Hitachi VT-M284A Owner's Manual page 48

Advanced Operations (Second VCR)
Press AVX on VCR1 - the LINE indicator will display.
Press REC on VCR1, and press PLAY on VCR2.
To monitor the picture as you record, VCR1 must be connected to your TV (follow
instructions in the other VCR's manual). Press the VCR/TV button on the remote. The
VCR indicator will light on VCR1's display and you can view the picture being recorded.