Sony STR-DE1015G Service Manual ▷ View online
— 26 —
SECTION 3
DISASSEMBLY
3-2. BALANCE BOARD, DISPLAY BOARD AND VOLUME BOARD
0
DISPLAY board
8
Four screws
(BVTP2.6x8)
9
Remove the four claws.
7
Two screws
(BVTP2.6x8)
4
Two screws
(BVTP2.6x8)
5
BALANCE board and
VOLUME board
6
Bracket
3
Knob
(Balance)
1
Knob
(Volume)
2
Nut
Note:
Follow the disassembly procedure in the numerical order given.
3-1. FRONT PANEL
1
Three screws
(BVTP3x8)
2
Screw
(BVTP3x8)
3
Flat type wire (19 core)
(CNS701)
4
Flat type wire (CNJ203)
5
Flat type wire (21 core)
(CN3301)
8
Flat type wire (19 core)
(CNS402)
7
Front panel
6
Three screws
(BVTP3x8)
— 27 —
SECTION 4
TEST MODE
Self-Diagnosis and Test Mode
This unit is provided with a “self-diagnosis and self-recovery func-
tion” which detects DSP errors and automatically recovers the unit,
and a test mode for performing operation checks during repairs.
tion” which detects DSP errors and automatically recovers the unit,
and a test mode for performing operation checks during repairs.
1. MAIN FUNCTIONS
• DSP self-diagnosis program for servicing and operation check
mode.
2. ENTERING THE TEST MODE
While pressing the MODE button and AUDIO FUNCTION <
button simultaneously in the power OFF state, press the POWER
button.
button simultaneously in the power OFF state, press the POWER
button.
3. Self-diagnosis Mode for Servicing/Display of DSP
Errors
3-1. Self-diagnosis Mode for Servicing
Before entering the test mode, DSP self-diagnosis program for ser-
vicing will be run.
vicing will be run.
• When an error is detected:
The error message is displayed on the fluorescent display tube.
When several errors occur at the same time, only the last error
detected will be displayed.
When several errors occur at the same time, only the last error
detected will be displayed.
• When no error is detected:
First, “DSP ERROR” will be displayed, then “DSP NO ERROR”
will be displayed, and the operation check mode will be set.
will be displayed, and the operation check mode will be set.
Table-1:
Error Message/Fluo-
rescent Display Tube
rescent Display Tube
Possible Reasons
DSP ERROR
When a DSP error is detected, after this dis-
play, the contents of “3-2. Display of DSP Op-
erations” will be displayed.
play, the contents of “3-2. Display of DSP Op-
erations” will be displayed.
Display of error
Possible cause
Mostly due to faulty connection (soldering) between
DSP and microprocessor
DSP and microprocessor
Faulty DSP clock (X3501 and onwards), faulty DSP
part, etc.
part, etc.
1 DSP BOOT
ERROR
2 DSP HREQ
ERROR
3 DSP VRFY
ERROR
1
2
2
1
2
2
Overrunning of DSP due to heat, microprocessor
bugging, or IC3409 (DIGITAL board PLL) is faulty
bugging, or IC3409 (DIGITAL board PLL) is faulty
4 DSP 1 RPLY
Faulty DSP part, or faulty microprocessor part, etc.
4. OPERATION CHECK MODE
Outputs the Lch LD/DVD OPTICAL signal to the FRONT Lch,
REAR Lch, CENTER, and the Rch to the FRONT Rch, REAR Rch,
and CENTER.
REAR Lch, CENTER, and the Rch to the FRONT Rch, REAR Rch,
and CENTER.
5. NOTE AFTER USING THE TEST MODE
Be sure to unplug the AC plug after the test mode is performed.
1
2
2
3-2. Display of DSP Operations
— 28 —
SECTION 5
ELECTRICAL ADJUSTMENT
TUNER SECTION
No adjustment is needed due to a tuner unit (TU401).
OSD SECTION
OSD WIDTH Adjustment
Note:
Perform “ALL CLEAR” before this adjustment.
(Refer to Servicing note on page 4)
(Refer to Servicing note on page 4)
Connection:
Procedure:
1. Press the POWER button and turn ON the power.
2. The OSD function frame will be displayed on the monitor. This
1. Press the POWER button and turn ON the power.
2. The OSD function frame will be displayed on the monitor. This
screen will disappear in a few seconds automatically when the
input of codes using the remote commander stops.
If it disappears during adjustments, move the cursor of the re-
mote commander supplied as an accessory. The screen will ap-
pear again.
input of codes using the remote commander stops.
If it disappears during adjustments, move the cursor of the re-
mote commander supplied as an accessory. The screen will ap-
pear again.
3. While watching the monitor screen, adjust CT201 of the OSD
(V) board so that the following adjustment standard is satisfied.
OSD COLOR BURST Adjustment
Connection:
Procedure:
1. Without anything connected to the external input terminal, press
1. Without anything connected to the external input terminal, press
the POWER button and turn ON the power.
2. Adjust CT202 of the OSD (V) board so that the reading on the
frequency counter becomes 3.579545 MHz
±
10 MHz.
OSD PICTURE Adjustment
Connection:
Connection 1:
MONITOR OUT
SET
Monitor
Adjustment standard:
Adjust so that the width B becomes one and a half times of width A.
Adjust so that the width B becomes one and a half times of width A.
1.5A = B
NOTE:
Extra margin is provided in this adjustment in consideration of the
deviation of the screen according to the type of monitor used.
Consequently, the user is able to adjust the position of the screen
freely. (For details, refer to “Adjustment of OSD Screen Position”
in 1. Servicing note. Refer to page 4.)
Extra margin is provided in this adjustment in consideration of the
deviation of the screen according to the type of monitor used.
Consequently, the user is able to adjust the position of the screen
freely. (For details, refer to “Adjustment of OSD Screen Position”
in 1. Servicing note. Refer to page 4.)
frequency counter
OSD (V) board
JW232
+
–
–
Monitor
Vectorscope
set
MONITOR OUT
Connection 2:
Monitor
Vectorscope
set
MONITOR OUT
VIDEO 1 IN
VTR etc.
Procedure 1:
1. Without anything connected to the external input terminal (con-
1. Without anything connected to the external input terminal (con-
nection 1), press the POWER button and turn ON the power.
2. Check that the OSD function frame screen is displayed on the
monitor. If no OSD function frame screen is displayed, move
the cursor button of the remote commander supplied as an ac-
cessory provided to display the screen.
the cursor button of the remote commander supplied as an ac-
cessory provided to display the screen.
3. Observe the vectorscope, and adjust RV201 of the OSD (V) board
so that the light dots converge in the BLUE area.
4. Connect a dynamic picture video device to the external input
terminal (VIDEO 1 IN jack) of this unit (Connection 2).
5. Press the VIDEO FUNCTION button and set the input source
to VIDEO 1.
6. Move the cursor of the remote commander supplied as an acces-
sory provided, and display the OSD function frame.
7. Observe the vectorscope. Check that the light dots in the BLUE
range and the light dots adjusted at 3 are coinciding.
8. If they do not coincide, disconnect the external video device,
and adjust RV201 of the OSD (V) board again.
9. If the light dots when an external video device is connected and
not connected coincide, it indicates the end of the adjustment.
monitor screen
FUNCTION
SOUND
SETUP
INPUT
SUB
USER
F ™
F +
F =
F P
F p
F )
F (
F 0
F1
A
B
OSD function frame
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