Yamaha HTR-5240 Service manual

AV RECEIVER

RX-V496/RX-V496RDS

HTR-5240/HTR-5240RDS

SERVICE MANUAL

IMPORTANT NOTICE

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated.

WARNING:Failure to follow appropriate service and safety procedures when servicing this product

IMPORTANT:The presentation or sale of this manual to any individual of firm does not constitute

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.

WARNING:Static discharges can destroy expensive components. Discharge any static electricity

IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before

may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative.

authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.

your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).

you apply power to the unit.

■CONTENTS

TO SERVICE PERSONNEL...........................................1

REMOTE CONTROL PANELS.......................................1

FRONT PANELS.............................................................2

REAR PANELS...........................................................3~4

SPECIFICATIONS.......................................................5~6

INTERNAL VIEW............................................................7

DISASSEMBLY PROCEDURES....................................7

SELF DIAGNOSIS FUNCTION................................8~19

FACTORY PRESET......................................................20

100704

AMP ADJUSTMENT.....................................................21

TUNER ADJUSTMENT...........................................22~25

IC DATA..................................................................26~34

DISPLAY DATA...........................................................35

BLOCK DIAGRAM..................................................36~39

PRINTED CIRCUIT BOARD...................................40~59

SCHEMATIC DIAGRAM.........................................60~67

PARTS LIST............................................................68~85

REMOTE CONTROL TRANSMITTER...................86~87

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■ TO SERVICE PERSONNEL

1. Critical Components information Components having special characteristics are marked be replaced with parts having specifications equal to those originally installed.

2. Leakage Current Measurement (For 120V Model only) When service has been completed, it is imperative that you verify that all exposed conductive surfaces are properly insulated from supply circuits. Meter impedance should be equivalent to 1500 ohm shunted by 0.15µF.

•

Leakage current must not exceed 0.5mA.

•

Be sure to test for leakage with the AC plug in both polarities.

•

"CAUTION"

"F804: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,REPLACE ONLY WITH SAME TYPE 6.0A,125V FUSE."

ATTENTION

A V

F804: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 6.0A, 125V FUSE

and must

WALL

OUTLET

EQUIPMENT

UNDER TEST

INSULATING

TABLE

AC LEAKAGE

TESTER OR

EQUIVALENT

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.

■ REMOTE CONTROL PANELS

▼ U,C,R,T,A and L models ▼ B and G models

DVD /LD

DVD

DVD/LD

PHONO

TEST

RETURN

SLEEP

DIR A DIR B

RAV203

V473170 US

TAPE

AMP

/MD

TUNER

VCR

/SAT

POWER

TUNER3TAPE/MD

SAT/D-TV6VCR

V-AUX9EXT.DEC.

ENTER

CLEAR

A/B/C/D/E

EFFECT

DISC SKIP

PRESET

MUTE

INDEX

DISP

TV INPUTVCR REC

PRG

A/B

SELECT

MENUTITLE

PRG

SET MENUTIME/LEVEL

CBL

100

AMP

TUNER

DVD /LD

DVD

POWER

TUNER3TAPE/MD

SAT/D-TV6VCR

DVD/LD

V-AUX9EXT.DEC.

PHONO

ENTER

A/B/C/D/E

TEST

DISC SKIP

PRESET

MUTE

RETURN

SLEEP

PRG

DIR A DIR B

SELECT

PRG

TAPE /MD

VCR

CBL

/SAT

100

CLEAR

EFFECT

INDEX

DISP

TV INPUTVCR REC

A/B

MENUTITLE

SET MENUTIME/LEVEL

RAV204

V473190 EU

■ FRONT PANELS

▼ RX-V496

U, C, A and L models→BL (Black model)

•

R and T models→BL (Black model) and GD (Gold model)

•

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

▼ RX-V496RDS

▼ HTR-5240• U, C, T and A models→BL (Black model)

B model→BL (Black model)

•

G model→BL (Black model) and TI (Titan model)

•

▼ HTR-5240RDS• G model→BL (Black model)

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■ REAR PANELS

▼ RX-V496/HTR-5240 U model

▼ RX-V496/HTR-5240 C model

▼ RX-V496 R model

▼ RX-V496/HTR-5240 T model

▼ RX-V496/HTR-5240 A model

▼ RX-V496RDS B model

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

▼ RX-V496RDS/HTR-5240RDS G model

▼ RX-V496 L model

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■ SPECIFICATIONS

■AUDIO SECTION

Minimum RMS Output Power Per Channel

(Power Amp. Section)

U, C models

MAIN L/R, REAR L/R

20Hz to 20kHz, 0.06% THD, 8Ω 70W+70W 1kHz, 0.09% THD, 8Ω 80W+80W

CENTER

20Hz to 20kHz, 0.06% THD, 8Ω 70W 1kHz, 0.09% THD, 8Ω 80W

R,T,A,B,G,L models

MAIN L/R, REAR L/R

20Hz to 20kHz, 0.06% THD, 8Ω 65W+65W 1kHz, 0.09% THD, 8Ω 70W+70W

CENTER

20Hz to 20kHz, 0.06% THD, 8Ω 65W 1kHz, 0.09% THD, 8Ω 70W

Maximum Power (EIAJ)

R, T models only

MAIN L/R, REAR L/R

1kHz, 10% THD, 8Ω 100W+100W

CENTER, 1kHz, 10% THD, 8Ω 100W

Dynamic Power Per Channel (IHF)

MAIN L/R

U, C models

8/6/4/2Ω

100W+100W/120W+120W/140W+140W/160W+160W

R,T models

8/6/4/2Ω

90W+90W/110W+110W/130W+130W/150W+150W

DIN Standard Output Power Per Channel

G model only

MAIN L/R, 1kHz, 0.7% THD, 4Ω 100W+100W

Dynamic Headroom(8Ω)

U, C models only 1.55dB

IEC Power

G model only

MAIN L/R, 1kHz, 0.06% THD, 8Ω 70W+70W

Damping Factor (SPEAKER A)

MAIN L/R, 20Hz to 20kHz, 8Ω 60

Input Sensitivity/Input Impedance

PHONO (MM) 2.5mV/47kΩ CD etc. 150mV/47kΩ MAIN L/R (EXTERNAL DECODER) 150mV/47kΩ CENTER 150mV/40kΩ SURROUND L/R 150mV/40kΩ SUB WOOFER 150mV/40kΩ

Maximum Input Signal Level (1kHz)

PHONO (MM), 0.1% THD 100mV CD etc. (EFFECT ON), 0.5% THD 2.2V

Output Level/Output Impedance

REC OUT 150mV/1.2kΩ SUB WOOFER (MAIN SP : SMALL) 4V/1.2kΩ

Headphone Jack Rated Output/Impedance

CD etc., Input=1kHz, 150mV, RL=8Ω 0.47V/390Ω

Frequency Response(20Hz to 20kHz)

CD etc., MAIN 0±0.5dB

RIAA Equalization Deviation

PHONO (MM) 0±0.5dB

Total Harmonic Distortion(20Hz to 20kHz)

PHONO (MM) to REC OUT (1V) 0.02% CD etc.(EFFECT OFF) to MAIN SP OUT(35W/8Ω)

0.025%

Signal-to-Noise Ratio(IHF-A Network)

PHONO (MM), Input shorted, REC OUT

U, C, R, T models 86dB A, B, G, L models 81dB

CD etc,(EFFECT OFF), Input shorted, SP OUT

96dB

Residual Noise(IHF-A Network)

MAIN L/R, SP OUT 150µV

Channel Separation(Vol. –30dB, EFFECT OFF)

PHONO, Input shorted, 1kHz/10kHz 60dB/55dB CD etc, Input 5.1kΩ terminated, 1kHz/10kHz

60dB/45dB

Tone Control Characteristics

BASS : Boost/Cut ±10dB(50Hz)

: Turnover Frequency 350Hz

TREBLE : Boost/Cut ±10dB(20kHz)

: Turnover Frequency 3.5kHz

Filter Characteristics

MAIN, CENTER, REAR SP SMALL : H.P.F.

fc=90Hz, 12dB/oct.

SUB WOOFER : L.P.F. fc=90Hz, 18dB/oct.

■FM SECTION Tuning Range

U, C models 87.5 to 107.9MHz R, T models (Frequency Step: 100kHz)

87.5 to 108.0MHz

(Frequency Step: 50kHz)

87.50 to 108.00MHz

A, B, G, L models 87.50 to 108.00MHz

50dB Quieting Sensitivity (IHF)

U, C, R, T models only

Mono, 1kHz, 100% mod 1.6µV(15.3dBf) Stereo, 1kHz, 100% mod 23µV(38.5dBf)

Usable Sensitivity (DIN)

A, B, G, L models only

DIN, Mono(S/N 26dB) 0.9µV DIN, Stereo(S/N 46dB) 28µV

Alternate Channel Selectivity

U, C, R, T models (±400kHz) 75dB A, B, G, L models (±300kHz)

Selectivity(two signals, 40kHz Dev.) 55dB

Signal-to-Noise Ratio

U, C, R, T models (IHF)

Mono/Stereo 81dB/75dB

A, B, G, L models (DIN-Weighted, 40kHz Dev.)

Mono/Stereo 75dB/69dB

Harmonic Distortion (1kHz)

Mono/Stereo 0.1%/0.2%

Stereo Separation (1kHz) 48dB Frequency Response (20Hz to 15kHz) 0±1dB Output Level (1kHz)

U, C, R, T models (100% mod.) 550mV A, B, G, L models (40kHz Dev.) 550mV

Antenna Input 75Ω unbalanced

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■AM SECTION Tuning Range

U, C models 530 to 1710kHz R, T models (Frequency Step : 10kHz) 530 to 1710kHz

(Frequency Step : 9kHz) 531 to 1611kHz

A, B, G, L models 531 to 1611kHz

Usable Sensitivity 300µV/m Signal-to-Noise Ratio 52dB Output Level (1kHz, 30% mod.) 150mV Antenna Loop antenna

■VIDEO SECTION Video Signal Type

U, C models NTSC R model NTSC/PAL T, A, B, G, L models PAL

Video Signal Level 1Vp-p/75Ω S-Video Signal Level

Y:1Vp-p/75Ω,C:0.286Vp-p/75Ω

Maximum Input Level 1.5Vp-p Signal-to-Noise Ratio 50dB Monitor Output Frequency Response(–3dB) 5Hz~10MHz

■GENERAL Power Supply

U, C models AC120V, 60Hz R model AC110/120/220/240V, 50/60Hz T model AC220V, 50Hz A model AC240V, 50Hz B, G, L models AC230V, 50Hz

Power Consumption

U, R, T, A, B, G, L models 210W C model 220W/290VA

Standby Power Consumption

U, C, models 0.90W A, B, G, L models 0.96W

Maximum Power Consumption

R model only

5CH Simultaneous output, 10% THD 500W

AC Outlet

U, C, R, T, G, L models, Switched x 2 100W max(Total) A, B models, Switched x 1 100W max

Dimensions(W x H x D) 435 x 151 x 390.5mm

(17-1/8" x 5-15/16" x 15-3/8")

Weight 10kg(23Ibs.) Accessories Remote Control Transmitter x 1

Indoor FM antenna x 1

AM loop antenna x 1

Battery (size "AAA", "R03") x 4

* Specifications subject to change without notice.

U ......... U. S. A. model A ......... Australian model

C ......... Canadian model B ......... British model

R ......... General model G ......... European model

T.......... China model L..........Singapore model

BL........Black model

GD.........Gold model

TI.........Titan model

●DIMENSIONS

21.5

349.5(13-3/4")

130(5-3/32")

435(17-1/8")

Units: mm (inch)

WARNING

Do not change the IMPEDANCE SELECTOR switch setting while the power to this unit is on, otherwise this unit may be damaged.

IMPEDANCE SELECTOR

Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other worldwide patents issued and pending. "DTS", "DTS Digital Surround", are trademarks of Digital Theater Systems, Inc. Copyright 1996 Digital Theater Systems, inc. All rights reserved.

Manufactured under license from Dolby Laboratories. "DOLBY", "AC-3", "PRO LOGIC", and the double-D symbol are trademarks of Dolby Laboratories. Confidential unpublished works. ©1992-1997 Dolby Laboratories. All rights reserved.

(7/8")

390.5(15-3/8")

19.5 (13/16")

151(5-15/16")

(27/32")

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■ INTERNAL VIEW

BA0987654321

KJIHGFD

■ DISASSEMBLY PROCEDURES

(Remove parts in disassembly order as numbered.)

1. Removal of Top Cover

Remove 4 screws (1) and 4 screws (2) in Fig. 1.

2. Removal of Front Panel

a. Remove 5 knobs. b. Remove 6 screws (3) in Fig. 1.

3. Before Checking and Parts Replacement of Main Amplifier [P.C.B. MAIN (1)]

a. Remove 2 screws (4) fixing the Main Speaker terminal

in Fig. 2. b. Take out the P.C.B. MAIN (3) to Left side in Fig. 4. c. Remove 3 screws (5) fixing the Center/Rear Speaker

terminal and the Heat Sink in Fig. 2. d. Remove the Binding Tie fixing P.C.B. MAIN (1)'s wiring

in Fig. 3.

Note) When the assembling , P.C.B. MAIN (1)'s wiring e. Remove 2 screws (6) fixing the Main Unit in Fig. 3.

f. While pull out the Main Unit to the Front Panel side, g. Connect to ground by shorting between G201 on

h. Insert the insulator seet (Cloth, Paper or equivalent)

i. Insert the insulator seet (Cloth, Paper or equivalent)

j. Using a string, fix the between screw-hole of the Heat Sink

regardfully for ungenerated noise induction.

place the Main Unit on its side as shown in Fig. 4.

P.C.B. MAIN (1) and the chassis.

Note) When unconnected to ground, the protection

function is active.

so that unshorted the between bottom side of P.C.B.

MAIN (1) and the chassis.

so that unshorted the between back side of Front Panel

and the Heat Sink.

and screw-hole of the Front Panel in Fig. 4.

Top Cover

1 POWER TRANSFORMER 2 P.C.B. MAIN (6) 3 P.C.B. MAIN (5) 4 P.C.B. MAIN (2) 5 P.C.B. MAIN (7)

(R, T models only)

6 P.C.B. MAIN (3) 7 P.C.B. MAIN (1) 8 P.C.B. OPERATION (5) 9 P.C.B. OPERATION (6) 0 P.C.B. INPUT (3)

Binding Tie

P.C.B. MAIN (1)

Main Unit

P.C.B. MAIN (1)

G201

A P.C.B. INPUT (1) B P.C.B. TUNER C P.C.B. OPERATION (7) D P.C.B. MAIN (4) E P.C.B. INPUT (2) F P.C.B. OPERATION (2) G P.C.B. OPERATION (1) H P.C.B. OPERATION (4) I P.C.B. OPERATION (3) J P.C.B. INPUT (4) K P.C.B. DSP

4Center/Rear Speaker Terminal

5Rear Panel

Main Speaker Terminal

Heat Sink

String

Fig.2

Main Unit

Heat Sink

Fig.3

Front Panel

Knob

Front Panel

Fig.1

Chassis P.C.B.MAIN (3)

Fig.4

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■

SELF DIAGNOSIS FUNCTION

1. PURPOSE AND OPERATION

The RX-V496/RX-V496RDS/HTR-5240/HTR 5240RDS has a Self Diagnosis Function to locate a faulty part, if any, by inspecting and taking measurements.

There are 12 main items in the diagnostic menu and sub-menu items as listed below.

No.

3 4

MAIN MENU

ANALOG THROUGH

DSP THROUGH

AC–3/DTS THROUGH PRO LOGIC

SPEAKERS SET

DISPLAY CHECK (EFFECT OFF)

MANUAL TEST

FACTORY PRESET

AD DATA CHECK

STATUS INFORMATION FROM DSP

EEPROM WRITING FUNCTION

CHECK SUM/ VERSION/ PORT SETTING/EXIT

SUB-MENU

1. MAIN BYPASS

2. DSP 0dB

1. YSS+SRAM M

2. YSS M

3. DSP FULL BIT

1. STATUS (BINARY FORM)

1. CENTER LARGE

2. EFFECT OFF

1. MAIN : SMALL 0dB

2. MAIN : LARGE 0dB

3. MAIN : LARGE –10dB

4. LFE/BASS : MAIN CENTER : NONE

5. LFE/BASS : MAIN

6. LFE/BASS : SUBWOOFER

7. CENTER : NONE

8. CENTER : SMALL REAR : SMALL

9. FRONT MIX

1. (EFFECT OFF)

2. ALL SEGMENTS TURN OFF

3. ALL SEGMENTS TURN ON

4. ALTERNATE SEGMENTS TURN ON

5. SOFTWARE RELEASE DATE

1. ALL

2. MAIN L

3. CENTER

4. MAIN R

5. REAR R

6. REAR L

7. LFE

1. INHIBIT (Inhibit Memory Initialize)

2. RESERVED (Reserve Memory Initialize)

1. – – –

2. KEY1, KEY2

3. TUNER SIGNAL LEVEL

4. DC PROTECTION

5. PS PROTECTION

1./2. DSP STATUS (1)/(2)

3./4. CHANNEL STATUS (1)/(2)

5./6. BSI0 (1)/(2)

7./8. BSI1 (1)/(2)

9./10. BSI2 (1)/(2)

11./12. BSI3 (1)/(2)

13./14. BSI4 (1)/(2)

15./16. BSI5 (1)/(2)

1. CHECK SUM

MODIFICATION DATA EEPROM DATA

2. WRITING CONFIRMATION

3. START WRITING

1. CHECK SUM

2. VERSION

3. PORT SETTING

4. EXIT

REMOTE CONTROL CODE (KEY)

7A–88 ("1" [DSP mode]) – – –

7A–89 ("2" [DSP mode]) – – – – – –

– – – 7A–8A ("3" [DSP mode])

– – – 7A–8B ("4" [DSP mode])

7A–8C ("5" [DSP mode]) 7A–8D ("6" [DSP mode]) 7A–8E ("7" [DSP mode])

7A–8F ("8" [DSP mode]) 7A–90 ("9" [DSP mode]) 7A–91 ("0" [DSP mode]) – – –

– – – – – –

– – – – – – – – – – – –

– – – – – – – – – – – – – – – – – – – – –

– – – – – –

– – – – – – – – – – – – – – –

– – – – – – – – – – – – – – – – – – – – – – – –

– – –

– – – – – –

– – – – – – – – – – – –

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

2. BEGINNING AND CANCELLATION

(1) Starting up the function and the display

After starting up, main menu No.1 is selected.

A. How to start diagnostic program

Using the front panel keys of the main unit

Plug in the AC power cord. With the Power OFF, hold down the "PRESET/TUNING " and "A/B/C/D/E" keys simultaneously (Step 1), then press the "STANDBY/ON" key (Step 2).

Sub menu No. 1 of the diagnosis main menu No. 1 will start.

FRONT PANEL

"STANDBY/ON" key

"A/B/C/D/E" key

"PRESET/TUNING " key

Step2. Press the "STANDBY/ON" key. Step1. Hold down the "PRESET/TUNING "

and "A/B/C/D/E" key simultaneously.

B. Settings for start-up of diagnostic program

The settings used when starting the diagnostic program are as follows.

EFFECT LEVEL :

CHANNEL CENTER R SUR L SUR SWFR LEVEL (dB) 0 0 0 0

MUTING : OFF

INPUT (VIDEO) : DVD/LD (DVD/LD)

CENTER SPEAKER : LARGE

REAR SPEAKER : LARGE

MAIN SPEAKER : LARGE

LFE/BASS OUT : SWFR

C. Start-up display

The protection history information appears on the front panel display.

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

● FL display at start-up of diagnostic program

When the diagnostic program has started, the check sum of the main microcomputer or the protection history (*1) is displayed. If the protection function has been activated in the past, the type and voltage value are displayed. After a few seconds the diagnosis function menu will appear.

(*1) If a faulty condition is detected such as excessive current, a bad power supply or excessive amplifier DC offset, the Power will be switched OFF automatically.

Note) For the voltages of the power and DC protection functions, see the diagnosis main menu No. 9, which will be described

later. The protection history will be cleared when "RESERVED" is selected in the diagnosis main menu No. 8 and FACTORY PRESET is engaged.

● Protection history

The following examples show how the protection history is displayed:

CHK S U M : X X X X X

IPROTECTION

PS PRT : XX%

DC PRT : XX%

Appears when the protection function has not been activated. Displayed the check sum (4-digit, hexadecimal) and the version (one letter) of the main microcomputer.

Appears when the current protection function has been activated. When power is turned on in an abnormal condition, the power relay will come on, protection will operate immediately, and power will turn off.

Appears when the power supply protection function has been activated. For the % value, the voltage at that point is shown by 5V/100%. When power is turned on in an abnormal condition, power will turn off after half a second.

Appears when the power amp DC protection function has been activated. For the % value, the voltage at that point is shown by 5V/100%. When power is turned on in an abnormal condition, power will turn off after two seconds.

(2) Exiting method

The diagnosis function can be exited by any of the following procedures. Take care with the setting of backup memory initialization menu (diagnosis No. 8) when releasing the diagnosis function.

1. Select sub-menu No. 4 "EXIT" of the diagnosis main menu No. 12.

2. Press the "STANDBY/ON" key on the main unit or "STANDBY" key on the remote control to turn Power OFF.

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

3. OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION

(1) Selection of diagnostic menu

The diagnostic menu and the sub-menu can be selected by using the front panel keys of the main unit or the remote control unit.

● Selection by using the front panel keys of the main unit

The main menu can be changed cyclically by using the "PROGRAM / " keys, and the sub-menu, by using the "PRESET/TUNING / " keys. The " " key will increase the main or sub-menu number.

FRONT PANEL

Reverse Forward Reverse Forward

Main menu Sub-menu

● Selection by using the remote control unit

The remote control codes in the menu list (see right column on page 8) correspond to the DSP program, test and effect keys. See the figure on the right.

7A-88

7A-8B

7A-8E

7A-91

(2) Other functions available while diagnosis function is active

Listed below are the other functions available while the diagnosis function is active.

• Selection of the input (include TAPE MONITOR/EXTERNAL DECODER)

• Effect level control (CENTER, REAR, SUBWOOFER)

• Master volume control

• Muting on/off

• Power on/off

(3) Diagnosis default status

When not otherwise specified, default settings and values in each menu are as follows:

DVD/LD

TEST

TUNER3TAPE/MD

SAT/D-TV6VCR

AUX9EXT.DEC.

100

ENTER

CLEAR

A/B/C/D/E

EFFECT

DISC SKIP

PRESET

7A-89 7A-8A

7A-8C 7A-8D

7A-8F 7A-90

• SPEAKERS : All "LARGE"

• Electronic Volumes : All "0dB"

• DYNAMIC RANGE : MAX

• LFE LEVEL : 0dB (–10dB in AC-3(DOLBY DIGITAL))

• CENTER DELAY : 0ms

4. CONTENTS OF DIAGNOSIS FUNCTION

This section describes the contents of the Self Diagnosis Function in detail.

No.1 ANALOG THROUGH

The input is fixed to analog (A/D). There are two sub-menus.

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

1. MAIN BYPASS

1MAIN BYPASS

The L/R signals bypass the digital circuit, and are output to the MAIN L/R. The L/R signals are output without being processed to the CENTER/SUBWOOFER and REAR L/R through the DSP. (Remote control code 7A-88: "1" key [DSP mode])

CODEC.ADC

ANALOG IN

AC3D2av(YSS918)

MAIN L

MAIN R

CS4227

DECODER

DIR2

DIGITAL IN

YM3436

: This shows that the device is not operating.

2. DSP 0dB

The L/R signals are output without being precessed to the MAIN L/R, CENTER/SUBWOOFER and REAR L/R through the DSP.

1DSP 0dB

DSP

L/R L/R

L/R

1M SRAM

CODEC.DAC

CENTER

SUBWOOFER

CS4227

• INPUT : DVD/LD (Analog signal) (Lch and Rch, 1KHz, –20dBV)

• OUTPUT : SPEAKERS

MAIN L : 24.0 dBV REAR L : 24.0 dBV MAIN R : 24.0 dBV REAR R : 24.0 dBV CENTER: 24.0 dBV

REAR L REAR R

CODEC.ADC

ANALOG IN

CS4227

DIR2

DIGITAL IN

YM3436

: This shows that the device is not operating.

AC3D2av(YSS918)

DECODER

DSP

L/R L/R

1M SRAM

CODEC.DAC

L/R

• INPUT : DVD/LD (Analog signal)

• OUTPUT : SPEAKERS

CS4227

(Lch and Rch, 1KHz, –20dBV)

MAIN L : 24.0 dBV REAR L : 24.0 dBV MAIN R : 24.0 dBV REAR R : 24.0 dBV CENTER: 24.0 dBV

SUBWOOFER

MAIN L MAIN R

CENTER

REAR L REAR R

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.2 DSP THROUGH

The input is automatically discriminated by signal detection and switched with priorities Coaxial>Optical>Analog. There are the following three sub-menus.

1. YSS+SRAM

2 YSS+SRAM M

The L/R signals are output without being processed to the MAIN L/R, CENTER/SUBWOOFER through the DSP. The L/R signals are output without being processed to the REAR L/R through the DSP and the SRAM. (Remote control code 7A-89:"2" key [DSP mode])

CODEC.ADC

ANALOG IN

AC3D2av(YSS918)

CS4227

DECODER

DIR2

DIGITAL IN

YM3436

2. YSS M

Same as "2. DSP 0dB" of "No.1 ANALOG THROUGH", except for the input switching.

2 YSS M

L/R

DSP

L/R L/R

1M SRAM

L/R

CODEC.DAC

SUBWOOFER

CS4227

• INPUT : DVD/LD (Analog signal) (Lch and Rch, 1KHz, –20dBV)

• OUTPUT : SPEAKERS

MAIN L : 24.0 dBV REAR L : 24.0 dBV MAIN R : 24.0 dBV REAR R : 24.0 dBV CENTER: 24.0 dBV

MAIN L MAIN R

CENTER

REAR L REAR R

CODEC.ADC

ANALOG IN

AC3D2av(YSS918)

CS4227

DECODER

DIR2

DIGITAL IN

YM3436

: This shows that the device is not operating.

3. DSP FULL BIT

Same as the above menu, except that the head margin is disabled, and the digital data is output with full bits from AC3D2av to DAC.

2DSP FULL BIT

L/R

DSP

1M SRAM

L/R

CODEC.DAC

SUBWOOFER

CS4227

• INPUT : DVD/LD (Analog signal) (Lch and Rch, 1KHz, –20dBV)

• OUTPUT : SPEAKERS

MAIN L : 24.0 dBV REAR L : 24.0 dBV MAIN R : 24.0 dBV REAR R : 24.0 dBV CENTER: 24.0 dBV

• INPUT : DVD/LD (Analog signal) (Lch and Rch, 1KHz, –30dBV)

• OUTPUT : SPEAKERS

MAIN L : 14.0 dBV REAR L : 23.3 dBV MAIN R : 14.0 dBV REAR R : 23.3 dBV CENTER: 17.2 dBV

MAIN L

MAIN R

CENTER

REAR L

REAR R

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.3 AC-3/DTS THROUGH

The input is digital signal only. AC-3 (DOLBY DIGITAL) or DTS Digital Surround decoding operation is executed, according to the input source.

bit 7

bit 1

1. STATUS(BINARY FORM)

3 ST:00010000

AC-3 (DOLBY DIGITAL) decoded signals are output to each channel via AC3D2av. The AC-3 (DOLBY DIGITAL) signal status data will be displayed in the FL display using a binary number.

CODEC.ADC

ANALOG IN

AC3D2av(YSS918)

CS4227

L/R

DSP

L/R

CODEC.DAC

C/LFE

LS/RSLS/RS

SUBWOOFER

CS4227

DIGITAL IN

DIR2

DECODER

DOLBY DIGITAL

PRO LOGIC

DTS

C/LFE

YM3436

: This shows that the device is not operating.

AC-3 Status Info. : bit7 6 5 4 3 2 1 0

(Invalid in DTS) 0 0 0 10000

IEC958 digital data bit IEC958 commercial-use device bit

IEC958 digital format error Demodulator muting (without RF signal)

1 for audio other than PCM linear audio 1 during red DTS lock 1 during DTS decode OK 1 during AC-3 decode OK

1M SRAM

MAIN L MAIN R

CENTER

REAR L REAR R

No.4 PRO LOGIC

The submenu is switched between PRO LOGIC (AUTO BALANCE OFF) and EFFECT OFF.

1. CENTER LARGE

4PROCNTR:LRG

The input is automatically discriminated by signal detection and switched with priorities Coaxial>Optical>Analog. DTS Digital Surround is disabled. The input signals are PRO LOGIC decoded and output. (Remote control code 7A-8A: "3" key [DSP mode])

CODEC.ADC

ANALOG IN

AC3D2av(YSS918)

CS4227

L/R

DSP

L/R

CODEC.DAC

CS4227

DIGITAL IN

DIR2

DECODER

DOLBY DIGITAL

PRO LOGIC

DTS

YM3436

• INPUT : DVD/LD (Analog signal) (Lch and Rch, or Lch only, 1KHz, –20dBV)

1M SRAM

2. EFFECT OFF

4PROEFCT:OFF

The input is only for analog signal. The L/R signals bypass the digital circuit and are output to the MAIN L/R.

• OUTPUT : SPEAKERS (INPUT : Lch and Rch ) (INPUT : Lch only)

MAIN L : –12.5 dBV MAIN L : 24.0 dBV MAIN R : –12.5 dBV MAIN R : –19.0 dBV CENTER: 27.0 dBV CENTER : –10.0 dBV REAR L : –9.0 dBV REAR L : –9.0 dBV REAR R : –9.0 dBV REAR R : –9.0 dBV

MAIN L MAIN R

CENTER

REAR L REAR R

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.5 SPEAKERS SET

The input is automatically discriminated by signal detection and switched with priorities Coaxial>Optical>Analog. The L/R signals are output to channels specified by the sub-menu without being processed. There are the following nine sub-menus items. Signal routes of the sub-menu 1-4 are the same as EFFECT OFF. But MAIN L/R are signals through the digital circuit. Signal routes of the sub-menu 5-9 are the same as "2. YSS M" of "No. 2 DSP THROUGH". However, only MAIN L/R are output in the sub-menu 1-4.

5MAIN:SML0dB

5 B:MAIN C:NON

5 C:NONE

5MAIN:LRG0dB

5LFE/B:MAIN

5 C:S REAR: S

5MAIN:LRG-10

5 LFE/B:SWFR

5FRONTMIX

The analog switches in each sub-menu are set as follows:

SUB MENU

1 MAIN:SML 0DB 7A-8B LARGE LARGE SMALL 0dB SWFR L R NONE NONE NONE L+R 2 MAIN:LRG 0DB 7A-8C LARGE LARGE LARGE 0dB SWFR L R NONE NONR NONE NONE 3 MAIN:LRG -10 7A-8D LARGE LARGE LARGE -10dB SWFR L R NONE NONE NONE NONE 4 B:MAIN C:NONE 7A-8E NONE LARGE LARGE 0dB MAIN L R NONE NONE NONE NONE 5 LFE/B:MAIN 7A-8F LARGE LARGE LARGE 0dB MAIN 6 LFE/B:SWFR 7A-90 LARGE LARGE LARGE 0dB SWFR NONE NONE NONE NONE NONE LFE 7 C:NONE 7A-91 NONE LARGE LARGE 0dB SWFR C+L C+R NONE NONE NONE LFE 8 C:S REAR:S – – – SMALL SMALL LARGE 0dB SWFR FL FR C RL RR 9 FRONT MIX 7A-12 LARGE LARGE LARGE 0dB SWFR FL FR NONE NONE NONE NONE

REMOTE

CONTROL

CODE

CENTER SP

MAIN SPREAR SP

MAIN

LEVEL

LFE/BASS

MAIN

LFE LFE

OUTPUTSETTING

REAR

CENTER

REAR

C NONE NONE NONE

SUB

WOOFER

C+RL+RR+LFE

LARGE: Mode in which speakers with high bass-sound playback capability (large unit) are used. Full-range signals present

on the channel are output from the speaker.

SMALL: Mode in which speakers with low bass-sound pla yback capability (small unit) are used. Low bass signals (below

90Hz) on the channel are mixed into the channel selected by the LFE/BASS setting. NONE: Mode in which center speaker is not used. The center channel signal is reduced by 3 dB and mixed into MAIN L/R. LFE/B:MAIN

:Mode in which subwoofer speaker is not used. The LFE channel signal is reduced by 4.5 dB and mixed into

MAIN L/R. But because of the phase difference, the MAIN L/R output is not simply summed.

Description of the submenu as follows:

SUB MENU DESCRIPTION

1 MAIN:SML 0DB Verification of the High and low pass filter response and gain in the bass redirection mode. 2 MAIN:LRG 0DB Reference of the sub menu No. 1 and 3. 3 MAIN:LRG -10 Verification of the effect in the main level function. 4 B:MAIN C:NONE Verification of the mixing circuit effect to the main channel. 5 LFE/B:MAIN Verification of the bass mix gain. 6 LFE/B:SWFR Verification of the LFE maximum output. 7 C:NONE Verification of the center mix gain. 8 C:S REAR:S Verification of the high and low pass filter response and gain in the bass redirection mode. 9 FRONT MIX Verification of the front mix gain.

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.6 DISPLAY CHECK

Check program for FL display. The display status will change as follows with sub-menu operation. signal route is the same as "2. EFFECT OFF" of "No. 4 PRO LOGIC".

6 VFD CHCK

Initial display All segments turn off All segments turn on (See page 35)

A defect of the FL drive port and FL display segments can be detected by using "All segments turn off" and "All segments turn on". A short-circuit between adjacent segments can be detected by using "Alternate segments turn on" (lattice form).

(lattice form)

Alternate segments turn onSoftware Release date display

No.7 MANUAL TEST

By using the noise generator built into the DSP, a test noise outputs to the channel specified by the sub-menu.

7TESTALL

7TESTMAINR

7TESTMAINL

7 TEST REAR R

7 TEST CENTER

7 TEST REAR L

7TESTLFE

No.8 FACTORY PRESET

The initialization of the back-up RAM, which contains, the DSP program, set menu contents, etc. is reserved or inhibited. Signal route is the same as "2. EFFECT OFF" of "No.4 PRO LOGIC".

8PRESETINHI

8 PRESET RSRVD

Caution : Before setting to the PRESET RESERVED, write down the existing preset memory contents of the Tuner in

a table as shown below. (This is because setting to the PRESET RESERVED will cause the memory contents to be as factory set, i.e., all the preset memory by the user will be erased.)

Page P1 P2 P3 P4 P5 P6 P7 P8

A B C D E

1. INHIBITED: Inhibits initialization of the back-up RAM. Specify this option protect user set values.

2. RESERVED: Reserve to initialization of the back-up RAM. (The RAM is actually initialized when power is turned on next time.) Specify this option at the factory preset or to reset the RAM. For the contents of the initialization, see page 20. The protection data is also reset.

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.9 AD DATA CHECK

The A/D conversion values of the microcomputer which detects key scan port, protection detection port, etc. are displayed in % (100%:5V). Signal route is the same as "2. EFFECT OFF" of "No. 4 PRO LOGIC". The keys on the main unit cannot be operated to detect the values of all keys in the K1/K2 and SI. Operating the "PRESET/TUNING , "key and turning the rotary encoder ("INPUT SELECTOR" on the main unit) will switch the sub-menu.

9 AD DATA CHK

9 K1: 100K2 :100

9SI: 0

9DC: 7

Initial display. For return to the PS menu, press the "PRESET/TUNING " key.

Press the "PRESET/TUNING " key. K1/K2: Panel key on the main unit.

(See Table 1.)

Turning the "INPUT SELECTOR". SI: Tuner signal sensitivity level For return to the K1/K2 menu, press the "PRESET/TUNING "key.

Press the "PRESET/TUNING " key. DC: DC protection value

(normal value: 1-13)

For return to the SI menu, press the "PRESET/TUNING "key.

9PS:30

Press the "PRESET/TUNING " key. PS: Power voltage protection value

(normal value: 23-38) For return to the DC menu, press the "PRESET/TUNING "key. For return to the initial display, press the "PRESET/TUNING "key again.

Table 1

AD Value

01424354555657585

PROGRAM

EFFECT

PRESET/TUNING

INPUT MODE

TAPE/MD MON

/EXT DECODER

PRESET /TUNING

EDIT

EFFECT

FM/AM

RDS MODE

/FREQ

MEMORY

MAN'L/AUTO FM

EON

TUNING

MODE

AUTO/MAN'L

MONO

Cautions:

1. If K1 and K2 are more than ±4% from the reference values, normal operation will not be executed.

2. If DC and PS are outside the normal values, the protection function will operate and power will turn off.

MODE

PTY SEEK

START

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.10 STATUS INFORMATION FROM DSP

The status data from the DSP block is sequentially displayed in a hexadecimal number. Signal route is the same as "2. EFFECT OFF" of "No. 4 PRO LOGIC".

High

Low

[CPU/1]

[CPU/2]

10 CPU/1 00 00 10 CHS/2 00 00 10 BI2/1 00 00

10 CPU/1 00 00 10 BI0/1 00 00 10 BI2/2 00 00

10 CHS/2 00 00 10 BI0/2 00 00 10 BI3/1 00 00

10 BI3/2 00 00 10 BI4/1 00 00 10 BI4/2 00 00

10 BI5/1 00 00 10 BI5/2 00 00

bit7 Mute request bit3 acmod bit6 fs bit2 bit5 bit4 bit0

[Note]

When acmod is beyond 1000B, it is DTS 7.1 signal. And the DSP block will be muted. The acmod of DTS 2/0 is as 0000B:1+1.

bit7 AC-3 DECODE OK bit3 bit6 DTS DECODE OK bit2 IEC958 digital format error bit5 bit4

[Note]

IEC958: Standard to identify the PCM bit stream signal. Digital format error refers to a digital signal with the sampling frequency undefined (neither 32k,44.1k,48k,64k,88.2k nor 96k). Since the operation of each device cannot be assured at fs outside specifications, this status handled as the forced analog mode (ignored even if decoding is OK from the detection terminal level), and the signals from the analog input terminal will be selected. Bits 4-6 of "CPU/1" will be 000B (Analog), and the microcomputer operates in the same way as with digital unlocking.

000B:Analog 001B:32kHz 010B:44.1kHz 011B:48kHz 100B:64kHz 101B:88.2kHz 110B:96kHz 111B:undefined

Red DTS record (Flashes and lights)

1 for audio other than PCM linear audio

bit1

bit1 IEC958 commercial-use device bit bit0 IEC958 digital data bit

0000B:1+1 0001B:1/0 0010B:2/0 0011B:3/0 0100B:2/1 0101B:3/1 0110B:2/2 0111B:3/2 1000B:7.1

DEM (Demodulator) MUTE (without RF signal)

Indicate

bit 7 6 5 4 3 2 1 0

Indicate bit

3210 7654

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

111

bit7 AC3 KARAOKE bit3 1 bit6 DIR2 LOCKN bit2 0 bit5 DIR2 ERR bit1 DSP is AC3D2 (DTS present) bit4 AC3D MUTE bit0 RF DEM (Demodulator) present

<Low Byte> Always “00”

[CHS/1,/2] IEC958 channel status bits 00-31 available from DIR2.

<CHS/1 High Byte> bits 00-07 <CHS/1 Low Byte> bits 08-15 <CHS/2 High Byte> bits 16-23 <CHS/2 Low Byte> bits 24-31

[BI0/1,/2] Displays the bit stream information contained in AC-3(DOLBY DIGITAL)/DTS Digital Surround signal from the first byte. [BI1-5/1,/2] Displays the bit stream information contained in AC-3(DOLBY DIGITAL) signal from the first byte.

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

No.11 EEPROM WRITING FUNCTION

The check sum value confirmation of EEPROM and data writing. Signal route is the same as "2. EFFECT OFF" of "No. 4 PRO LOGIC".

M:XXXX E:XXXX

M:XXXX: The check sum value is displayed when the microcomputer has ROM

modification data. 0000 is displayed when there is no data.

E:XXXX: The check sum value is displayed when the EEPROM is installed on and

it has the ROM data . 000 is displayed when EEPROM is not mounted on or data is unusual. If you want to write ROM modification data of the microcomputer into the EEPROM, change to the next sub-menu.

No.12 CHECK SUM/VERSION/PORT SETTING/EXIT

The version, the check sum, and the port setting of the microcomputer are displayed. Signal route is the same as "2. EFFECT OFF" of "No.4 PRO LOGIC". By the sub-menu operation, the set exits the self-diagnousis mode and returns to the normal operation mode.

12 SUM:9549A

Check sum

12 VER:A01

SUM: 9549A : The check sum of the microcomputer software is displayed.

VER:A01 : The version of the microcomputer software is displayed.

Version

12 P:01000100

EXIT

*1 Model type distinction (H=1, L=0)

DSP-A (Pin 3) 0 0 1 1 RX-V396RDS RDS (Pin 6) 0 1 0 1 HTR 5230RDS

*2 Destination distinction of Tuner (H=1, L=0)

V1 (Pin 4) 0 J 0 U,C 1 A,B,G 1 R,T V2 (Pin 5) 0 model 1 models 0 models 1 models

bit 76543210

01000100

RX-V396

DSP-EDSP-A

HTR-5230

DSP-R396

Always absent (0) Always absent (0) Tuner Mode V1 (*2) Tuner Mode V2 (*2) Always absent (0) Always absent (0) Model Type RDS (*1) Model Type DSP-A (*1)

■ FACTORY PRESET

All of the system settings are initially set from the factory as follows.

●

INPUT SELECTOR

INPUT FACTORY PRESET PROGRAM

PHONO CONCERT HALL

CD DISCO

ROTARY TUNER ROCK CONCERT

ENCODER DVD/LD SCI-FI

SAT/D-TV TV SPORTS

VCR DOLBY NORMAL

V-AUX DOLBY ENHANCED

MONITOR TAPE/MD EFFECT OFF

EXTERNAL EXT. DECODER NONE

●

DSP PROGRAM

No. PROGRAM SUB-PROGRAM DELAY PRESET VALUE

3. 70mm : 20ms, DGTL/DTS : 15ms

4. MONO MOVIE – 49ms

5. TV SPORTS – 9ms

6. DISCO – 40ms

7. ROCK CONCERT – 16ms

8. CONCERT HALL – 44ms

●

SET MENU

No. SET MENU PRESET VALUE

1. CENTER SP SIZE CENTER SP : LRG(LARGE)

2. REAR SP SIZE REAR SP : LARGE

3. MAIN SP SIZE MAIN SP : LARGE

4. BASS OUT MODE BASS OUT : BOTH

5. M. LVL CHOICE MAIN LVL : NRML (NORMAL)

6. D. D. LFE OUT LEVEL D. D. LFE 0 dB

7. D. RNG CHOICE D-RANGE : MAX

8. DTS LFE OUT LEVEL DTS LFE 0 dB

9. C. DELAY CHANGE CENTER DELAY 0ms

10.

11.

DOLBY/DTS NORMAL PRO LOGIC : 20ms, SURROUND ENHANCED DOLBY DIGITAL/DTS DIGITAL SUR : 5ms

MOVIE THEATER SPECTACLE 70mm : 23ms, DGTL/DTS : 15ms

1 SCI-FI 70mm : 20ms, DGTL/DTS : 16ms

MOVIE THEATER ADVENTURE

2 GENERAL

MEMORY GUARD MEM. GUARD : OFF INPUT MODE SAT/D-TV SAT INPUT : AUTO

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

●

EFFECT LEVEL

EFFECT CHANNEL PRESET VALUE

CENTER 0 dB RIGHT SURROUND 0 dB LEFT SURROUND 0 dB SUBWOOFER 0 dB

●

PRESET STATIONS

STATION FM FACTORY PRESET DATA (MHz)

PAGE NO. U, C R, T, A, B, G, L

1 87.5 87.5 2 90.1 90.1 3 95.1 95.1

A/C/E 4 98.1 98.1

5 107.9 108.0 6 88.1 88.1 7 106.1 106.1 8 107.9 108.0

STATION AM FACTORY PRESET DATA (kHz)

PAGE NO. U, C, R R, T, A, B, G, L

1 630 630 2 1080 1080 3 1440 1440

B/D 4 530 531

5 1710 1611 6 900 900 7 1350 1350 8 1400 1404

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

■ AMP ADJUSTMENT

Confirmation of Idling Current of Main Amplifier

Right after power is turned on, confirm that the voltage across the

•

terminals of R239(Main Lch),R245(Main Rch), R262(Center), R252(Rear Lch), R258(Rear Rch) are between 0.1mV and 5.0mV. If it exceeds 5.0mV, open (cut off) R213 (Main Lch), R218 (Main

•

Rch), R233 (Center), R223 (Rear Lch), R228 (Rear Rch) and reconfirm the voltage. Confirm that the voltage is 0.25mV ~ 15.0mV after 60 minutes.

•

R233

0.1mV ~ 5.0mV (DC)

MAIN (1)

R218

R262

R258

R252

R245

R228

R223

OPE (5)

Q214

Q211

Q208

Q205

R239(Lch) R245(Rch) R262(Cch) R252(RLch) R258(RRch)

Cut off

R213(Lch) R218(Rch) R233(Cch) R223(RLch) R228(RRch)

Note)

• If R213, R218, R233, R223 and R228 have already been cut off and idling current does not flow, reconnect R213, R218,R233,R223 and R228.

• Q202,Q205,Q208,Q211 and Q214 are transistors for temperature correction. Apply silicone grease to contact surface with the heat sink.

R239

Q202

R213

Front Panel

■ TUNER ADJUSTMENT

RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

●Measuring Instruments

1) FM signal generator (FM SG)

2) Stereo signal generator (SSG)

3) AM signal generator (AM SG)

4) Distortion meter (DIST. M)

5) AC Voltmeter (ACVM)

6) DC Voltmeter (DCVM)

7) Oscilloscope

8) Low pass filter (YLF-15, fc=15kHz)

9) Oscillator

●Dummy antenna

FM SG (50Ω)

E2 (dB) = E1 (dB) -6 (dB)

FM SG (75Ω)

AM SG (50Ω)

FM dummy antenna

10Ω 45Ω

60Ω

FM dummy antenna

E2 (dB) = E1 (dB)

AM loop antenna

AM dummy antenna

10KΩ

50Ω

RECEIVER (75Ω)

AM ANT

GND

●Test point

AM SENSITIVITY ADJ.

FM ANT

GND

AM ANT

MONAURAL DISTORTION ADJ. (ANTENNA)

PK2

PK1

FRONT END

IC1

TP1

A, B, G, L models only

VR1

TP2

IFT

SIGNAL METER ADJ.

IC2

IC3

VR2

CB4

IFT

A, B, G, L modelsU, C, R, T models

IC4

(RDS model)

B, G models only

Front Panel

DISCRIMINATOR BALANCE ADJ. (FRONT)

SEPARATION ADJ.

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