Sharp FV-DB2ES (serv.man3) Service Manual ▷ View online
FV-DB2E
2 – 1
Audio
FV-DB2E
Service Manual
FV-DB2E
Market
E
CHAPTER 2.
ADJUSTMENTS
[1] Tuner section
fL: Low-range frequency
fH: High-range frequency
• Check FM VT
Signal generator: 400 Hz, 225 kHz dev., FM modulated
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
• FM Detection
Signal generator: 10.7 MHz FM sweep generator
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
*1 Input: Antenna Output: Pin 23 of IC301
[2] How to check the version number of the
system microcomputer
system microcomputer
1. Turn the power off.
2. With holding down “PRESET SELECT” and “PRESET2” buttons,
turn the power on.
3. The version number displays as below.
Version number display
Frequency
Display
Check
Point
Instrument
Connection
87.5 MHz
87.5 MHz
1.5 V
± 1.0 V
TP-VT
108 MHz
108 MHz
5.0 V
± 1.0 V
TP-VT
Frequency
Display
Instrument
Connection
98.00 MHz
98.00 MHz
Input: Antenna
Output: Speaker Terminal
Output: Speaker Terminal
Test
Stage
Frequency
Frequency
Display
Instrument
Connection
FM IF
10.7 MHz
98.00 MHz
Input: Pin 36 of IC301
Output: Pin 23 of IC301
Output: Pin 23 of IC301
Test
Stage
Frequency
Frequency
Display
Setting/
Adjustment
Parts
Instrument
Connection
FM Band
Coverage
Coverage
—
87.50 MHz
(fL): L307
1.5
1.5
± 0.1 V
*1
FM RF
98.00 MHz
(10 ~ 20 dB)
(10 ~ 20 dB)
98.00 MHz
L304
*1
Figure 1 ADJUSTMENT POINTS
L304
R311
L307
TP-VT
FM RF
FM BAND
COVERANGE fL
COVERANGE fL
36
23
IC301
TUNER PWB
Ver. 08C
← Version number of the system microcom-
puter
SHP_SER_V1. 7. 2
← Version number of DAB module
FV-DB2E
2 – 2
[3] TEST MODE
1. TEST MODE 1
(Write in, operation manual, open to user)
(Write in, operation manual, open to user)
2. TEST MODE 2
Set TUNER PRESET MEMORY.
This test mode follows the normal POWER ON process.
1. Condition
2. PRESET LIST
Sensitivity appears (in numbers) in the lower line during DAB recep-
tion.
tion.
TEST MODE
CONTENTS
PROCEDURE
TEST 1
TUNER PRESET MEMORY CLEAR
1. PRESS THE 'PRESET SELECT' BUTTON
2. HOLD THE PRESET SELECT FOR 3 SECONDS MORE.
3. WHILEST “Preset clear” IS DISPLAYED, PRESS THE ENTER BUTTON.
2. HOLD THE PRESET SELECT FOR 3 SECONDS MORE.
3. WHILEST “Preset clear” IS DISPLAYED, PRESS THE ENTER BUTTON.
(open to
user)
user)
TEST 2
TUNER PRESET FOR PRODUCTION 1. POWER OFF
2. HOLD THE 'MENU' AND 'PRESET 2' BUTTON THEN POWER ON
TEST 3
KEY AND DISPLAY TEST
1. POWER OFF
2. HOLD THE 'MENU' AND 'PRESET 3' BUTTON THEN POWER ON
2. HOLD THE 'MENU' AND 'PRESET 3' BUTTON THEN POWER ON
TEST 4
TEST 5
TEST 6
TEST 5
TEST 6
ALL CLEAR (RESET)
PRODUCTION INITIALIZE
PRODUCTION INITIALIZE
1. POWER OFF
2. HOLD THE 'MENU' AND 'PRESET 4' BUTTON THEN POWER ON
2. HOLD THE 'MENU' AND 'PRESET 4' BUTTON THEN POWER ON
(open to
user)
user)
TEST 7
VERSION NUMBER DISPLAY
1. POWER OFF
2. HOLD THE 'MENU' AND 'PRESET 5' BUTTON THEN POWER ON
2. HOLD THE 'MENU' AND 'PRESET 5' BUTTON THEN POWER ON
(open to
user)
user)
TEST 8
MAIN LINE TEST
1. POWER OFF
2. HOLD THE 'MENU' AND 'PRESET 1' BUTTON THEN POWER ON
2. HOLD THE 'MENU' AND 'PRESET 1' BUTTON THEN POWER ON
Work:
Clear all TUNER PRESET MEMORY
Function: – BAND: DAB
Figure:
The above figure: Shown for about 2.0 sec
After Action: - Normal operation.
Preset Clear
TEST1
PRESS PRESET SELECT BUTTON
3 SECONDS MORE
TIMER A START
DISPLAY "Preset Clear"
Complete
CLEAR TUNER MEMORY .
DISPLAY "Complete" SHOWN FOR 2 SECONDS.
DISPLAY "Complete" SHOWN FOR 2 SECONDS.
TIMER A < 3 SECONDS
PRESS ENTER BUTTON
GO TO NORMAL MODE
NO
NO
YES
YES
Band:
DAB (The BAND key toggles between DAB, FM_ST, and
FM_MON.)
FM_MON.)
Volume:
Variable between 30, 20, 10, 1 and 0 (default: 20)
Bass:
Variable between -5 and +5 (with an increment of 1)
Treble:
Variable between -5 and +5 (with an increment of 1)
TUNING: Key operation is available for DAB/FM.
MUTING: A_MUTE and LINE OUT_MUTE are always OFF.
MUTING: A_MUTE and LINE OUT_MUTE are always OFF.
PRESET CH
BAND
FREQUENCY
1
→ B1
FM MONO
87.50 MHz
2
→ B2
108.00 MHz
3
→ B3
90.00 MHz
4
→ B4
106.00 MHz
5
→ B5
98.00 MHz
6
→ A1
DAB
174.928 MHz
7
→ A2
239.200 MHz
8
→ A3
218.640 MHz
9
→ A4
234.208 MHz
10
→ A5
206.352 MHz
11
→ C1
1452.960 MHz
12
→ C2
1471.792 MHz
13
→ C3
1490.624 MHz
14
→ C4
176.640 MHz
15
→ C5
237.488 MHz
FV-DB2E
2 – 3
3. TEST MODE 3 (FUNCTION: KEY AND DISPLAY)
FUNCTION: KEY AND DISPLAY
Press the following keys to turn off corresponding items on the LCD.
When all the keys are pressed, the LCD turns off.
TIMER LED is always on.
MUTE: ON
4. TEST MODE 4
Set the clock to 1:00, select DAB, and adjust the volume to STEP17.
Then perform timer playback by counting 1 minute as 1 second.
The display during timer playback is the same as that of normal timer
operation.
operation.
5. TEST MODE 5
Details have not yet been decided.
→ Go to TEST2.
6. TEST MODE 6
(Open to the user by manual explanation)
(Open to the user by manual explanation)
7. TEST MODE 7
Function: VERSION NUMBER DISPLAY
KEY
OFF
1
PRESET 1
“1” and THE FRAME
2
PRESET 2
“2” and THE FRAME
3
PRESET 3
“3” and THE FRAME
4
PRESET 4
“4” and THE FRAME
5
PRESET 5
“5” and THE FRAME
6
TUNE UP
“A” and THE FRAME
7
TUNE DOWN
“B” and THE FRAME
8
VOL UP
“C” and THE FRAME
9
VOL DOWN
“D” and THE FRAME
10
CLOCK
“S”
11
PRESET SELECT
“P”
12
ENTER
“DAB”
13
MENU
“FM”
14
BAND
“ST”
15
INFO
“
∞”
16
AUTO TUNE
LINE 1
17
SOUND
LINE 2
18
K-timer
“KITCHEN TIMER”
19
Time Shift
“TIME SHIFT”
TEST4
Set now time "1:00 01-01-2005" and enter into
standby mode
standby mode
Set K-timer 6min; Sleep 4min;
Alarm "1:02"/"tone"/"once"/"DA
Alarm "1:02"/"tone"/"once"/"DA
fucntion"
After 2 second, timer on.
After 2 second, sleep mark flash
INITIAL MODE
After 2 second, k-timer on and wait 4 second
enter into stand-by mode.
enter into stand-by mode.
Function: – Software RESET.
– All the function condition will be initialize.
"CLEAR_ALL" display
TEST6
GO TO POWER OFF MODE.
WHILST HOLDING DOWN THE PRESET
SELECT BUTTON, PRESS THE POWER
BUTTON.
SELECT BUTTON, PRESS THE POWER
BUTTON.
DISPLAY "Clear_All" FOR 1 SECOND.
ERASE ALL DATA STORED IN MEMORY AND
RESTORE VARIOUS SETTING TO THE INITIAL
STATUS (DEFAULT)
RESTORE VARIOUS SETTING TO THE INITIAL
STATUS (DEFAULT)
INITIAL MODE
Clear
㩷All
FV-DB2E
2 – 4
8. TEST MODE 8
Function:
1. Check communication from main micon to DAB unit when without DAB unit.
2. Check volume IC (75341) DAB channel conditon.
2. Check volume IC (75341) DAB channel conditon.
Note:
At test mode 8, there is not DAB unit.
3. Dimmer & supply condtion check
TEST8
GO TO POWER OFF MODE.
WHILST HOLDING DOWN THE "PRESET 1"
and "MENU" BUTTON, PRESS THE POWER
BUTTON.
and "MENU" BUTTON, PRESS THE POWER
BUTTON.
(chataring:10ms x 3)
1. DISPLAY "Communicat" FOR 1 SECOND
2. Set Volume IC (75341) to DAB channel
3. Set mute off but when volume change to 0 set
2. Set Volume IC (75341) to DAB channel
3. Set mute off but when volume change to 0 set
mute on
Push "preset select" key and change "SCP_CLK" &
"SI_DIN" & "SI_DOUT" as follows: (need display
statuse on LCD, first line display "CLK
statuse on LCD, first line display "CLK
DIN
DOUT", second line display Pin status.)
CLK
DIN DOUT
0
0
0
1
0
0
0
1
0
0
0
1
1
1
1 (At this conditon, BUZ (52pin) output
K-timer on singal)
Push "power" key to enter into stand-by
mode
Dimmer & supply condtion check
P_SUPPLY (45Pin) DIMMER_1 (53pin) DIMMER_2 (54pin)
P_SUPPLY (45Pin) DIMMER_1 (53pin) DIMMER_2 (54pin)
H
H
H
L
L
L
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