Mitsubishi HS-HD2000U, Service Manual

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1. Short-circuit the J483 and the GND of the DECK ASSY using the jig shown in Fig. 2.
2. Remove the DECK ASSY.
3. Connect TP5X and TP5Y with a jumper
Note1: Short-circuit the test points before turning on the power.
Note2: Short-circuit the Shield Case and the J483 using the jig shown in Fig. 2 before attaching the DECK ASSY.
SERVICE CAN BE EXECUTED WITH THE EE PICTURE DISPLAYED
DECK OPERATION CHECK
TP5T
TP5X
J483
PCB-MAIN (Component side)
Fig. 1
Check the DECK position and the operation of the Tape Running System, according to the following procedure.
1. Short-circuit TP5T and TP5Y shown in the Fig. 1.
2. Initialize the E
2
PROM.
3. Check the operation of the Tape Running System by pressing the FF button, REW button on the PCB-MAIN.
FF button : For forward rotation of the CAPSTAN MOTOR
REW button : For reverse rotation of the CAPSTAN MOTOR
4. Check the DECK position by pressing the CH-UP button, CH-DOWN button on the PCB-MAIN.
CH-UP button : DECK operation in the Loading direction
CH-DOWN button : DECK operation in the Unloading direction
Jig (Part No. : 859C548O10)
3W 330
Ω
Fig. 2