Sansui AV 7150 Service Manual

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{ISANSUI

SERVICE MANUAL

RZ-81OOAV

A/V RECEIVER with SURROUND Circuit

For World Market Model, Black Color.

RZ-815OAV

A/V RECEIVER with SURROUND Circuit

For World Market Model, Gold Color.

AV-7100

A/V AMPLIFIER with SURROUND Circuit

For World Market Model, Black Color.

AV-7150

A/V AMPLIFIER with SURROUND Circuit
For World Market Model, Gold Color.

AV-7700

AN AMPLIFIER with SURROUND Circuit
This Model is For Japan Market Onlyl!

Variation of Tow Colors (Black & Gold).

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-Design and specifications subject to changes without notice for improvements.
-Due to local laws and regulations, this unit sold in some areas are not equipped with variable voltage selector.

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~Do|by noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"'DOLBY" and the double-D symbol DC] are trademarks of Dolby Laboratories Licensing Corporation.

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336

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AV-7700 AV-7150

AV-7100

RZ-8150AV RZ-8100AV

CAUTION (We?)

1. Parts identified the & symbol on the schematic diagram and the parts list are critical for safety.

Use only replacement parts that have critical characteristics recommended by the manufacturer.

2. Make leakage-current for resistance measurements to determine that exposed parts are

acceptably insulated from the supply circuit before retuming the appliance to the customer.
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Table of Contents / E R

The symbols, 00, UL, CSA, SS, EU, IPT, FTZ
and XX on the parts list and the schematic diagram
mean followings respectively.

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0 O ................. Manufactured for Japanese market.

UL .................. Manufactured for USA. market.
(Underwriters Laboratories
approved model.)

C SA ............... Manufactured for Canadian market.

S S .. .. Manufactured for Saudi Arabian markeL

EU . .. Manufactured for European market.

IPT .. Manufactured for Italian market.
FTZ ............... Manufactured for F. R. Germanic market
XX .................. Standard Version.

*(EXPORT)* (Non Japanese market.)

Non Mark Common parts.

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..... Caution / E33

..... Notice / Eh HI

..... Table of contents / E :52

. Guaide of model / fig; I79

Specifications / ii E'Wfl"

Block Diagram / 71] y 5."#2"

. Schematic Diagram / [3% -"#3"

.Adjustment / Efigfiifi "#4"

Interior Block Diagram & terminal
Function of ICS /IC 03 I75] EBI"#5"

21 .................... Parts Location on Printed Circuit

Board / Etfimgfiéflafil'we"
27 .................... Parts List of Printed Circuit Board

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37 .................... Mechanism Parts List/ $1338 15% §"#8"
39 Packing list /maia§fln'=c:fi"#9"
39 .Accessory List/Ngfirgfifinfi'w1 0"
4o ..... Packing list /$$E1~Z%Bn=ci 5W1 1"
40 .................... Accessory List/ {3 I: 5?ng 0:3: §"#12"

Model name marker "-" in top of any page indicate be written of this model here.

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RZ-8100AV

RZ-8150AV

AV-7150

AV-7700

AV-7100

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RZ-8150AV RZ-8100AV

3-2-2. F.M. MUTING LEVEL ADJUSTMENT (Fig. 2 and Fig. 4)

NOTE : 1. Input Selector Switch . " TUNER " 2. Tuning Band Selector Switch. ." FM "
3. Tuning Mode Switch. TUNING AUTO " 4. SOURCE DIRECT " On "
5. And setting F.M. STEREOPHONIC Signal Generator, A.C. Milli-Volt & Distortion Meter and Wave Scope.

1 . Remove the Bonnet.

2. Connections are shown in ' Fig. 2 " (before the page : 13 / section number: 3-2-1 ) and the " POWER (STANDBY) '
key switch pushed On.

3. Put the feed radio frequency signal of monophonic full moduration at lkHz carried by frequency modulation wave at 98MHz from
F.M. Stereophonic Signal Generator to FM Antenna terminal " in the model.

4. Adjust the dVR1 ' to get, at the Time radio frequency signal carried by frequency modulation wave at 25dBf, signals on both
channels output terminals at lkHZ and each the time and radio frequency signal carried by frequency modulation wave at 24dBf,
non signals on both channels output terminals at lkHZ.

* *Output terminals are REC ( OUT ) terminal at TAPE 1, TAPE 2 / MONITOR or VIDEO.

3-2-3. A.M. INTERMEDIATE FREQUENCY TRANSFORMER ADJUSTMENT ( Fig. 3 and Fig. 4)

NOTE : 1. Input Selector Switch ..................... " TUNER ~ Fig. 3
2. Tuning Band Selector Switch ......... " AM " i: NEW 6
3, Tuning Mode Switch ...................... " TUNING AUTO fijEBQILJE .. . L
4. SOURCE DIRECT ......................... " On "

5. And setting A.M. Signal Generator, A.C. Milli-Volt Meter and Wave Scope.

1 . Remove the Bonnet.
2. Connections are shown in " Fig. 3 " and the " POWER (STANDBY) " key switch pushed On.
3. Put the feed radio frequency signal ofmonophonic full moduration at 4001-12 carried by amplitude modulation wave of 55dBm at

1000kHz or 999kHz from A.M. Monophonic Signal Generator to " AM Antenna terminal " in the model.

4. Adjust the " eT2 ' to get, at the maximum output signal level on output terminals .

* *Output terminals are REC (OUT) terminal at TAPE 1, TAPE 2 / MONITOR or VIDEO. * *

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