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5

The identification of errors within the AE-5 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event 
of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with continuous flashing LED) and
then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be dis-
played through the LED (Series of flashes which must be counted) See table 1., non fatal errors are reported using this method. 

 No error

00

Not allowed (may be confused with Sircs response 
flash!)

01

Over Current Protection

02

Over Voltage Protection

03

Vertical Protection

04

AKB

05

H - Protection

06

Speaker Protection

07

General IIC Line 0 error

08

MEGATEXT

09

NVM

10

Main colour decoder

11

Feature Box

12

D/A converter

13

Backend

14

Multi sound processor

15

Auto Wide

16

External RAM

17

StBy LED

ON

ON

ON

OFF

OFF

Diagnostic Item

Description

No of times Standby 

LED Flashes

Probable cause

Location

Detected Symptoms

Power does not turn on 

Does not light

Power cord is not plugged in
Fuse is burned out

Power does not come on
No power is supplied to the TV
AC power supply is faulty

+B Overcurrent (OCP)

2 times

H.OUT (Q6803/6804) is shorted. (D Board)
Linearity FET (Q6806) is shorted. (D Board)
IC6604 Power IC  is shorted. (D Board)

Power does not come on

Load on power line has shorted

Vertical Deflection stopped

4 times

+15V is not supplied R6835 open (D Board)

-15V  is not supplied R6834 open (D Board)
IC6700 is shorted (D Board)

Vertical deflection pulse has stopped
Power line has shorted

6

Device acknowledge is used to check IIC errors. Device acknowledge is checked by sending an IIC start sequence during CRT power on. Each 
device is checked three times, if there is no acknowledge after every attempt, it will be regarded as an error.
There are three steps to check errors

1. IIC line 0

If all devices except the NVM have errors, IIC line 0 error is displayed

2. Board check

If all devices mounted on one board have errors, board error is displayed

3. Each device check

If IIC line error and board error are not detected then the device with an error is displayed

The detected errors can be displayed as follows:

1. Error Monitor Menu
2. Error Reader

The error monitor menu is displayed by selecting TT33. The following menu will be displayed:

930360h 15h

1. 100h = A-Board
2. 401h = BP-B CXD2069 MID
3. 704h = J-B TDA9320 Main Col Dec
4. 000h = no error occured
5. 000h = no error occured

New error code sequence is starting

Ignore Errors :                                 [off]

7

The error reader display is connected to the service connector to read actual error codes. The part number for the error reader display is  S-188-900-10. 
Once an error has been detected it will then be displayed on the two digit error reader. The errors displayed refer to the following table :

Send Data to Error Reader

Error Code

Data high

Data Low

Error type

Function

00 00h

-

f0h

no device

00 01h

f0h

01h

IIC 0 line

00 02h

f0h

02h

IIC 1 line

not used

01 00h

f1h

00h

A Board

02 00h

f2h

00h

B1 Board

03 00h

f3h

00h

B2 Board

04 00h

f4h

00h

BP Board

05 00h

f5h

00h

D1 Board

06 00h

f6h

00h

E Board

07 00h

f7h

00h

J Board

A Board

01 01h

f1h

01h

CXA1875

Port Expander

01 02h

f1h

02h

TU1326

Main Tuner

01 03h

f1h

03h

TU1350

Sub Tuner

B1 Board

02 01h

f2h

01h

P83C654

Feature Box

02 02h

f2h

02h

SDA9280

D/A Converter

B2 Board

03 01h

f3h

01h

SAA4977

Basic

03 02h

f3h

02h

SAA4950

Memory

BP Board

04 01h

f4h

01h

CXD2069

MID

D1 Board

05 01h

f5h

01h

CXA8070

Dynamic Conv.

05 02h

f5h

02h

CXA1875

Port Expander

E Board

06 01h

f6h

01h

CXD2100

Backend

J Board

07 01h

f7h

01h

CXD2057

Auto Wide

07 02h

f7h

02h

SDA9288

PIP

07 03h

f7h

03h

TDA9320

Sub Colour

07 04h

f7h

04h

TDA9320

Main Colour

07 05h

f7h

05h

CXA1875

Sub Sound

07 06h

f7h

06h

TDA7309

HP Amp

07 07h

f7h

07h

TEA6422DT

Audio SW

07 08h

f7h

08h

MSP3410D

Sound Proc

07 09h

f7h

09h

TC9337F

Sound DSP

8

WARNING !!

AN ISOLATING TRANSFORMER SHOULD BE USED DURING ANY
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE POWER LINE.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY SHADING AND MARKED

ON

THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL FOR SAFE  OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS 
PUBLISHED BY SONY.

ATTENTION !!

AFIN D’EVITER TOUT RISQUE D’ELECTROCUTION PROVENANT
D’UN CHÁSSIS SOUS TENTION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE.
LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ
Á L’ALIMENTATION SECTEUR.

ATTENTION AUX COMPOSANTS RELATIFS  Á LA

SÈCURITÈ  !!

LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE 

MARQUE

SUR LES SCHÈMAS DE PRINCIPE, LES VUES 

EXPLOSÈES ET LES LISTES DE PIECES SONT D’UNE IMPORTANCE
CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES
REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO
DE PIÈCE EST INDIQUÈ DANS LE  PRÈSENT MANUEL OU DANS
DES SUPPLÈMENTS PUBLIÈS PAR SONY.

Warning and Caution

.....................3

Self-Diagnostic Function

.....................5

Overview

.....................9

First time operation

.....................10

Advanced Operations

.....................11

Teletext

.....................16

2-1.

Rear Cover Removal

.....................17

2-2.

Chassis Assy Removal

.....................17

2-3.

Service Position

.....................17

2-4.

U Board Removal

.....................17

2-5.

J Board Removal

.....................18

2-6.

J Shield Romoval

.....................18

2-7.

B2 Board Removal

.....................18

2-8.

Picture Tube Removal

.....................19

2-9.

Removal and Replacement of the
Main-Bracket bottom plates

.....................20

3-1.

Beam Landing

.....................21

3-2.

Convergence

.....................22

3-3.

Focus

.....................24

3-4.

Screen [G2] White Balance

.....................24

4-1.

Electrical Adjustments

.....................26

4-2.

Volume Electrical Adjustments

.....................31

4-3.

Test Mode 2

.....................33

5-1.

Block Diagram (1)

.....................35

Block Diagram (2)

.....................39

Block Diagram (3)

.....................43

Block Diagram (4)

.....................48

5-2.

Circuit Board Location

.....................53

5-3.

Schematic Diagrams and
Printed Wiring Boards

.....................53

*

C Board

.....................55

*

J Board

.....................63

*

U Board

.....................72

*

A Board

.....................79

*

B2 Board

.....................83

*

VM Board

.....................88

*

D1 Board

.....................93

*

M Board

.....................97

*

E Board

.....................101

*

D Board

.....................109

*

F1 Board

.....................113

*

F Board

.....................114

*

H1 Board

.....................115

5-4.

Semiconductors

.....................117

5-5.

IC Blocks

.....................120

6-1.

Chassis

.....................121

6-2.

Picture Tube

.....................122

.....................123