Sharp VC-M313 (serv.man9) Service Manual ▷ View online
46
REPLACEMENT OF IC705(E
2
PROM)
Servicing precautions
When the IC705(E
2
PROM) has been replaced, make the following reprogramming.
Depending on models, the IC705(E
2
PROM) has been factory adjusted for it’s memory function.
It’s therefor necessary to reprogram the memory function for the model in question.
Note that the servo circuit requires readjustments for the slow and still modes.
Note that the servo circuit requires readjustments for the slow and still modes.
1. Memory function reprogramming.
1. Check the power off.(Power is standby mode)
2. Make for moment short-circuit test point(P802), located at the front side on the main PWB.
2. Make for moment short-circuit test point(P802), located at the front side on the main PWB.
Be sure that all the fluorescent display tube light up into the TEST mode.
3. Using the CHANNEL(+) AND (–) buttons, select the right function numbers from JP0 to J39, which appear in the
fluorescent display tube, referring to the E
2
PROM map.
Press the DISPLAY button to pickup the functions(ON) and the CLEAR button to discard the functions(OFF).
DISPLAY and CLEAR buttons, are located on the remote control unit.
DISPLAY and CLEAR buttons, are located on the remote control unit.
∗ when the DISPLAY button has been pressed (ON), the memory function number starts flashing.
∗ when the CLEAR button has been pressed (OFF), the memory function number lights up.
4. Press the FF button on the remote control unit.
By doing, lower 7 of the 10 digits are displayed in hexadecimal notation.
5. Similarly to the above step 4, press the STOP button on the remote control unit.
By doing, upper 3 of the 10 digits are displayed in hexadecimal notation.
6. Example : "ON" and "OFF" are taken as "1" and "0" respectively.
The numbers JP0 to JP39 are divided into four groups and each group’s setting is displayed in hexadecimal notation.
1 When the press the FF button on the remote control unit.
1 When the press the FF button on the remote control unit.
By doing, lower 7 of the 10 digits are displayed in hexadecimal notation.
JP27 JP26 JP25 JP24
1
1
0
0
↓
C
JP23 JP22 JP21 JP20
0
0
0
0
↓
0
0
JP19 JP18 JP17 JP16
0
0
0
0
↓
0
0
JP15 JP14 JP13 JP12
0
1
0
0
↓
4
4
JP11 JP10 JP9 JP8
0
0
1
1
↓
3
3
JP7 JP6 JP5 JP4
0
0
0
0
↓
0
0
JP3 JP2 JP1 JP0
0
0
0
0
↓
0
0
2 When the press the STOP button on the remote control unit.
By doing, upper 3 in the 10 digits are displayed in hexadecimal notation from the feature function.
Also recording level preset number selected from the ten keys on the remote control unit which appear in the fluorescent
display tube, referring to the E
Also recording level preset number selected from the ten keys on the remote control unit which appear in the fluorescent
display tube, referring to the E
2
PROM map.
3 When the press the REW button on the remote control unit.
By doing, recording level preset number selected from the ten keys on the remote control unit which appear in the fluorescent
display tube, referring to the E
display tube, referring to the E
2
PROM map.
Out lights
blank
LP n
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
LP n
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
SP n
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
SP n
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
LP p
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
LP p
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
Out lights
blank
SP p
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
SP p
∗
∗
↑
selection from the
ten keys.
(from "0" to "7")
ten keys.
(from "0" to "7")
"0" fixed
displayed
JP39 JP38 JP37 JP36
0
0
0
0
↓
0
0
JP35 JP34 JP33 JP32
0
0
0
0
↓
1
1
JP31 JP30 JP29 JP28
0
0
0
0
↓
0
0
47
2. Memory recording preset level reprogramming.
1. Similarly to the above step 1-1 and 2 the same operate.
2. Using the CHANNEL (+) AND (-) buttons, select the right function numbers continued from recording preset number
2. Using the CHANNEL (+) AND (-) buttons, select the right function numbers continued from recording preset number
as has been JP0~J39, which appear in the fluorescent display tube, referring to the E
2
PROM map.
3. Press the STOP or REW button on the remote control unit.
By doing, recording level preset number selected by turn from the ten keys on the remote control unit, which appear
in the fluorescent display tube referring to the E
in the fluorescent display tube referring to the E
2
PROM map.
4. Example :
System
n : NTSC
↓
p : PAL
Tape speed
→
LP or EP
n
∗
∗
↑
↑
Chrominance preset number. (from "0" to "7")
Luminance preset number. (from "0" to "7")
3. Finally make for a moment short-circuit test point(P802), both located at the front side on the main PWB to clear the
TEST mode.
48
ROM MAP
MODEL
blank
blank
EP n * *
NTSC Luminance level
EP n * *
NTSC Chrominance level
SP n * *
NTSC Luminance level
SP n * *
NTSC Chrominance level
LP p * *
PAL Luminance level
LP p * *
PAL Chrominance level
blank
blank
SP p * *
PAL Luminance level
SP p * *
PAL Chrominance level
"0"
fixed
JP39
A.DUB
JP38
NOT SLOW ATR
JP37
SQ PB
JP36
NTSC PB
JP35
NTSC SKEW
JP34
HEAD2
JP33
HEAD1
JP32
HEAD0
JP31
GAMMA correction
JP30
L/P - 5 min
JP29
84 CHANNEL
JP28
R/C CODE 1
JP27
DNR
JP26
POST CODE
JP25
SAT CTL
JP24
AV LINK / 16 X 9
JP23
Hi-Fi
JP22
SORT/CLOCK
JP21
DECODER
JP20
SURROUND
JP19
IGR
JP18
NICAM
JP17
G-CODE1
JP16
G-CODE0
JP15
OEM
JP14
LP mode
JP13
F-AV
JP12
2 SCART
JP11
RF OUT
JP10
TUNER2
JP 9
TUNER1
JP 8
TUNER0
JP 7
SYSTEM1
JP 6
SYSTEM0
JP 5
SAT CH VPS OFF X380 FF/REW
JP 4
LOW POWER
JP 3
SPATIALIZER
JP 2
VPS/PDC
JP 1
COLOUR 1
JP 0
COLOUR 0
DISPLAY IN HEXADECIMAL
NOTATION
DISPLAY IN HEXADECIMAL
NOTATION
0:LIGHT UP
1:FLASHING
VC-M303HM
VC-M313HM
---
---
0
0
7
7
0
0
7
7
3
3
4
4
---
---
3
3
4
4
---
---
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
1
0
1
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
070734
34010
0004300
34010
0004300
070734
34010
0036300
34010
0036300
48
ROM MAP
MODEL
blank
blank
EP n * *
NTSC Luminance level
EP n * *
NTSC Chrominance level
SP n * *
NTSC Luminance level
SP n * *
NTSC Chrominance level
LP p * *
PAL Luminance level
LP p * *
PAL Chrominance level
blank
blank
SP p * *
PAL Luminance level
SP p * *
PAL Chrominance level
"0"
fixed
JP39
A.DUB
JP38
NOT SLOW ATR
JP37
SQ PB
JP36
NTSC PB
JP35
NTSC SKEW
JP34
HEAD2
JP33
HEAD1
JP32
HEAD0
JP31
GAMMA correction
JP30
L/P - 5 min
JP29
84 CHANNEL
JP28
R/C CODE 1
JP27
DNR
JP26
POST CODE
JP25
SAT CTL
JP24
AV LINK / 16 X 9
JP23
Hi-Fi
JP22
SORT/CLOCK
JP21
DECODER
JP20
SURROUND
JP19
IGR
JP18
NICAM
JP17
G-CODE1
JP16
G-CODE0
JP15
OEM
JP14
LP mode
JP13
F-AV
JP12
2 SCART
JP11
RF OUT
JP10
TUNER2
JP 9
TUNER1
JP 8
TUNER0
JP 7
SYSTEM1
JP 6
SYSTEM0
JP 5
SAT CH VPS OFF X380 FF/REW
JP 4
LOW POWER
JP 3
SPATIALIZER
JP 2
VPS/PDC
JP 1
COLOUR 1
JP 0
COLOUR 0
DISPLAY IN HEXADECIMAL
NOTATION
DISPLAY IN HEXADECIMAL
NOTATION
0:LIGHT UP
1:FLASHING
VC-M303HM
VC-M313HM
---
---
0
0
7
7
0
0
7
7
3
3
4
4
---
---
3
3
4
4
---
---
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
1
0
1
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
070734
34010
0004300
34010
0004300
070734
34010
0036300
34010
0036300
