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• For some models, the mechanism and board assem-
blies are attached by connectors only. When carrying
out a diagnosis or repair of the boards in the "Service
position", make sure that the connectors are not dis-
connected.
Regulator board assembly
Display board assembly
Fig.2-2a
2.3
Jig RCU mode
This unit uses the following two modes for receiving remote con-
trol codes.
(1) User RCU mode:Ordinary mode for use by the user.
(2) Jig RCU mode: Mode for use in production and servicing.
When using the Jig RCU, it is required to set the VCR to the Jig
RCU mode (the mode in which codes from the Jig RCU can be
received). As both of the above two modes are stored in the EE-
PROM, it is required to set the VCR back to the User RCU mode
each time that an adjustment is made or to check that the neces-
sary operations have been completed.These modes can be set
by the operations described below.
Note:
• Confirm the RCU mode when exchanged parts. Since
some SERVICE PARTS sets the VCR to the Jig RCU
mode as initial setting. Therefore please set the VCR to
the user RCU mode after replacing the EEPROM.
User RCU mode
CH
Jig RCU mode
CH
Fig.2-3a User/Jig RCU mode
2.3.1 Setting the Jig RCU mode
(1) Turn on the power.
(2) Press the following remocon keys continuously within 2
seconds " SET UP MENU " → " 2 " → " 8 " → " OK ".
When the VCR is set to the Jig RCU mode, the symbols
( " : " ) in the time display of the FDP are turned off.
(Refer to Fig.2-3a)
1-8 (No.YD001)
Main board assembly
TP111 D.FF
TP4001 CTL.P
TP106 PB FM
TP2253 A.PB FM
Jack board assembly
( not displayed)
2.3.2 Setting the User RCU mode
(1) Turn off the power.
(2) Press the "REC" and "PAUSE" buttons of the VCR simul-
taneously. Alternatively, transmit the code "80" from the Jig
RCU.
2.4
Mechanism service mode
This model has a unique function to enter the mechanism into ev-
ery operation mode without loading of any cassette tape. This
function is called the "Mechanism service mode".
2.4.1 How to set the "Mechanism service mode"
(1) Set the VCR to the Jig RCU mode (the mode in which
codes from the Jig RCU can be received)
(2) Transmit the code "E5" from the Jig RCU.
(3) Release the lug of the Cassette holder and then slide the
Cassette holder toward the direction where the Cassette
holder is loaded by manually.
(4) The cassette holder lowers and, when the loading has
completed, the mechanism enters the desired mode.
When the VCR is set to the Mechanism service mode, the
symbols ("Timer") in the FDP (LED) are blinked.
2.4.2 How to exit from the "Mechanism service mode"
(1) Unplug the power cord plug from the power outlet.
2.5
As for distinction between two kinds of Main boards
Either of the two different kinds of Main boards is used for HR-
XVC30US, HR-XVC33US, HR-XVC33UC, and HR-XVC33UM,
according to a period of production.Since the two types of boards
have different circuits and parts numbers, check what type of
board is used for the product before your analysis and repair
work.The following is how to distinguish the Main board.
(1) Remove the Top cover. (See "SECTION 3 Removing the
major parts")
(2) Check whether "CN501" is printed in a space between the
Mechanism Assembly and the Rear cover. (See Figure 2-
5a.)
With CN501: LPB10207 type
Without CN501: LPB10221 type
With
CN501 : LPB10207 type
Without CN501 : LPB10221 type
Rear cover
CN501
CN2001
A/C HEAD
Mechanism assembly
Fig.2-5a
CN5001
CN7101
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