1. Memory function reprogramming. 
a. Check the power off.(Power is standby mode) 
b. Make for moment short-circuit test point(TP801), located at the front side on the main PWB. 
Be sure that all the display light up into the TEST mode. 
c. Using the CHANNEL(+) AND (—) buttons, select the right function numbers from JP0 to JP39, which appear in the 
display, referring to the E2PROM 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. 
? 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. 
d. Example : "ON" and "OFF" are taken as "1" and "0" respectively. 
The numbers JP0 to JP39 are divided into four groups and each groups setting is displayed in hexadecimal notation. 
JP27 JP26 JP25 JP24 
1 1 0 0 
v 
C 
JP23 JP22 JP21 JP20 
0 0 0 0 
v 
0 
JP19 JP18 JP17 JP16 
0 0 0 0 
v 
0 
JP15 JP14 JP13 JP12 
0 1 0 0 
v 
4 
JP11 JP10 JP9 JP8 
0 0 1 1 
v 
3 
JP7 JP6 JP5 JP4 
0 0 0 0 
v 
0 
JP3 JP2 JP1 JP0 
0 0 0 0 
v 
0 
Also recording level preset number selected from the ten keys on the remote control unit which appear in the 
LCD display, referring to the E2PROM map. 
JP39 JP38 JP37 JP36 
0 0 0 0 
v 
0 
JP35 JP34 JP33 JP32 
0 0 0 1 
v 
1 
JP31 JP30 JP29 JP28 
0 0 0 0 
v 
0 
SP n ? ? 
^ 
selection from the 
ten keys. 
(from "0" to "7") 
EP n ? ? 
^ 
selection from the 
ten keys. 
(from "0" to "7") 
Out lights 
blank 
SP p ? ? 
^ 
selection from the 
ten keys. 
(from "0" to "7") 
LP p ? ? 
^ 
selection from the 
ten keys. 
(from "0" to "7") 
2. Memory recording preset level reprogramming. 
a. Similarly to the above step 1-a and 1-b the same operate. 
b. Using the CHANNEL (+) AND (-) buttons, select the right function numbers continued from recording preset number 
as has been JP0~JP39, which appear in the LCD display, referring to the E2PROM map. 
3. Example : System p : PAL 
 n : NTSC v 
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(TP801), located at the front side on the main PWB to clear the 
TEST mode. 
^ ^ ^ ^ 
VC-MH705HM/LM 
VC-MH815HM/LM,MH85HM 
VC-MH715HM,MH835HM 
4. Jumper setting of JP0 to JP39 in hexadecimal notation and REC current setting. 
d. Example: 
c. The jumper setting in hexadecimal notation and REC current setting will be displayed on the 
television screen (upper left). 
a. Check the power on. (Power is ON) 
b. Make short circuit test point(TP801) and hold the point. 
Be sure that all the LCD display light up into the TEST mode. 
YC 44220707 
VM F8F9 
NOR-- 
If the jumper setting is set as step 1-d, it will be displayed on television screen 
like the example above. 
5. Finally release the test point to return to normal screen (E-E mode). 
YC 4 4 2 2 0 7 0 7 
V 
V 
V 
V 
SPLP SPEP 
PAL NTSC 
V VJP 003400C010 
55 
ROM MAP 
MODEL MH705HM MH715HM MH815HM MH835HM MH705LM MH815LM MH85HM 
PAL SP 46 46 46 46 46 46 46 
PAL LP 26 26 26 26 26 26 26 
SECAM SP 07 07 07 07 07 07 07 
SECAM LP 07 07 07 07 07 07 07 
IC701 iXA044WJ iXA044WJ iXA044WJ iXA049WJ iXA044WJ iXA045WJ iXA045WJ 
JP39 A.DUB 0 0 0 0 0 0 0 
JP38 NOT SLOW ATR 0 0 0 0 0 0 0 
JP37 S.SIMPLE PB 0 0 1 1 0 0 1 
JP36 NTPB 1 1 1 1 1 1 1 
JP35 NTSC SKEW 0 0 0 0 0 0 0 
JP34 HEAD 2 0 0 0 0 0 0 0 
JP33 HEAD 1 1 1 1 1 1 1 1 
JP32 HEAD 0 0 0 0 0 0 0 0 
JP31 GAMMA 0 0 0 0 0 0 0 
JP30 LOW PWR 5MIN 0 0 0 1 0 0 0 
JP29 POSI84 0 0 0 1 0 0 0 
JP28 R/C CODE 0 0 0 0 0 0 0 
JP27 DNR 0 0 0 0 0 0 0 
JP26 POST CODE 0 0 0 1 0 0 0 
JP25 SAT CTL 0 0 0 1 0 0 0 
JP24 AV LINK/16:9 0 0 0 1 0 0 0 
JP23 Hi-Fi 1 1 1 1 1 1 1 
JP22 SORT/CLOCK 0 0 0 1 0 0 0 
JP21 DECODER 1 1 1 1 1 1 1 
JP20 SURROUND 0 0 0 0 0 0 0 
JP19 IGR 0 0 0 0 0 0 0 
JP18 NICAM 1 1 1 1 1 1 1 
JP17 G-CODE1 0 1 1 1 0 1 1 
JP16 G-CODE0 0 1 1 1 0 1 1 
JP15 EP 1 1 1 1 1 1 1 
JP14 LP 0 0 0 0 0 0 0 
JP13 F-AV 1 1 1 1 1 1 1 
JP12 2 SCART 1 1 1 1 1 1 1 
JP11 RF OUTPUT OFF 0 0 0 0 0 0 0 
JP10 TUNER2 0 0 0 0 1 1 0 
JP9 TUNER1 1 1 1 1 0 0 1 
JP8 TUNER0 1 1 1 1 0 0 1 
JP7 SYSTEM1 0 0 0 0 0 0 0 
JP6 SYSREM0 0 0 0 0 0 0 0 
JP5 380FF/REW 1 1 1 1 1 1 1 
JP4 LOW POWER 0 0 0 0 0 0 0 
JP3 OEM 0 0 0 0 0 0 0 
JP2 VPS/PDC 0 0 0 1 0 0 0 
JP1 COLOUR1 0 0 0 0 0 0 0 
JP0 COLOUR0 0 0 0 0 0 0 0 
DISPLAY 023B4A0021 023B7A0021 023B7A0023 423B7E7623 024B4A0021 024B7A0023 023B7A0023 
0:LIGHT UP 1:FLASHING 
57 
VC-MH705HM/LM 
VC-MH815HM/LM,MH85HM 
VC-MH715HM,MH835HM 
56 
VC-MH705HM/LM 
VC-MH815HM/LM,MH85HM 
VC-MH715HM,MH835HM 
8. BLOCK DIAGRAM 
SYSTEM SERVO BLOCK DIAGRAM