E8257D/67D, E8663D PSG Signal Generators Service Guide 263
Assembly Replacement
Front Panel
— W4 ALC INPUT) from the A10 ALC J4 (non–1EM signal generators
only).
— W5 (PULSE/TRIGGER GATE INPUT) from the A11 Pulse/Analog
Modulation Generator J201 (non–1EM signal generators only).
— W6 (PULSE VIDEO OUTPUT) from the A11 Pulse/Analog
Modulation Generator J203
(non–1EM signal generators only).
— W7 (PULSE SYNC OUTPUT) from the A11J202 (non–1EM signal
generators only).
— W49 (I IN) from the A35J7 (E8267D only).
— W50 (Q IN) from the A35J8 (E8267D non–1EM signal generators
only).
— W51 (DATA) from the A31J500 (E8267D non–1EM signal generators
only).
— W52 (DATA CLOCK) from the A31J501 (E8267D non–1EM signal
generators only).
— W53 (SYMBOL SYNC) from the A31J502 (E8267D non–1EM signal
generators only).
9. Disconnect the A1W1 display cable from the A31 Motherboard P13.
10.For serial number prefix < US/MY5XXX3XXX, disconnect the A4W1
inverter cable from the A31 Motherboard P12 (refer to Figure 3-3).
And for serial number prefix ≥ US/MY5XXX3XXX, disconnect the A2W1
display cable from the A31 Motherboard P12. (refer to Figure 3-4).
11.Disconnect the W9 ribbon cable from the A31 Motherboard P11.
12.Remove the front panel.
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