JVC HRXVC1UJ/M
Manual de Servicio

WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE: No need setting for after INI 2D. INI 00 10 20 +0 0A AF 29 +1 30 97 02 +2 9A 95 00 +3 24 8A 71 +4 64 A0 66 +5 64 55 31 +6 4A 31 29 +7 86 04 04 +8 0B 88 00 +9 2F A5 00 +A 86 9F 00 +B 34 3A 05 +C 8A 00 A2 +D 08 10 B0 +E 0A BF 00 +F 0F 00 ---

Table 1 1. Connect the set to TV Monitor. 2. Turn on the POWER. 3. Press both CH UP button on the set and the FF button on the set for more than 2 seconds. ADDRESS and DATA will appear on TV Monitor as Fig 1. 4. ADDRESS is now selected and should �blink�. Using the SET + or - button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached. 5. Press ENTER to select DATA. When DATA is selected, it will �blink�. 6. Again, step through the DATA using SET + or - button until required DATA value has been selected. 7. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 8. Repeat steps 4 to 7 until all data has been checked. 9. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input. The unit will now have the correct DATA for the new MEMORY IC.

ADDRESS DATA

INIT 00 0A PLAY/REC 0010

Fig. 1

SERVO TIMING CHART
VCR MT PCB IC3001 (OEC0125A)

DPG 104 PIN

DFG 104 PIN 24 Cycle H. SW. P 105 PIN CH 1 CH 2

V-SYNC (E-E) 111 PIN

REC CTL (REC) 7 PIN V-SYNC (TRICK PB) 109 PIN

� WAVEFORM CHANGES DEPENDED ON THE TAPE SPEED

1-2