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5

6-92. Printed Wiring Board – AC Board (TYPE A) – ............. 124
6-93. Printed Wiring Board – AC Board (TYPE B) – ............. 124
6-94. Schematic Diagram – AC Board – ................................. 125

7-1.

Case Section ................................................................... 173

7-2.

DIGITAL Board Section ................................................ 174

7-3.

D-VIDEO Board Section ................................................ 175

7-4.

DISPLAY Board Section ................................................ 176

7-5.

Front Panel Section ........................................................ 177

7-6.

A-VIDEO Board Section ................................................ 178

7-7.

ANALOG Board Section ............................................... 179

7-8.

Heat Sink Section ........................................................... 180

7-9.

MAIN Board Section ...................................................... 181

............................... 182

Note 1: Refer “NOTE WHEN THE AC BOARD IS REPAIRED”

(page 5) in servicing notes for how to distinguish TYPE
A/B.

Note 2: Refer to SUPPLEMENT-1 for the CONTROL, DIGITAL and

DSP boards of printed wiring boards, schematic diagrams
and electrical parts list of Russian and Ukrainian models.
When repairing the set of US, Canadian, AEP and UK
models, refer to either of original service manual/SUPPLE-
MENT-1 according to the set.

Note 3: Refer to SUPPLEMENT-1 for the CONTROL, DIGITAL and

DSP boards of printed wiring boards, schematic diagrams
and electrical parts list of Chinese model.
Refer to SUPPLEMENT-2 for the A-CLASS AMP, D-CON-
NECT and E-VOL boards of printed wiring boards, sche-
matic diagrams and electrical parts list of Chinese model.
When repairing the set except Chinese model, refer to
either of original service manual/SUPPLEMENT-1/
SUPPLEMENT-2 according to the set.

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.

•

Unleaded solder melts at a temperature about 40 

°

C higher

than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350 

°

C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

•

Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)

than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

•

Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

Replacement of IC3601 on the D-VIDEO board used in this set
requires a special tool.

AEP, Russian, Ukrainian and UK models uses only TYPE B.

Two types exist in the AC board for US and Canadian models.
Repair after distinguishing which type it is referring to the figure
below.

JW003

TYPE A : JW003 is not mounted.
TYPE B : JW003 is mounted.

6

•

Model

PART No.

US and Canadian models

3-113-954-1[]

AEP and Chinese models

3-113-954-2[]

UK model

3-113-954-3[]

Russian and Ukrainian models

3-113-954-4[]

PART No.

IC3511 and IC3513 on the D-VIDEO board cannot exchange with
single. When IC3511 and IC3513 on the D-VIDEO board are
damaged, exchange the entire mounted board.

IC5002 and IC5202 on the DSP board cannot exchange with single.
When IC5002 and IC5202 on the DSP board are damaged, exchange
the entire mounted board.

Perform operation of the following when the update of software of
the IC2003 on the CONTROL board, IC3610 on the D-VIDEO board
and IC5208 on the DSP board is necessary.

1. Connect J1499 on the MAIN board and PC by using the RS-

232C cable.

2. Turn on the main power.
3. The update is executed by using PC.
4. When the update ends, turn off the main power.
5. Remove the RS-232C cable from the J1499 on the MAIN board

and PC.

If there is a malfunction, the display shows a code of two numbers
and a message. You can check the condition of the system by the
message. Refer to the following table to solve the problem.

messages

cause and response

PROTECTOR

Irregular current is output to the speakers, or
the upper panel of the receiver is covered with
something. The receiver will automatically
turn off after a few seconds. Cheack the speak-
ers connection and turn on the power again.

for PC

J1499

7

In checking the Power AMP block, prepare jig (extension cable J-2501-291-A: 2 mm Pitch, 12 cores, Length 300 mm/J-2501-311-A: 2 mm
Pitch, 15 cores, Length 300 mm).

insulating sheet

Connect the extension jig (J-2501-311-A) to the
A-CLASS AMP board (CN1505) and
E-VOL board (CN1202).

E-VOL board
(CN1202)

A-CLASS AMP board
(CN1505)

power AMP Block

Connect the extension jig (J-2501-291-A) to the
A-CLASS AMP board (CN1504) and
E-VOL board (CN1201).

E-VOL board
(CN1201)

A-CLASS AMP board
(CN1504)

In checking the CONTROL board, prepare jig (extension cable J-2501-255-A: 1.25 mm Pitch, 10 cores, Length 300 mm/J-2501-258-A: 1.25
mm Pitch, 16 cores, Length 300 mm/J-2501-259-A: 1.25 mm Pitch, 18 cores, Length 300 mm/J-2501-260-A: 1.25 mm Pitch, 20 cores,
Length 300 mm).

connect jig (extension cable J-2501-260-A) 
to the CONTROL board (CN2006) 
and MAIN board (CN1005).

connect jig (extension cable J-2501-255-A) 
to the CONTROL board (CN2008) 
and MAIN board (CN1006).

connect jig (extension cable J-2501-258-A) 
to the CONTROL board (CN2004) 
and D-CONNECT board (CN2403).

CONTROL board
(CN2006)

connect jig (extension cable J-2501-259-A) 
to the CONTROL board (CN2005) 
and D-CONNECT board (CN2405).

CONTROL board
(CN2008)

MAIN board
(CN1006)

MAIN board
(CN1005)

CONTROL board
(CN2004)

CONTROL board
(CN2005)

D-CONNECT board
(CN2403)

D-CONNECT board
(CN2405)

insulating sheet

8

In checking the DIGITAL board, prepare jig (extension cable J-2501-312-A: 1.25 mm Pitch, 11 cores, Length 300 mm).

In checking the D-VIDEO board, prepare two jig (extension cable J-2501-259-A: 1.25 mm Pitch, 18 cores, Length 300 mm).

connect jig (extension cable J-2501-312-A) 
to the DIGITAL board (CN2203) 
and CONTROL board (CN2002).

CONTROL board
(CN2002)

DIGITAL board
(CN2203)

Connect jig (extension cable J-2501-259-A) 
to the D-VIDEO board (CN3507) and
CONTROL board (CN2001).

CONTROL board
(CN2001)

D-VIDEO board
(CN3507)

Connect jig (extension cable J-2501-259-A) 
to the D-VIDEO board (CN3508) and
CONTROL board (CN2009).

CONTROL board
(CN2009)

D-VIDEO board
(CN3508)

S-VIDEO board