I/O Pin Description
52 PAGE1 O Not used. (open)
53 PAGE0 O Not used. (open)
54 BOOT I Not used. (connected to ground.)
55 BTACT O Not used. (open)
56 BST I DSP BST signal input
57 MOD1 I Not used. (connected to VDDE.)
58 MOD0 I Not used. (connected to ground.)
59 EXLOCK I DIR error input from LC89056W (IC1101)
60 VDDI — Power supply pin (+3.3V)
61 VSS — Ground pin
62, 63 A17,A16 O Not used. (open)
64 to 66 A15-13 O Address data output to RAM (IC1202)
67 GP10 O BCK clock output to SSM Not used. (open)
68 GP9 O GP signal output to MB91F155-2ESX100 (IC2001)
69 GP8 O Audio signal output to LC89056W (IC1101)
70 VDDI — Power supply pin (+3.3V)
71 VSS — Ground pin
72 D15/GP7 I/O Data input/output to RAM (IC1202)
73 D14/GP6 I/O Data input/output to RAM (IC1202)
74 D13/GP5 I/O Data input/output to RAM (IC1202)
75 D12/GP4 I/O Data input/output to RAM (IC1202)
76 VDDE — Power supply pin (+3.3 V)
77 D11/GP3 I/O Data input/output to RAM (IC1202)
78 D10/GP2 I/O Data input/output to RAM (IC1202)
79 D9/GP1 I/O Data input/output to RAM (IC1202)
80 D8/GP0 I/O Data input/output to RAM (IC1202)
81 VSS — Ground pin
82 to 85 A9-12 O Address data output to RAM (IC1202)
86 TD0 I Not used. (connected to VDDE.)
87 TMS I Not used. (connected to VDDE.)
88 XTRST I Not used. (connected to VDDE.)
89 TCK I Not used. (connected to VDDE.)
90 TDI I Not used. (connected to VDDE.)
91 VSS — Ground pin
92 to 97 A8-3 O Address data output to RAM (IC1202)
98, 89 D7,D6 I/O Data input/output to RAM (IC1202)
100 VDDI — Power supply pin (+3.3 V)
101 VSS — Ground pin
102 to 105 D5-2 I/O Data input/output to RAM (IC1202)
106 VDDE — Power supply pin (+3.3 V)
107, 108 D1,D0 I/O Data input/output to RAM (IC1202)
109, 110 A2,A1 O Address data output to RAM (IC1202)
111 VSS — Ground pin
112 A0 O Address data output to RAM (IC1202)
113 PM I PM signal input from MB91F155-2ESX100 (IC2001)
114 SDI3 I Sound data input Not used. (open)
115 SDI4 I Sound data input Not used. (open)
116 SYNC I Not used. (connected to VDDE.)
117 VSS — Ground pin
118 VSS — Ground pin
119 VSS — Ground pin
120 VDDI — Power supply pin (+3.3 V)

20
STR-DA4ES/DA7ES/VA333ES
•IC2001 MB91F155-2ESX100 (SYSTEM CONTROL) (DIGITAL BOARD (2/7))
Pin No. Pin Name I/O Pin Description
1DSP1MOD1 O SSM select signal output
2XMODE O Mode signal output to LC89056W (IC1101)
3CKSEL O Clock select signal output to LC89056W (IC1101)
4DIR-CLK O Clock signal output to LC89056W (IC1101)
5DIR-CE O Chip enable signal output to LC89056W (IC1101)
6DIR-DI O Data output to LC89056W (IC1101)
7DIR-DO I Data input from LC89056W (IC1101)
8DIR-ERROR I Dir error input from LC89056W (IC1101)
9VSS — Ground pin
10 DIR-DATAO I Dir data input
11 DIR-XSTATE I Dir state signal input
12 CLK-SW O Clock select signal output
13 DAMUTE O D/A output muting signal output
14 1XRST O Reset signal output to DSP1 (IC1201)
15 1PM O PM signal output to DSP1 (IC1201)
16 1GP9 I GP signal input from DSO1 (IC1201)
17 1BST O BST signal output to DSP1 (IC1201)
18 1HCS O HCS signal output to DSP1 (IC1401)
19 1HDOUT I HD input from DSP1 (IC1201)
20 1HACN I HACN signal input from DSP1 (IC1201)
21 2XRST O BST signal output to DSP2 (IC1401)
22 2BST O Reset signal output to DSP2 (IC1401)
23 2PM O PM signal output to DSP2 (IC1401)
24 2EXLOCK O Ext lock signal output to DSP2 (IC1401)
25 3EXLOCK O Ext lock signal output to DSP3 (IC1501)
26 VSS — Ground pin
27 VCC — Power supply pin (+3.3V)
28 2HACN I HACN signal input from DSP2 (IC1401)
29 2HDOUT I HD input from DSP2 (IC1401)
30 2HCS O HCS signal output to DSP2 (IC1401)
31 3XRST O Reset signal output to DSP3 (IC1501)
32 3BST O BST signal output to DSP3 (IC1501)
33 3PM O PM signal output to DSP3 (IC1501)
34 3HACN I HACN signal input from DSP3 (IC1501)
35 3HDOUT I HD input from DSP3 (IC1501)
36 3HCS O HCS signal output to DSP3 (IC1501)
37 DARST O Reset signal output to D/A converter (IC1602)
38 DA2LAT O Serial data latch signal output to D/A converter (IC1602)
39 DACLK O Serial clock output to D/A converter (IC1602)
40 DADATAOUT O Serial data output to D/A converter (IC1602)
41 DA2DATAIN I Serial data input from D/A converter (IC1602)
42 DA1LAT O Serial data latch signal output to D/A converter (IC1602)
43 DA1DATAIN I Serial data input from D/A converter (IC1602)
44 VSS — Ground pin
45 ADINT O INT signal output to AK5352 (IC1701)
46 DSP2 GP3 I GP3 signal input from DSP2 (IC1401)
47 END FLAG I End flag input from UART (IC1901)
48 DSP3 GP3 I GP3 signal input from DSP3 (IC1501)
49 MBUS-STS0 I M-BUS status input
50 CTLAT O Control latch signal output to UART (IC1901)